The 2022 Supra is BMW's B58 (3.0L) or B48 (2.0L) engine in Toyota clothing, sharing the G29 Z4 platform. Most issues mirror BMW patterns: cooling system weak points, transmission fluid management critical, and the B58's infamous valve cover/oil separator problems.
Valve Cover PCV / Oil Separator Failure (3.0L)
Common · medium severityTypical onset: 40,000-70,000 mi
Symptoms: Oil consumption increases noticeably (1 qt per 1,000-1,500 mi), White smoke on cold starts, Rough idle or misfires due to oil fouling spark plugs, Check engine light for fuel trim / misfire codes
Fix: Replace integrated valve cover assembly with PCV system (BMW part 11127642891 or updated revision). Requires removing intake manifold, ignition coils. 4-5 hours labor. Must use BMW or OEM-equivalent parts; aftermarket failures common.
Estimated cost: $1,200-1,800
ZF8 Transmission Fluid Overheating / Degradation
Occasional · high severityTypical onset: 30,000-60,000 mi (hard driving) or 60,000+ mi (normal use)
Symptoms: Harsh 2-3 or 3-4 upshifts when warm, Delayed engagement from Park into Drive after heat cycles, Transmission enters limp mode on track days or spirited mountain runs, Burnt ATF smell
Fix: ZF8 has lifetime fill from factory but cannot handle repeated high-load heat. Drain/fill with ZF Lifeguard 8 fluid (8-9 qts), replace filter and pan gasket. Many add aftermarket trans cooler ($600-900 parts). Service: 2.5 hours; cooler adds 3-4 hours.
Estimated cost: $600-1,000 (fluid service); $1,800-2,800 (with aux cooler install)
Coolant System Leaks (Water Pump, Thermostat Housing)
Occasional · high severityTypical onset: 50,000-90,000 mi
Symptoms: Coolant level drops with no visible external puddles (weeps when hot, evaporates), Sweet smell from engine bay, Small puddle under car after overnight park, Overheating in traffic or under load if severe
Fix: B58 water pump uses plastic impeller that fails; thermostat housing o-rings leak. Water pump is buried behind timing cover — 6-8 hours labor. Thermostat housing: 2-3 hours. Always replace both if doing water pump (avoid second teardown).
Estimated cost: $1,800-2,800 (water pump); $500-800 (thermostat housing alone)
Fuel Injector Carbon Buildup / Failure (Direct Injection)
Occasional · medium severityTypical onset: 60,000-100,000 mi
Symptoms: Misfires on cold starts (P030X codes), Reduced power / hesitation under acceleration, Fuel smell in cabin or engine bay, Hard starting when engine is hot
Fix: B58 direct injection causes intake valve carbon buildup; injectors themselves can clog or leak. Walnut blasting intake valves: 4-5 hours. Individual injector replacement: 2 hours per injector. Full set replacement recommended if one fails (avoid repeat labor). Use BMW or Bosch injectors only.
Estimated cost: $800-1,200 (carbon cleaning); $1,400-2,200 (full injector set replacement)
Transmission Mount Failure
Common · low severityTypical onset: 40,000-80,000 mi
Symptoms: Clunk on 1-2 or 2-1 downshift, Vibration at idle in Drive, Excessive driveline lash when rolling onto throttle, Visible torn rubber on mount during inspection
Fix: Rear transmission mount (dogbone style) fails from torque cycling. Easy access from underneath. 1.5 hours labor. Upgraded polyurethane mounts available but increase NVH.
Estimated cost: $350-550
Electronic Starter Relay Intermittent Failure
Rare · high severitySymptoms: No crank, no start — dash lights normal, no clicking, Intermittent: works fine after sitting 20 minutes, May throw U0100 / U0121 CAN bus codes, Jump-starting or battery disconnect temporarily resolves
Fix: Covered by NHTSA recall (replace starter relay module in fuse box). Dealer-only repair under recall. If out of recall window: 1 hour labor, $200-400 for relay module. Verify recall completion before purchase.
Estimated cost: $0 (recall); $350-600 (if expired)
Solid platform if maintained like a BMW, not a Camry — budget $1,500/year for preventive cooling/trans work, verify recall completion, avoid high-mileage examples without full service records.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.