The 2017 Challenger is built on Dodge's LX/LC platform with solid fundamentals, but the 5.7L and 6.4L Hemi engines have well-documented lifter/cam failures, and ZF 8-speed transmissions can develop cooler and solenoid issues. Hellcat models add supercharger and driveline stress concerns.
Hemi Camshaft and Lifter Failure (5.7L and 6.4L)
Common · high severityTypical onset: 60,000-120,000 mi
Symptoms: Cold-start tick or rattle that persists beyond 30 seconds, MDS (cylinder deactivation) misfires on cylinders 1 or 7, Check engine light with P0300-series misfire codes, Metal shavings in oil
Fix: Roller lifters collapse or camshaft lobes wear prematurely, often related to MDS oil pressure issues. Requires cam and lifter replacement, sometimes includes valve springs and pushrods. 12-16 labor hours depending on whether heads come off. Often find collateral damage to rockers.
Estimated cost: $3,500-6,000
ZF 8HP Transmission Oil Cooler Line Leaks
Common · medium severityTypical onset: 50,000-90,000 mi
Symptoms: ATF puddles under driver side of vehicle, Transmission fluid level drops, delayed engagement, Burnt transmission smell if driven low on fluid
Fix: Quick-connect fittings at the transmission cooler corrode or crack, especially in salt-belt states. Requires cooler line replacement and sometimes the external cooler itself. 2-4 labor hours including fluid refill and system flush if contaminated.
Estimated cost: $400-900
Transmission Control Module (TCM) Software Issues
Occasional · medium severitySymptoms: Hard 2-3 or 3-4 shifts, especially when cold, Limp mode with P0700 or U0073 codes, Delayed kickdown response, Erratic shift points
Fix: ZF 8-speed adaptive learning gets confused or TCM software bugs cause shift quality problems. Often resolved with TCM reflash (covered under powertrain warranty if under 5yr/60k), but some units need replacement. 1-2 labor hours for reflash, 3-4 if module replacement needed.
Estimated cost: $150-1,200
Hellcat Supercharger Pulley Bearing Failure
Occasional · high severityTypical onset: 40,000-80,000 mi
Symptoms: High-pitched whine or grinding from supercharger at idle, Belt squeal under boost, Sudden loss of power with check engine light, Metal debris in intercooler coolant
Fix: Supercharger input shaft bearing wears, potentially grenading the blower. Requires complete supercharger rebuild or replacement. 8-12 labor hours plus intercooler system flush. Track-driven cars or pulley mods accelerate failure.
Estimated cost: $4,500-8,000
Rear Differential Bushing Wear (All V8s)
Occasional · low severityTypical onset: 70,000-110,000 mi
Symptoms: Clunk on hard acceleration or deceleration, Vibration at highway speeds under load, Driveline shudder during 1-2 shift
Fix: Differential cradle bushings deteriorate from torque cycling, common on cars with aggressive driving. Requires subframe drop and bushing replacement, 4-6 labor hours. Upgraded polyurethane bushings available but transfer more NVH.
Estimated cost: $600-1,100
Water Pump Failure (3.6L Pentastar)
Occasional · medium severityTypical onset: 80,000-120,000 mi
Symptoms: Coolant weeping from timing cover area, Engine overheating at idle, Whirring or grinding noise from front of engine, Steam from hood in severe cases
Fix: Internal water pump driven by timing chain fails, leaking coolant into crankcase or externally. Requires timing cover removal, pump, and coolant flush. 5-7 labor hours. Check oil for milky contamination — if mixed, add oil change and possible bearing damage inspection.
Estimated cost: $800-1,400
Engine Wiring Harness Chafing (All Engines)
Rare · medium severitySymptoms: Intermittent no-start or stalling, Multiple random misfire codes, Traction control and ABS lights together, Gauges going haywire
Fix: Main engine harness rubs on sharp edges near firewall or valve covers, cutting through insulation. Related to recall NHTSA 18V-710. Requires harness inspection, repair, or replacement depending on damage. 3-8 labor hours depending on extent.
Estimated cost: $500-2,000
Solid muscle car platform if you budget for Hemi engine maintenance and transmission cooler attention — avoid high-mileage 5.7L/6.4L examples without cam/lifter service records, and Hellcats with unknown modification history.
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.