The 2015 Challenger is a solid retro muscle platform, but the 5.7L and 6.4L Hemi engines are notorious for lifter/cam failures after 60k miles, and the 8-speed ZF transmission can develop cooler and valve body issues. The Hellcat sees forced-induction stress on bottom-end components.
Hemi MDS Lifter and Camshaft Failure (5.7L & 6.4L)
Common · high severityTypical onset: 60,000-120,000 mi
Symptoms: Ticking or tapping noise on cold start that persists, Check engine light with misfire codes P0300-P0308, Loss of power, rough idle, Metal shavings in oil
Fix: The MDS (cylinder deactivation) lifters collapse or the cam lobes wipe out. Requires heads-off teardown, camshaft replacement, all 16 lifters, pushrods inspection, and often rocker arms. 16-20 labor hours at a competent shop. Some owners delete MDS with aftermarket cam to prevent recurrence.
Estimated cost: $4,000-7,000
8-Speed ZF Transmission Oil Cooler Leaks
Common · medium severityTypical onset: 50,000-90,000 mi
Symptoms: Transmission fluid pooling under vehicle, driver side, Burnt smell after highway driving, Harsh shifting or slipping when fluid is low
Fix: The cooler lines or the cooler itself develop leaks at crimp joints. External cooler replacement is straightforward, 2-3 hours labor, but you'll need fluid flush and often a new filter while you're in there. If ignored, low fluid destroys clutch packs.
Estimated cost: $600-1,200
Hellcat Bottom-End Bearing Failures (6.2L Supercharged)
Occasional · high severityTypical onset: 40,000-80,000 mi
Symptoms: Knocking or rattling from deep in engine, worse under load, Low oil pressure warning, Metal debris in oil filter during changes, Catastrophic failure: sudden loss of power, engine seizes
Fix: Rod bearings and sometimes mains wear prematurely, especially in cars driven hard or with modified tunes. Requires full engine-out teardown, crank polishing or replacement, all bearings, and piston inspection. 30-40 hours labor for short-block rebuild. Some owners go forged internals at this point.
Estimated cost: $8,000-15,000
TIPM (Totally Integrated Power Module) Failures
Occasional · high severitySymptoms: Intermittent no-start, no crank, Fuel pump not priming (no hum when key turned), Random electrical gremlins: windows, wipers, gauges acting erratically, Stalling while driving
Fix: The TIPM is Chrysler's Achilles heel—it's the fuse/relay box on steroids. When internal relays fail, the fuel pump circuit dies or the starter won't engage. Replacement is 2-3 hours labor, but the part runs $400-800. Programming required. Some independent shops offer TIPM repair services for half the cost.
Estimated cost: $800-1,400
Transmission Valve Body and Solenoid Issues (8HP70/90)
Occasional · medium severityTypical onset: 70,000-130,000 mi
Symptoms: Harsh or delayed 2-3 or 3-4 shifts, Transmission slipping or flaring between gears, Check engine light with solenoid or pressure control codes, Limp mode (stuck in 2nd or 3rd gear)
Fix: The ZF 8-speed develops valve body wear or solenoid pack failures. Requires pan drop, valve body removal, solenoid replacement or full valve body swap. 4-6 hours labor. Fluid and filter service is mandatory during repair. Early software updates help, but hardware eventually fails.
Estimated cost: $1,200-2,500
Pentastar V6 Oil Cooler and Head Gasket Seepage (3.6L)
Occasional · low severityTypical onset: 80,000-150,000 mi
Symptoms: Oil weeping from front of engine near timing cover, Coolant smell or slight loss with no visible external leak, Oil in coolant reservoir (milky appearance)
Fix: The 3.6L oil cooler housing gasket and cylinder head gaskets can seep over time. Oil cooler is 3-4 hours with timing cover removal; head gaskets require heads-off, 12-16 hours. Most seepage is slow and non-critical, but mixing fluids means head gasket replacement is urgent.
Estimated cost: $800-3,500
The V6 and non-Hellcat V8s are solid buys if the cam/lifter job has been done or you budget for it; avoid high-mileage Hellcats unless engine internals are documented as upgraded.
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.