chassis.monster
SE3PBuyer’s dossier

Mazda RX-8

What the official record says, what it costs to keep alive, and what they actually sell for — assembled from primary sources so you can walk into a viewing knowing more than the seller.

Median $11,500 across 23 stock-engine sales34 official recordsRegistry entry →

One test decides this car

A compression test is not a formality on a RENESIS — it is the purchase decision. Everything else on an RX-8 is cheap by comparison, and a seller who will not allow one before money changes hands has told you the answer.

Before any of this: everything below involves running and driving the car, so clear the Do Not Drive check above first. If the VIN comes back with an open airbag campaign, the car should not be road-tested at all until it is repaired — arrange the free repair, then inspect it.

Rotor-face compression

Warm engine, rotary-specific tester, all six faces, normalised to 250 rpm. A conventional piston-engine compression gauge cannot read a rotary correctly. Cranking speed changes the numbers, so a weak battery reads as a dying engine — normalise, or you will walk away from a healthy car (or buy a dead one).

  • 8.5 bar Factory standard

    What Mazda specifies new, at 250 rpm.

  • 7.5–7.9 bar Healthy

    Where most sound factory engines actually sit. This is the number to want.

  • 7.0–7.4 bar Running out of road

    Still driveable, but you are buying a rebuild on someone else's schedule. Price it in.

  • 6.9 bar Factory service limit

    The published minimum — a floor, not a pass mark. An engine at exactly 6.9 has reached the end of its specified life.

  • Below 6.9 bar Failing

    The community reads 6.5–6.9 as already failing. Below that, budget for a rebuild as part of the purchase price.

Faces must also sit within 1.5 bar of each other. Even-but-low is a tired engine; uneven is a hurt one, and uneven matters more than the average.

If the numbers come back bad, that is the whole negotiation: the cheapest installed rebuild starts around $4,200 and a typical one runs $6,000–$8,000. See the full cost breakdown ↓

These figures are the Mazda factory specification as quoted and normalised by the RX-8 community. We have not put a scan of the FSM page itself in front of you, so treat the attribution as second-hand even though the numbers are consistent across every owner resource we checked.

RX8Club — 13B-MSP compression figures, quoting the Mazda FSM ↗RX8Club — new and potential owners ↗

Hot restart

Drive it, shut it off, restart it immediately. A RENESIS that struggles hot is showing you its compression before the gauge does.

Ignition age

Coils and wires soften long before they fail outright, and tired ignition mimics low compression. Ask when they were last done — if the answer is vague, assume never and read the ignition costs below.

Oil consumption

These burn oil by design — the metering pump feeds it to the apex seals deliberately. An owner who says it uses none has either topped it up before you arrived or disabled the OMP, and the second is worse.

Service history over mileage

A 120k-mile car with receipts routinely outlives a 60k-mile car without them. Neglect kills RENESIS engines; miles alone do not.

The official record

Recalls, bulletins, investigations and programmes sourced to NHTSA, the manufacturer, or a court — sorted by what each should change about your purchase. This is a curated set, not the complete archive: NHTSA holds hundreds of manufacturer communications per model, and we kept the ones that change an inspection or a negotiation rather than the administrative paperwork. The severity calls and the “what you do about it” lines are our editorial read; the failure, consequence and remedy underneath come from the linked document. Every record here is from the USDM regulatory record — an import sold new in another market may carry campaigns that never appear in it. One caveat on the “verify by VIN” advice below: NHTSA’s lookup does not show a recall that was already repaired, and generally will not return a campaign more than 15 years old — so a clean result is not proof the older ones were ever done.

Dealbreaker (13)

Verify this is remedied before you drive it, take delivery, or hand over money.

21V744000NHTSA recall2009–2011

Fuel-pump mounting-ring cracking and leakage

What fails
Improper installation and, on certain RX-8s, heat exposure can crack the fuel-pump mounting rings and allow fuel leakage.
Consequence
A fuel leak in the presence of an ignition source increases fire risk.
Official remedy
Install new fuel-pump mounting rings and add a thermal-insulation pad to the RX-8 fuel tank free of charge.
What you do about it
Verify completion by VIN and do not drive a car with fuel odor, visible leakage, or an open campaign.
4,978 unitsJM1FE****90400031–JM1FE****90403405 · JM1FE****A0403406–JM1FE****A0404868 · JM1FE****B0404869–JM1FE****B0405726Primary source for 21V744000, Fuel-pump mounting-ring cracking and leakage
19V781000NHTSA recall2004

