2023 TOYOTA SUPRA

Typical onset: 40,000-80,000 mi

Symptoms: Metallic knocking at idle that worsens with RPM, Metal shavings in oil during changes, Sudden catastrophic engine failure with no warning, Low oil pressure warning at operating temperature

Fix: Complete engine teardown required. Rod bearings are undersized from factory on some builds. If caught early with oil analysis, bearing replacement runs 18-24 labor hours. If spun bearing damages crank, you're looking at short block replacement at 30-40 hours. Many shops won't warranty bearing jobs alone due to crank journal wear.

Estimated cost: $8,000-18,000

Symptoms: Harsh or delayed shifts after track use or spirited driving, Transmission entering limp mode on hot days during aggressive driving, Burnt transmission fluid smell, Fluid temps exceeding 240°F on OBD scanner

Fix: Factory trans cooler is undersized for performance use. Aftermarket auxiliary cooler installation is preventive fix, 3-4 hours. If already cooked the clutches, you're into full ZF rebuild territory at 16-20 hours plus $3,500-4,500 in parts. Fluid and filter service every 30k mi helps but doesn't solve root cause.

Estimated cost: $800-1,200 (cooler upgrade) / $6,000-9,000 (rebuild)

Typical onset: 30,000-70,000 mi

Symptoms: Long crank before starting, especially when hot, Misfires under high load or boost, P0087 code (fuel rail pressure too low), Sudden loss of power above 4,000 RPM

Fix: BMW-sourced HPFP on B58 has known cam follower wear issues. Pump replacement is 4-6 hours (intake manifold removal required). Critical: if pump grenades internally, metal debris contaminates entire fuel system requiring injector replacement and rail cleaning, pushing job to 12-15 hours total.

Estimated cost: $1,800-2,800 (pump only) / $4,500-6,500 (full system contamination)

Typical onset: 25,000-50,000 mi

Symptoms: Clunking when shifting from Park to Drive or Reverse, Excessive driveline lash during throttle tip-in, Vibration through chassis at idle, Visible separation or tearing of rubber mount

Fix: Hydraulic transmission mount tears prematurely, especially with aggressive launches. Replacement is straightforward at 1.5-2.5 hours but requires transmission support. Upgraded polyurethane mounts available but increase NVH. OEM replacement typically fails again by 60k mi.

Estimated cost: $400-700

Symptoms: Click but no crank condition, usually when engine is heat-soaked, Intermittent no-start that resolves after cooling, Works fine for weeks then fails randomly, Jump-starting doesn't help

Fix: BMW starter design has internal heat-related failure. Toyota issued recall for some VINs but not all affected units caught. Replacement is 2-3 hours due to awkward location under intake. Check if your VIN qualifies for free recall service first (campaign 23TA16). If out of recall, you're paying.

Estimated cost: $800-1,400 (if not covered by recall)

Typical onset: 50,000-90,000 mi

Symptoms: Coolant weeping from head/block junction, driver's side, Slow coolant loss with no visible external leaks, White residue around head gasket area, Slight misfire on cold start if coolant enters cylinder

Fix: Early B58 engines had head gasket sealing issues that BMW addressed with revised gasket design. If you have weeping, heads must come off. Job runs 14-18 hours, includes head resurfacing. Machine work adds $400-600. While apart, many shops recommend walnut blasting intake valves (these are direct injection) and inspecting valve stem seals.

Estimated cost: $4,500-6,800