Audi , A6 , C4 , 2.5 TDI 5sp (1994-) Common Issues

Name: Audi, A6,C4,2.5 TDI 5sp
Brand: Audi
Rating: 6.4375 (4 reviews)

Overview Reviews Little Known Facts Common Issues Buyers Guide Famous People Youtube Reviews

Faulty oxygen sensor ($300-$500 repair)
Worn or loose timing belt tensioner ($200-$400 repair)
Cracked or worn engine mounts ($100-$300 per mount replacement)
Faulty or corroded fuel injectors ($200-$500 per injector replacement)
Leaking PCV (Positive Crankcase Ventilation) system hoses ($50-$150 repair)
Worn or damaged driveshaft or CV joints ($500-$1,000 repair)
Issues with the 5-speed manual transmission synchros or bearings ($300-$600 repair)
Faulty EGR (Exhaust Gas Recirculation) valve or components ($200-$400 repair)
Oil leaks from engine gasket seals or head bolts ($100-$300 per gasket replacement)
Problems with the air mass sensor ($150-$300 repair)
Fuel pressure regulator issues ($100-$250 repair)
Ignition coil pack failure ($500-$1,000 repair)
Worn or damaged brake rotors or calipers ($200-$600 repair)
Issues with the rear differential bearing or components ($300-$700 repair)
Faulty ABS (Anti-Lock Braking System) module or wheel speed sensors ($500-$1,200 repair)
Problems with the 2.5 TDI engine's turbocharger or wastegate system ($800-$1,500 repair)
Issues with the exhaust system or muffler ($300-$700 repair)
Worn or damaged window regulators ($100-$250 per regulator replacement)
Faulty sunroof components or roof sealant ($200-$400 repair)
Problems with the interior electrical systems (e.g., radio, lights) ($500-$1,000 repair)
Issues with the parking sensors or rearview camera system ($300-$600 repair)
Faulty fuel gauge sender unit ($100-$250 repair)
Worn or damaged clutch release bearing ($200-$400 repair)
Problems with the 2.5 TDI engine's variable geometry turbocharger (VGT) system ($1,000-$2,000 repair)
Issues with the engine's cylinder head or valve train components ($800-$1,500 repair)