Takata passenger inflator previously replaced with same-design inflator

What fails
Passenger inflators previously replaced under an earlier recall with inflators of the same design can still rupture after propellant degradation.
Consequence
Sharp metal fragments can strike occupants and cause serious injury or death.
Official remedy
Replace the passenger inflator with a permanent alternate inflator free of charge.
What you do about it
NHTSA and Mazda say not to drive an affected vehicle with this recall open. Verify applicability by VIN and arrange free towing, mobile repair, or loaner support.
2,953 unitsJM1FE173940100069–JM1FE173240140879Primary source for 19V781000, Takata passenger inflator previously replaced with same-design inflator
19V488000NHTSA recall2010–2011

Takata passenger-airbag inflator rupture

What fails
The Takata passenger inflator can rupture during deployment after propellant degradation from long-term humidity and temperature cycling.
Consequence
Sharp metal fragments can strike occupants and cause serious injury or death.
Official remedy
Replace the passenger inflator with a permanent alternate inflator free of charge.
What you do about it
NHTSA and Mazda say not to drive an affected vehicle with this recall open. Verify applicability by VIN and arrange free towing, mobile repair, or loaner support.
No VIN range published — check by VIN, don’t assume it’s clearPrimary source for 19V488000, Takata passenger-airbag inflator rupture
18V402000NHTSA recall2004–2011

Takata passenger-airbag inflator rupture, permanent remedy transition

What fails
The Takata passenger inflator can rupture during deployment after propellant degradation from long-term humidity and temperature cycling.
Consequence
Sharp metal fragments can strike occupants and cause serious injury or death.
Official remedy
Replace the passenger inflator with a permanent alternate inflator free of charge.
What you do about it
NHTSA and Mazda say not to drive an affected vehicle with this recall open. Check the VIN because applicability is nonsequential and limited to vehicles transferred from the superseded campaign, then arrange free towing, mobile repair, or loaner support.
39,120 unitsJM1FE173640100059–JM1FE17NX40140890 · JM1FE173350140892–JM1FE173550161176 · JM1FE173960200014–JM1FE173660207468 · JM1FE173870207473–JM1FE173770214009 · JM1FE173580214012–JM1FE173380216616 · JM1FE17P190400036–JM1FE17P190403390 · JM1FE1CM2A0403432–JM1FE1C20A0404819 · JM1FE1S26B0404875–JM1FE1T27B0405726Primary source for 18V402000, Takata passenger-airbag inflator rupture, permanent remedy transition
18V403000NHTSA recall2009–2010

Takata passenger-airbag inflator rupture

What fails
The Takata passenger inflator can rupture during deployment after propellant degradation from long-term humidity and temperature cycling.
Consequence
Sharp metal fragments can strike occupants and cause serious injury or death.
Official remedy
Replace the passenger inflator with a permanent non-PSAN inflator free of charge.
What you do about it
NHTSA and Mazda say not to drive an affected vehicle with this recall open. Verify applicability by VIN and arrange free towing, mobile repair, or loaner support.
No VIN range published — check by VIN, don’t assume it’s clearPrimary source for 18V403000, Takata passenger-airbag inflator rupture
18V404000NHTSA recall2005–2009

Takata passenger-airbag inflator rupture

What fails
The Takata passenger inflator can rupture during deployment after propellant degradation from long-term humidity and temperature cycling.
Consequence
Metal fragments can strike occupants and cause serious injury or death.
Official remedy
Replace the passenger inflator with a permanent alternate inflator free of charge.
What you do about it
NHTSA and Mazda say not to drive an affected vehicle with this recall open. Verify applicability by VIN and arrange free towing, mobile repair, or loaner support.
No VIN range published — check by VIN, don’t assume it’s clearPrimary source for 18V404000, Takata passenger-airbag inflator rupture
17V474000NHTSA recall2004–2008

