Engine, major: Engine rebuild or replacement, cylinder head, head gasket, turbo or supercharger, timing chain or belt.
Engine, minor: Oil leaks, accessory belts, engine mounts, engine knock or ping.
Engine, cooling: Radiator, cooling fan, water pump, thermostat, antifreeze leaks, overheating.
Transmission (and clutch)-major: Transmission rebuild or replacement, torque converter, clutch replacement.
Transmission (and clutch)-minor: Gear selector and linkage, leaks, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission.
Drive system: Driveshaft or axle, CV joint, differential, transfer case, four-wheel-drive/all-wheel-drive components, driveline vibration, electrical failure, traction control, electronic stability control (ESC).
Fuel system/emissions: Check-engine light, sensors (O2 or oxygen sensor), emission-control devices (includes EGR), engine computer, fuel-injection system, fuel cap, fuel gauge/sender, fuel pump, fuel leaks, stalling or hesitation.
Engine electrical: Starter, alternator, hybrid battery and related system, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, distributor or rotor failure, spark plugs and wires failure.
Climate system: A/C compressor, blower (fan) motor, condenser, evaporator, heater system, automatic climate system, electrical failure, refrigerant leakage.
Suspension/steering: Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.
Brakes: Antilock system (ABS), parking brake, master cylinder, calipers, rotors, pulsation or vibration, squeaking, brake failure or wear.
Exhaust: Exhaust manifold, muffler, catalytic converter, pipes, leaks.
Paint/trim/rust: Paint (fading, chalking, peeling or cracking), loose interior and exterior trim or moldings, rust.
Body integrity: Squeaks, rattles, wind noises, loose or cracked seals and/or weather stripping, air and water leaks.
Body hardware (power or manual): Windows, locks and latches, doors or sliding doors, tailgate, trunk or hatch, mirrors, seat controls (movement and temperature), seat belts, sunroof, convertible top.
Power equipment and accessories: Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, alarm or security system, remote engine start.
Audio system (excluding aftermarket systems): radio, speakers, antenna, CD or DVD player; GPS, iPod & MP3 interface; communication system (e.g. ONSTAR, Bluetooth ), backup camera/sensors.
|Key for reliability ratings
From "better to worse"