OBD diagnostics · purchase protection

2020 Audi A6
Common Problems & Inspection Guide

Verify baseline vehicle system stability data. Learn what to check on the physical vehicle computer before signing a bill of sale.

Connect Adapter & Check for Code Wipes

Platform Heritage

The Audi A6 is an executive car manufactured by the German company Audi since 1994. Now in its sixth generation, the successor to the Audi 100 is manufactured in Neckarsulm, Germany, and is available in saloon and estate configurations, the latter marketed by Audi as the Avant. Audi's internal numbering treats the A6 as a continuation of the Audi 100 lineage, with the initial A6 designated as a member of the C4-series, followed by the C5, C6, C7, C8 and the C9. The related Audi A7 is essentially a Sportback (liftback) version of the C7-series and C8-series A6 but is marketed under its own separate identity and model designation. All generations of the A6 have offered either front-wheel-drive or Torsen-based four-wheel-drive, marketed by Audi as their quattro system. The A6 has also been used as the basis for the company's Allroad models since 1999. The battery-electric model is sold as the A6 e-tron.

Source: Wikipedia intro extract · as of Jun 23, 2026

Key facts for this model year

24NHTSA owner complaints
9Safety recalls on file
10Top issue reports · Electrical System
$0Typical OEM recall remedy cost to you

0 average monthly buyer searches in the US (google ads data · as of Jun 23, 2026). Run a MotoMetrics scan for your VIN to see live repair exposure.

Verify the data — open primary sources · as of Jun 23, 2026

System Defect Summaries & Field Data

Active safety recalls on file: 9 (source: NHTSA Recalls API · as of Jun 23, 2026)

Top NHTSA complaint categories

Recent recall summaries

Campaign 22V034000 · TIRES · API record

Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabriolet, S6 Sedan, S7, S8, SQ5, 2021 Q5 Sportback, Q7, Q8, RS6 Avant, RS7, RSQ8, SQ5 Sportback, SQ7, and SQ8 vehicles. The rear axle alignment may not have been inspected after the repairs for Recall 21V-295 (42L1) were performed.

Campaign 21V159000 · AIR BAGS · API record

Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi RS6 Avant, RS7, 2020-2021 A6 Allroad, S6 Sedan, S7, 2019-2021 A6 Sedan, and A7 vehicles. The score line on the passenger air bag may not have been manufactured correctly.

Campaign 21V295000 · SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY · API record

Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6 sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 sedan, A4 Allroad, SQ5, S7, A6 sedan, S5 coupe, S4 sedan, S5 Cabriolet, A5 coupe, 2019-2021 RS5 coupe, A5 Sportback, S5 Sportback, RS5 Sportback vehicles. The lock nut on the trailing arm of the rear axle may break due to stress corrosion.

Campaign 20V153000 · ELECTRICAL SYSTEM:STARTER ASSEMBLY · API record

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2019-2020 Audi A6 vehicles equipped with mild-hybrid technology and 2.0TFSI engines. Moisture may enter the starter generator and cause an electrical short circuit.

Campaign 20V274000 · AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE · API record

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2020 Audi A6, A6 Allroad and A7 vehicles. The passenger air bag may not properly deploy through the instrument panel tear seam.

YouTube voice themes below are research hints only — verify against NHTSA data before citing.

On-Site Audi A6 Pre-Purchase Checklist

  1. Verify OBD-II readiness monitors are complete (not recently cleared) using a full protocol scan.
  2. Compare dashboard mileage to ECU-stored odometer modules where accessible.
  3. Pull permanent and pending DTCs — not only stored codes visible on the dash.
  4. Inspect systems related to ELECTRICAL SYSTEM (NHTSA complaint cluster — verify during test drive and PPI).
  5. Inspect systems related to FORWARD COLLISION AVOIDANCE (NHTSA complaint cluster — verify during test drive and PPI).
  6. Inspect systems related to STRUCTURE,UNKNOWN OR OTHER (NHTSA complaint cluster — verify during test drive and PPI).
  7. Inspect systems related to ELECTRICAL SYSTEM,SEATS (NHTSA complaint cluster — verify during test drive and PPI).
  8. Inspect systems related to ELECTRICAL SYSTEM,STRUCTURE (NHTSA complaint cluster — verify during test drive and PPI).
  9. Confirm recall remedy completed for TIRES (campaign 22V034000).
  10. Confirm recall remedy completed for AIR BAGS (campaign 21V159000).
  11. Confirm recall remedy completed for SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY (campaign 21V295000).
  12. Run a MotoMetrics on-site scan for Audi A6 before signing the bill of sale.

Alternative Inferences & Cross-Shopping Matrix

Adjacent model years for this nameplate and equivalent footprints shoppers compare across brands.

Generational cohorts

2019 Audi A6 2018 Audi A6 2017 Audi A6 2016 Audi A6

Class competitors

2020 Audi A4 2021 Audi A4 2021 Bmw 5 Series 2019 Audi A4 2019 Bmw 3 Series 2019 Bmw 5 Series 2022 Audi A4 2018 Audi A4

Vehicle health varies wildly by individual history. Aggregate recall and complaint data cannot tell you whether the specific car on the lot had its monitors cleared or its odometer rolled back. Verify the physical or digital scan before you sign a bill of sale.

Launch Diagnostic Scanner
Initialize On-Site Scan