Takata driver-airbag inflator rupture

What fails
The Takata PSDI-4 driver inflator can rupture during deployment after propellant degradation.
Consequence
Sharp metal fragments can strike occupants and cause serious injury or death.
Official remedy
Replace the driver inflator with a permanent alternate-supplier, non-PSAN inflator free of charge.
What you do about it
NHTSA and Mazda say not to drive an affected vehicle with this recall open. Check the VIN and arrange Mazda's free towing, mobile repair, or loaner support rather than road-testing it.
JM1FE173640100059–JM1FE173340140891 · JM1FE173350140892–JM1FE173950161178 · JM1FE173960200014–JM1FE173660207471 · JM1FE173870207473–JM1FE173570214011 · JM1FE173580214012–JM1FE173980216619Primary source for 17V474000, Takata driver-airbag inflator rupture
17V354000NHTSA recall2004–2008

Fuel-pump discharge-pipe cracking

What fails
The resin fuel-pump discharge pipe can crack from fuel pressure and exhaust heat.
Consequence
A cracked pipe can leak fuel and cause a fire in the presence of an ignition source.
Official remedy
Install a modified fuel-filter body, sealing rings, and insulation pads. If campaign 0516J was already completed, only the filter-body portion may remain.
What you do about it
Verify completion by VIN and Mazda repair history and inspect for fuel odor or leakage before driving.
JM1FE****40100053–JM1FE****40140891 · JM1FE****50140892–JM1FE****50161178 · JM1FE****60200013–JM1FE****60207471 · JM1FE****70207473–JM1FE****70214011 · JM1FE****80214012–JM1FE****80216619Primary source for 17V354000, Fuel-pump discharge-pipe cracking
17V355000NHTSA recall2004

Improperly caulked lower-control-arm ball-joint sockets

What fails
An inappropriate caulking process can permit cracks in the lower-control-arm ball-joint sockets.
Consequence
A cracked socket can allow ball-joint separation and loss of steering.
Official remedy
Replace both front lower control arms.
What you do about it
Verify completion by VIN and do not road-test a car with an open campaign, cracking, looseness, or ball-joint noise.
35,332 unitsJM1FE173540100053–JM1FE173540138902Primary source for 17V355000, Improperly caulked lower-control-arm ball-joint sockets
16V793000NHTSA recall2004–2008

Fuel-pump sealing-ring heat deterioration

What fails
Fuel-pump sealing rings can deteriorate from engine and exhaust heat.
Consequence
Deteriorated rings may leak fuel and cause a fire in the presence of an ignition source.
Official remedy
Replace the sealing-ring set and add heat insulation at the fuel tank.
What you do about it
Check the VIN for both this campaign and 17V354000 because later Mazda campaign 1017E combined the remaining fuel-system work; do not drive a car with fuel odor or leakage.
JM1FE****40100053–JM1FE****40140891 · JM1FE****50140892–JM1FE****50161178 · JM1FE****60200013–JM1FE****60207471 · JM1FE****70207473–JM1FE****70214011 · JM1FE****80214012–JM1FE****80216619Primary source for 16V793000, Fuel-pump sealing-ring heat deterioration
05V325000NHTSA recall2004

Improperly forged lower-control-arm ball-joint socket

What fails
Improper forging of the lower control arm can allow cracks in the ball-joint socket.
Consequence
Under severe driving, the ball may separate from the socket and cause loss of steering.
Official remedy
Inspect the control arms and replace them where required.
What you do about it
Verify campaign completion and do not road-test a car with an open campaign, control-arm cracking, looseness, or ball-joint noise; confirm current parts and no-charge eligibility with Mazda.
27,800 unitsNo VIN range published — check by VIN, don’t assume it’s clearPrimary source for 05V325000, Improperly forged lower-control-arm ball-joint socket
05V317000NHTSA recall2004–2005

Stationary high-RPM heat damage and fuel-leak risk

What fails
Extended stationary operation at high engine speed can overheat and melt exhaust-adjacent sensors, switches, parking-brake parts, fuel-gauge components, or the fuel tank.
Consequence
Heat damage can cause fuel leakage and a fire in the presence of an ignition source.
Official remedy
Inspect the prescribed components and replace heat-damaged parts.
What you do about it
Verify campaign completion and inspect the fuel tank, heat shielding, wiring, sensors, parking-brake hardware, and surrounding components for historic heat damage; confirm current parts and no-charge eligibility with Mazda.
JM1FE17**40100053–JM1FE17**40140891 · JM1FE17**50140892–JM1FE17**50151508 · JM1FE17**50151929–JM1FE17**50158051Primary source for 05V317000, Stationary high-RPM heat damage and fuel-leak risk
04V074000NHTSA recall2004

