2001 Audi A6 Quattro Service and Repair Manual

This manual for the 2001 Audi A6 Quattro is built around this exact model year and drivetrain combination, so the torque values, wiring references, and diagnostic steps line up with what Audi actually published for the 2.8L V6 (ATQ), 2.7L turbo V6 (APB), and 4.2L V8 (AWN) offered that year, rather than a generic A6 writeup.

Engines covered

• 2.8L V6 — DOHC, naturally aspirated, gasoline
• 2.7L V6 — DOHC, turbocharged, gasoline
• 4.2L V8 — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan
• 4-door wagon

Trims covered

• Base
• Avant
• Luxury

Known issues on the 2001 A6 Quattro. Seven recalls are on federal record for this model year. Two separate campaigns cover the fuel tank rollover valve, where aging plastic combined with stress from the aluminum ventilation line can crack the valve nipple and lead to a fuel leak near an ignition source. One covers the headlight switch connector, where certain pins can come into contact and short circuit, which could lead to overheating or fire. Another covers a knee bolster that can press into the headlight switch wiring harness and cause an electrical short, with the risk that a fire could originate in the left dashboard area. Another covers the fuel sending units, where sulfur deposits can make the fuel gauge read full when the tank is not, risking an unexpected run-out. A tire recall addresses vehicles with 2.7L engines where the calculated vehicle load exceeds the rated capacity for the fitted 225/45R17 tires. The final recall covers windshield wiper delay under heavy load on Allroad-configured vehicles, where the blades can become entangled and impair visibility. Owners have filed 113 complaints for the year.

Whether you're inspecting the fuel tank rollover valve, tracing the headlight switch harness, or servicing the fuel sending units, it keeps you on the OEM procedure and the correct specification for your specific 2001 A6 Quattro.