Is the 2020 Audi S6 reliable?

The 2020 Audi S6 has 5 complaints filed with NHTSA (0.6x the segment average). Our reliability verdict: excellent. Most common issue: ELECTRICAL problems.

What are common problems with the 2020 Audi S6?

Top problems: ELECTRICAL (2 complaints, avg repair $500); OTHER (1 complaints, avg repair $500); ENGINE (1 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2020 Audi S6?

Yes, there are 6 recall(s): TIRES, AIR BAGS, SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY, ELECTRICAL SYSTEM:INSTRUMENT PANEL:FUEL GAUGE:FUEL LEVEL FLOAT/SENSOR/SENDING UNIT, ELECTRICAL SYSTEM, BACK OVER PREVENTION: SENSING SYSTEM: CAMERA. Contact any Audi dealer to verify if recalls have been completed on your specific vehicle.

How much does it cost to fuel a 2020 Audi S6?

The 2020 Audi S6 gets 22 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2182. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2020 Audi S6?

Estimated US average full-coverage insurance for the 2020 Audi S6 is approximately $2,143/year (sedan-luxury class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2020 Audi S6

Problems, Recalls & Reliability Report

Excellent Reliability

Quick Summary

The 2020 Audi S6 has 5 owner complaints filed with NHTSA — that's 0.6x the segment average of 8. The most common issue is electrical problems (40% of all complaints), specifically: my 2020 audi s6 has been undriveable since september 27, 2024 due to a backordered recall part (gateway control module). audi has failed to provide a repair timeframe, making my car unusable for over five months. audi has refused to provide a loaner vehicle despite the long delay. as of march 2025, . There are 6 recalls issued for this model year.

Total Complaints

Recalls Issued

—/5

Safety Stars

0.6x

vs Segment Avg

Known Problems(top 4 of 4)

ELECTRICAL

2 complaints

40%

• My 2020 Audi S6 has been undriveable since September 27, 2024 due to a backordered recall part (Gateway Control Module). Audi has failed to provide a repair timeframe, making my car unusable for over five months. Audi has refused to provide a loaner vehicle despite the long delay. As of March 2025,
• While driving my 2020 Audi S6, the vehicle suddenly lost power and completely shut off in the middle of the road without warning. There were no warning lights or messages beforehand. I was unable to accelerate or steer out of the way, which created a major crash risk for myself and other drivers. I

Typical onset: 50K miles Est. repair: $500

“My 2020 Audi S6 has been undriveable since September 27, 2024 due to a backordered recall part (Gateway Control Module). Audi has failed to provide a repair timeframe, making my car unusable for over five months. Audi has refused to provide a loaner vehicle despite the long delay. As of March 2025, ”

— NHTSA complaint filing

Recalls (6)

TIRES26/01/2022

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.

Risk: Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.

Fix: Dealers will inspect the rear axle, adjust the alignment as necessary, and replace any prematurely or unevenly worn tires, free of charge. Owner notification letters were mailed March 3, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L5.

Fuel Cost Calculator for 2020 Audi S6

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,182

Per month

$182

Per mile

18.2¢

MPG

City driving (worst-case MPG)

$2,667/yr

Highway driving (best-case MPG)

$1,715/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2020 Audi S6

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$2,143

Full coverage / month

$179

Liability only / year

$710

vs US avg

+28%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (sedan-luxury)1.28x

× theft risk1.00x

× safety rating1.00x

× vehicle age1.00x

= Full coverage estimate$2143

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Audi S6 Service Intervals

Oil change

10K mi / 12 mo

Tire rotation

10K mi

Brake fluid

24 months

Transmission fluid

40K mi

Engine coolant

100K mi

Spark plugs

60K mi

Cabin air filter

20K mi

Engine air filter

40K mi

Differential (AWD/4WD)

40K mi

Long-interval service (LongLife) uses fully-synthetic oil. Some engines have timing belts (check owner's manual).

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Audi New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

4 yr / 50K mi

Powertrain

4 yr / 50K mi

Hybrid/EV battery

8 yr / 100K mi

Corrosion (rust perforation)

12 yr / unlimited mi

Roadside assistance

4 yr / unlimited mi

Corrosion coverage is unlimited miles for 12 years

These are the terms for a new Audi. If you're buying a used 2020 S6, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Audi dealer for VIN-specific remaining warranty.

Estimated Repair Costs

ELECTRICAL(~50K mi)

$500

OTHER(~50K mi)

$500

ENGINE(~50K mi)

$500

TRANSMISSION(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 5 owner complaints for this specific year, here's what to check or ask about:

☐
ELECTRICAL: My 2020 Audi S6 has been undriveable since September 27, 2024 due to a backordered recall part (Gateway Control Module). Audi has failed to provide a repair timeframe, making my car unusable for over five months. Audi has refused to provide a loaner vehicle despite the long delay. As of March 2025,
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: My 2020 Audi S6 has been undriveable since September 27, 2024 due to a backordered recall part (Gateway Control Module). Audi has failed to provide a repair timeframe, making my car unusable for over five months. Audi has refused to provide a loaner vehicle despite the long delay. As of March 2025,
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: While driving my 2020 Audi S6, the vehicle suddenly lost power and completely shut off in the middle of the road without warning. There were no warning lights or messages beforehand. I was unable to accelerate or steer out of the way, which created a major crash risk for myself and other drivers. I
Typically appears around 50K miles. Repair cost ~$500
☐
TRANSMISSION: While driving my 2020 Audi S6, the vehicle suddenly lost power and completely shut off in the middle of the road without warning. There were no warning lights or messages beforehand. I was unable to accelerate or steer out of the way, which created a major crash risk for myself and other drivers. I
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 6 recalls have been completed — free at any Audi dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)