Improperly wired front-passenger airbag

What fails
The front-passenger airbag was wired improperly.
Consequence
The passenger airbag may not provide adequate protection in a frontal crash.
Official remedy
Install a new wiring harness in the front-passenger airbag system.
What you do about it
Verify campaign completion by VIN and confirm passenger-airbag system readiness; for this older campaign, confirm current parts and no-charge eligibility with Mazda.
29,300 unitsJM1FE17**40100053–JM1FE17**40131583Primary source for 04V074000, Improperly wired front-passenger airbag

Negotiating point (16)

Diagnose and price it before you agree a number.

SSP82Special service program2004–2009

Clutch-pedal assembly warranty extension

What fails
The clutch-pedal bracket can crack, make abnormal noise, and eventually break, changing the clutch disengagement point or preventing gear shifts.
Consequence
A broken bracket can prevent normal clutch operation and shifting.
Official remedy
During the 96-month or 100,000-mile extension, inspect symptomatic cars and replace the complete clutch-pedal assembly free when bracket failure caused the clutch or shifting problem; qualifying prior repairs could be reimbursed.
What you do about it
The extension is expired. Inspect the bracket and welds, pedal position, noise, and clutch disengagement before purchase.
No VIN range published — check by VIN, don’t assume it’s clearPrimary source for SSP82, Clutch-pedal assembly warranty extension
SB-01-016-10Service bulletin2004–2010

Cracked engine mount causing hesitation or vibration

What fails
An engine mount can crack, producing manual-transmission hesitation after deceleration below 3,000 rpm in third gear or excessive automatic-transmission engine and body vibration at a stop in Drive.
What you do about it
Inspect both mounts and reproduce the relevant manual or automatic symptom before attributing vibration or hesitation to the rotary engine itself.
Primary source for SB-01-016-10, Cracked engine mount causing hesitation or vibration
02-005/08Service bulletin2004–2007

Front stabilizer-link plastic insert cracking

What fails
The plastic insert connecting the front stabilizer-link ball joint to the control link can crack and separate.
Consequence
A broken link can cause front suspension noise and reduce stabilizer-bar function.
What you do about it
Inspect both stabilizer links, boots, ball joints, and adjacent suspension hardware.
Primary source for 02-005/08, Front stabilizer-link plastic insert cracking
SSP77Special service program2004–2008

Rotary Engine Core Limited Warranty Extension

Official remedy
Extend coverage for the rotary engine core, housings and internal parts, and internal seals and gaskets to 96 months or 100,000 miles, whichever came first. Covered repairs used new or remanufactured Mazda parts without charge during the term; towing and qualifying prior-repair reimbursement were also provided under stated conditions.
What you do about it
The extension is expired for every covered car. Require engine-replacement records, maintenance history, and a normalized rotary compression test; no US-market MY2009–2011 engine-core extension was verified.
No VIN range published — check by VIN, don’t assume it’s clearPrimary source for SSP77, Rotary Engine Core Limited Warranty Extension
MSP16Special service program2004–2008

PCM reflash for lack of power

What fails
Affected vehicles may exhibit a lack of engine power.
Official remedy
Reflash the powertrain control module.
What you do about it
Confirm program history and diagnose any current lack of power rather than assuming software is the only cause.
JM1FE17**40100053–JM1FE17**80215462Primary source for MSP16, PCM reflash for lack of power
01-014/08Service bulletin2004–2008indexed only

Engine lacks power

What fails
The engine may exhibit a lack of power.
What you do about it
Require a full-load road test where safe and diagnose compression, ignition, catalyst, fuel delivery, and calibration if power is deficient.
Primary source for 01-014/08, Engine lacks power
01-016/07Service bulletin2004–2007indexed only

Ignition-coil inspection

Official remedy
Inspect the ignition coils under Mazda's published procedure; the NHTSA summary does not expose the criteria or subsequent repair steps.
What you do about it
Review coil, lead, and plug history and test the ignition system when misfire, difficult starting, or power loss is present.
Primary source for 01-016/07, Ignition-coil inspection
01-030/05Service bulletin2004–2005

