Is the 2021 Audi A6 ALLROAD reliable?

The 2021 Audi A6 ALLROAD has 12 complaints filed with NHTSA (0.9x the segment average). Our reliability verdict: above-average. Most common issue: ELECTRICAL problems.

What are common problems with the 2021 Audi A6 ALLROAD?

Top problems: ELECTRICAL (4 complaints, avg repair $500); DRIVER ASSIST/CAMERAS (2 complaints, avg repair $500); FUEL SYSTEM (2 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2021 Audi A6 ALLROAD?

Yes, there are 8 recall(s): SEAT BELTS:REAR/OTHER:RETRACTOR, TIRES, AIR BAGS, EQUIPMENT:ELECTRICAL:INFOTAINMENT:VIDEO (TOUCH)SCREEN/MONITOR/UNIT, ELECTRICAL SYSTEM, SERVICE BRAKES, HYDRAULIC:FLUID, ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL, 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 2021 Audi A6 ALLROAD?

The 2021 Audi A6 ALLROAD 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 2021 Audi A6 ALLROAD?

Estimated US average full-coverage insurance for the 2021 Audi A6 ALLROAD is approximately $1,570/year (wagon 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.

2021 Audi A6 ALLROAD

Problems, Recalls & Reliability Report

Above Average

Quick Summary

The 2021 Audi A6 ALLROAD has 12 owner complaints filed with NHTSA — that's 0.9x the segment average of 14. The most common issue is electrical problems (33% of all complaints), specifically: the car's fuel guage has been inaccurate since the initial purchase. it would always hang at around 50% and then drop to 5% within 10 miles. thankfully, we are aware and just check the miles driven so we do not get stranded. requested fix by dealership, they said there was nothing wrong. the recall . There are 8 recalls issued for this model year.

Total Complaints

Recalls Issued

5/5

Safety Stars

0.9x

vs Segment Avg

Known Problems(top 5 of 7)

ELECTRICAL

4 complaints

33%

• The car's fuel guage has been inaccurate since the initial purchase. It would always hang at around 50% and then drop to 5% within 10 miles. Thankfully, we are aware and just check the miles driven so we do not get stranded. Requested fix by dealership, they said there was nothing wrong. The recall
• Notice of electronic failure on dash, then car notified me to pull over safely due to the failure after 20 min of driving. Car stopped shifting gears and electronic power steering failed while the vehicle was moving. Difficult to maneuver the car to safety once the Safely Pull Over light came on. 2
• The Virtual Cockpit of the car (electronic screen right in front of the driver that displays speed, etc.) randomly turns off during driving, reboots, and displays an error message "Instrument Cluster Malfunction". A loud tone then chimes. This malfunction, while brief, is a safety issue due to the l

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

“The car's fuel guage has been inaccurate since the initial purchase. It would always hang at around 50% and then drop to 5% within 10 miles. Thankfully, we are aware and just check the miles driven so we do not get stranded. Requested fix by dealership, they said there was nothing wrong. The recall ”

— NHTSA complaint filing

Recalls (8)

SEAT BELTS:REAR/OTHER:RETRACTOR05/08/2021

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Volkswagen ID4, Audi A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A5 Sportback, A6 Allroad, A6 Sedan, A7, A8, E-Tron Quattro, E-Tron Sportback Quattro, Q3, Q5, Q5 Sportback, Q7, Q8, RS5 Sportback, RS5 Coupe, RS6 Avant, RS7, RSQ8, S4 Sedan, S5 Cabriolet, S5 Coupe, S5 Sportback, S6 Sedan, S7, S8, SQ5, SQ5 Sportback, SQ7, SQ8, and 2021-2022 S3 Sedan vehicles. The rear seat belt automatic locking retractors may deactivate early, which can prevent the child restraint system from securing properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."

Risk: An unsecured child restraint system can increase the risk of injury during a crash.

Fix: Dealers will inspect, and replace as necessary, the middle-rear seat belt assemblies, free of charge. Owner notification letters were mailed August 27, 2021. Owners may contact Volkswagen customer service at 1-800-893-5298 and Audi customer service at 1-800-253-2834. Volkswagen's numbers for this recall are 69CR (VW) and 69CS (Audi).

Fuel Cost Calculator for 2021 Audi A6 ALLROAD

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)

$2,401/yr

Highway driving (best-case MPG)

$1,847/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 2021 Audi A6 ALLROAD

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

$1,570

Full coverage / month

$131

Liability only / year

$571

vs US avg

-6%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (wagon)0.95x

× theft risk1.00x

× safety rating0.94x

× vehicle age1.05x

= Full coverage estimate$1570

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

Maintenance & Warranty

Recommended Audi A6 ALLROAD 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 2021 A6 ALLROAD, 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

DRIVER ASSIST/CAMERAS(~50K mi)

$500

FUEL SYSTEM(~50K mi)

$500

BODY/STRUCTURE(~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 12 owner complaints for this specific year, here's what to check or ask about:

☐
ELECTRICAL: The car's fuel guage has been inaccurate since the initial purchase. It would always hang at around 50% and then drop to 5% within 10 miles. Thankfully, we are aware and just check the miles driven so we do not get stranded. Requested fix by dealership, they said there was nothing wrong. The recall
Typically appears around 50K miles. Repair cost ~$500
☐
DRIVER ASSIST/CAMERAS: Today, I was in a protected left turn lane prior to making the turn. When oncoming traffic (4 lanes) cleared, I gently pressed the gas pedal to start the turn, but a red “pre-sense” error triggered and slammed on the brakes. I moved my foot to the brake and then back to the gas, and the error cleare
Typically appears around 50K miles. Repair cost ~$500
☐
FUEL SYSTEM: The car's fuel guage has been inaccurate since the initial purchase. It would always hang at around 50% and then drop to 5% within 10 miles. Thankfully, we are aware and just check the miles driven so we do not get stranded. Requested fix by dealership, they said there was nothing wrong. The recall
Typically appears around 50K miles. Repair cost ~$500
☐
BODY/STRUCTURE: DOORS MUST BE FORCEFULLY CLOSED IN ORDER TO FULLY LOCK. FREQUENTLY THE DOORS (ANY OF THE 4 ON THE CAR) DO NOT CLOSE UPON VEHICLE ENTRY. NO WARNING THAT THE DOOR IS NOT CLOSED IS PROVIDED BY THE VEHICLE. I HAVE DRIVEN MANY MILES WITH THIS UNSAFE CONDITION, ONLY TO DISCOVER THAT THE DOOR WAS NOT FULLY
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 8 recalls have been completed — free at any Audi dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)