False misfire codes after engine replacement

What fails
Stored eccentric-shaft position values can remain in the PCM after engine replacement and cause false P0300–P0302 misfire diagnosis.
What you do about it
On a replacement-engine car, reconcile the engine invoice, PCM setup, and current misfire data; do not assume every post-replacement misfire code is false.
Primary source for 01-030/05, False misfire codes after engine replacement
MSP04Special service program2004

PCM reflash for no-start, hard-start, lack of power, or specified DTCs

What fails
Affected cars may fail to start in cold ambient temperatures, be hard to start after short trips without full warm-up, lack power, or store DTC P2107, P2108, P2402, or P0420.
Official remedy
Reflash the powertrain control module.
What you do about it
Confirm campaign history and test cold and fully hot starts; a reflash record does not replace compression and ignition-system diagnosis for current symptoms.
No VIN range published — check by VIN, don’t assume it’s clearPrimary source for MSP04, PCM reflash for no-start, hard-start, lack of power, or specified DTCs
04V075000NHTSA recall2004

Cracked exhaust heat insulator

What fails
The exhaust heat insulator may crack and produce abnormal noise.
Consequence
Continued operation can allow the insulator to detach and create a road hazard for following vehicles.
Official remedy
Replace the heat insulator.
What you do about it
Verify campaign completion and inspect for a loose, cracked, or missing insulator; confirm current parts and no-charge eligibility with Mazda.
No VIN range published — check by VIN, don’t assume it’s clearPrimary source for 04V075000, Cracked exhaust heat insulator
MT-002-19Service bulletinindexed only

Intake debris after catastrophic engine failure

What fails
After catastrophic engine failure, debris retained in the intake system can enter and damage a replacement engine.
Consequence
An otherwise serviceable replacement engine can suffer secondary internal damage.
Official remedy
Clean the intake manifold and replace it if it cannot be cleaned to Mazda's standard.
What you do about it
For any replacement-engine car, require invoices showing intake inspection or cleaning and inspect for repeat damage or unexplained replacement-engine symptoms.
Primary source for MT-002-19, Intake debris after catastrophic engine failure

Worth knowing (5)

Context for the car's history rather than an action item.

SSPB3Warranty extension2004–2011

Takata replacement-inflator extended warranty

What fails
The warranty covers defects in material or workmanship of a permanent replacement inflator, not unrelated airbag-system faults or crash deployment.
Official remedy
Provide unlimited-mileage inflator warranty coverage after the permanent Takata recall repair for 2004–2008 driver and passenger inflators and 2009–2011 passenger inflators.
What you do about it
Mazda described coverage as lasting until at least 2026, but the exact present expiration date is not published in the cited bulletin; confirm eligibility by VIN with Mazda.
No VIN range published — check by VIN, don’t assume it’s clearPrimary source for SSPB3, Takata replacement-inflator extended warranty
Takata Economic Loss MDL 1:15-md-02599-FClass settlement2004–2011

Mazda Takata economic-loss class settlement

What fails
The settlement addressed economic-loss claims concerning vehicles equipped with specified Takata inflators; Mazda did not admit liability.
Official remedy
The settlement funded outreach, rental-car and out-of-pocket relief, customer support, and the replacement-inflator extended warranty, subject to the settlement's terms.
What you do about it
The Mazda claims deadline was 2022-08-02. The settlement does not replace the duty to complete every open Takata recall.
Primary source for Takata Economic Loss MDL 1:15-md-02599-F, Mazda Takata economic-loss class settlement
NHTSA-2010-0141; Notice 2Noncompliance petition2004–2009

Headlamp lenses missing manufacturer or importer marking

What fails
Certain headlamp lenses omitted a required manufacturer or importer identification marking under FMVSS No. 108.
Consequence
Mazda stated that the omission did not affect headlamp performance, and NHTSA granted Mazda's petition that the noncompliance was inconsequential to motor-vehicle safety.
What you do about it
No owner notification or remedy was required under the granted petition.
Primary source for NHTSA-2010-0141; Notice 2, Headlamp lenses missing manufacturer or importer marking
PE09-045NHTSA investigation2004–2006

Clutch-pedal bracket failures

What fails
NHTSA investigated clutch-pedal bracket failures. Mazda identified an improper body-fastener attachment sequence that could distort the bracket and lead to fatigue cracking.
Consequence
Progressive cracking can create noise and clutch disengagement difficulty and can ultimately prevent gear shifts.
Official remedy
Mazda implemented SSP82, extending clutch-pedal assembly coverage for a broader 2004–2009 population.
What you do about it
Inspect under the expired SSP82 criteria; do not treat the closed investigation as proof that an individual car is unaffected.
Primary source for PE09-045, Clutch-pedal bracket failures
Lamourine v. Mazda, C.A. No. 05C-08-236 Court buyback

Individual warranty-litigation repurchase

Consequence
The owners alleged that repeated problems substantially impaired the vehicle's use, value, and safety; the car had five repair visits and approximately 38 days out of service.
Official remedy
Mazda and the dealer repurchased the individual vehicle for $38,245.12 as part of the parties' resolution.
What you do about it
Treat this as evidence that one RX-8 was repurchased, not as a modelwide buyback program or present owner eligibility.
1 unitsPrimary source for Lamourine v. Mazda, C.A. No. 05C-08-236 , Individual warranty-litigation repurchase

What it costs to keep alive

Every figure below was read off a vendor page or a published shop estimate. Where a job can be quoted two ways — engine only, or engine plus getting it in and out of the car — both are shown, because that distinction is the single biggest source of budget shock on this chassis.

Ignition — the RX-8's standing tax

Coils and wires are wear items here, not failures. They soften long before they die, and a tired ignition reads exactly like low compression on a cold morning — which is why the community says refresh the ignition before you panic about the engine.

  • Coil set ×4, aftermarket part only

    Standard Motor Products UF-413 at ~$23.79 each is the budget end; branded NGK sets run toward the top of the band.

    $95–$200

    RockAuto / NGK dealers

  • Coil set ×4, genuine Mazda part only

    Mazda N3H1-18-100C. Atkins lists $116.99 each.

    $400–$470

    Racing Beat / Atkins Rotary

  • Plug wire set, OEM part only

    Complete set. Individual cords 3 and 4 superseded rather than being discontinued, so singles are still an option.

    $112

    Mazdatrix

  • Spark plugs ×4 part only

    Two leading (NGK RE7C-L) and two trailing (RE9B-T) — four plugs total, not eight.

    $90–$130

    Amayama / NGK

  • Coil replacement, done for you parts + labour

    Published shop estimate — this is the range, not an average.

    $350–$593

    RepairPal

The engine — where the real money is

The number that matters is whether it includes getting the engine out of the car and back in. A reman exchange engine and an installed rebuild are not comparable prices until you add R&R labour to the first one.

  • Reman exchange engine, used rotor housings part only

    Delivered in a crate: $3,499 + $500 refundable core + $500 shipping. You still have to fit it.

    $4,499

    Atkins Rotary

  • Reman exchange engine, new rotor housings part only

    Same engine, new housings instead of resurfaced. Installation still not included.

    $6,899

    Atkins Rotary

  • Rebuild your own core, installed installed

    The genuine floor for an installed job — and it reuses your housings.

    $4,200

    Rotary Resurrection

  • New rotor housings, pair part only

    The shop's own FAQ is blunt: any rebuild quoted at $4,500 or under does not include these, because the housings alone cost $2,000.

    $2,000–$2,100

    Rotary Resurrection

  • Rebuild, installed, established shop installed

    Defined Autoworks $7,500 (Series 1) / $8,000 (Series 2); REspeed $9,500 with vehicle drop-off, housings included if needed.

    $7,500–$9,500

    Defined Autoworks / REspeed

  • All-OEM seal, spring and bearing set part only

    Parts only. Atkins' master kits come in at $1,300–$1,500 by substituting their own apex seals for Mazda's.

    $2,000–$2,400

    Mazdatrix / Atkins Rotary

  • Ported turnkey engine part only

    A finished ported engine with no core required — Series 1 / Series 2.

    $9,500–$9,800

    Pettit Racing

Clutch

Cheap to do while the engine is already out, expensive as its own job. If a rebuild is coming, do them together.

  • Exedy OEM-spec kit part only

    Disc, pressure plate, throwout and pilot bearings, alignment tool.

    $390–$397

    Mazdatrix

  • Exedy Stage 1 kit part only

    $647.08 for 2004–08, $561.78 for 2009–11.

    $561–$647

    Racing Beat

  • Clutch replacement, done for you parts + labour

    Published estimate; labour alone is $439–$644. Published range, not an average.

    $1,419–$1,624

    RepairPal

Cooling

A rotary that overheats does not forgive it. This is the cheapest insurance on the car.

  • Radiator, aftermarket part only

    OEM manual-transmission radiator is $377 if you want genuine. Published range, not an average.

    $54–$90

    RockAuto

  • Water pump, OEM part only

    $152

    Mazda OEM Parts Online

  • Thermostat part only

    $46

    AutoZone

  • Water pump replacement, done for you parts + labour

    Published shop estimate — this is the range, not an average.

    $632–$763

    RepairPal

  • Coolant flush, done for you parts + labour

    Published shop estimate — this is the range, not an average.

    $362–$393

    RepairPal

Traps in the numbers

  • Cooling-fan motors are genuinely discontinued — the complete fan assembly superseded and is still stocked (~$620–$870), but you cannot buy just the motor from Mazda any more.
  • The rotors themselves were never discontinued, only superseded. Anyone quoting you "$200–$400 each" is quoting used parts: new genuine rotors are $1,100–$1,500 apiece.
  • A cheap rebuild is cheap because it reuses your rotor housings. That is a legitimate choice, not a scam — but it is a different product from a rebuild with new housings, and the price gap is about $2,100.

Prices verified 2026-07-31 from vendor pages and published shop estimates. They move — treat them as the shape of the bill, not a quote.

What they actually sell for

23 sold results with the original engine — hammer prices, not asking prices. Median $11,500, range $5,400–$33,250. 3 engine-swapped cars are charted separately below and left out of that median — a swapped car carries none of the risk this page is about.

Stock (23)Swapped (3)
$0$10k$20k$30k$40k20252026median $12,488Jul 2026 · $18,500 · 47k mi · stockJul 2026 · $8,988 · 32k mi · stockJul 2026 · $7,300 · 39k mi · stockJun 2026 · $17,000 · 30k mi · stockJun 2026 · $11,250 · 55k mi · engine swappedMay 2026 · $10,800 · stockMay 2026 · $5,800 · 113k mi · stockMar 2026 · $8,188 · 18k mi · stockMar 2026 · $32,250 · GM LFX V6 + MV5 6MTDec 2025 · $9,000 · 40k mi · stockDec 2025 · $19,150 · 39k mi · stockNov 2025 · $18,750 · 24k mi · stockNov 2025 · $8,700 · 53k mi · stockNov 2025 · $14,250 · stockOct 2025 · $33,250 · 10k mi · stockOct 2025 · $11,500 · 8k mi · stockAug 2025 · $10,000 · 3k mi · stockJul 2025 · $5,400 · 52k mi · stockJun 2025 · $13,750 · 31k mi · stockJun 2025 · $18,200 · 27k mi · stockApr 2025 · $13,700 · 26k mi · stockMar 2025 · $6,600 · stockFeb 2025 · $6,000 · 47k mi · stockJan 2025 · $13,475 · stockJan 2025 · $25,500 · 58k mi · LS3 V8 crateNov 2024 · $13,500 · stock
Every sale, charted and linked →

Things you’ll be told that aren’t true

Repeated often enough to sound like consensus. We checked, and they don’t hold up.

  • "Rotary tuition — $4k every 60–80k miles." Both halves mislead. $4k only buys the cheapest possible version of the job — your own core, resurfaced housings, about $4,200 installed — while typical all-in at a specialist runs $6,000–$8,000, as the cost table below shows. And the interval is wrong: consensus lifespan for an original engine is 80–100k miles, and a rebuild is a maintenance-dependent failure, not a scheduled service. The phrasing traces to a wheel retailer's marketing, not to owners.
  • "You must premix or you are starving the seals." Premix is a real practice and a defensible one, but it is contested rather than settled on RX8Club and r/RX8 — the car ships with an oil metering pump for this job. Track cars and OMP-delete cars are the clear-cut cases.

How this was built

Official records come from NHTSA, manufacturer service documents, and court filings — each row links to the document it came from. Where a record published no VIN range, we say so rather than implying every car is affected, and where only an index entry survives we label it. Sale prices are completed auction results, each linked to its listing. Nothing here is sourced from folklore, and where we could not verify something we left it out.

Severity ratings are our editorial judgement, not statements by NHTSA or the manufacturer, and none of this is legal or safety advice. Found something wrong? Tell the mechanic — corrections are the whole point.