DecodedCars2021 Audi Q8
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2021 models.
- Class
- Standard Sport Utility Vehicle 4WD
- Body styles
- 4dr SUV
- Engines
- 3.0L 6-cyl turbo
- Horsepower
- 335 hp
- Transmission
- 8-speed automatic
- Drivetrain
- All-Wheel Drive
- Seats
- 5
- Fuel
- Hybrid
- MPG (best)
- 20 combined · 18 city / 23 hwy
- Length
- 196.5 in
- Curb weight
- 4,729 lb
- NHTSA rating
- ★★★★★
- Recalls
- 7 campaigns
Pros & cons
What's good
- Hybrid version availableOffered as a hybrid as well as gas.
- 5-star NHTSA safety ratingTop overall score in federal crash tests.
Watch out for
- Premium fuel requiredEvery gasoline version is rated for premium, which raises running costs.
Calculated from EPA, NHTSA and vPIC data against 27 similar 2021 models — not a review. How we calculate this →
Overview
The 2021 Audi Q8 is a standard SUV offered with a 3.0L 6-cyl turbo engine, including a hybrid version and all-wheel drive.
It measures about 197 inches long and 79 inches wide on a 118-inch wheelbase, with a curb weight of roughly 4,729 lb.
EPA rates its most efficient version at 20 MPG combined (18 city / 23 highway), 6% better than the 2021 standard SUV average of 18.8 MPG, for an estimated $4,100 a year in fuel.
In NHTSA crash testing it earned the top 5-star overall rating.
It has 7 recall campaigns on file and owners have filed 30 complaints with NHTSA since 2015, most often about the electrical system.
What changed for 2021
- Best combined MPG up from 18 to 20
Compared with 2020; trim, feature and price changes aren't covered. See the 2020 Q8 →
Trims, performance & features
Engine335 hp3.0L 6-cyl
Transmission8-speed automatic
DriveAWD/4WD
Seating5 seats · 2 rows
Trims
S Line quattro Premium Plusquattro PremiumS Line quattro Prestige
Safety & driver-assist features
Automatic emergency brakingStandard
Forward collision warningStandard
Blind-spot monitoringStandard
Rear cross-traffic alertStandard
Lane departure warningStandard
Backup cameraStandard
Automatic high beamsStandard
Keyless startStandard
LED headlightsYes
Built in: Bratislava, Slovakia
NHTSA vPIC, as reported by the manufacturer for 5 2021 Q8 configurations; may not list every trim. How we calculate this →
Dimensions & weight
| Body | Length | Width | Height | Wheelbase | Track F / R | Curb weight | Weight F/R |
|---|---|---|---|---|---|---|---|
| 4dr SUV | 196.5 in | 78.7 in | 67.3 in | 118.1 in | 66.1 / 66.5 in | 4,729 lb | 55/45 |
Transport Canada CVS (Open Government Licence – Canada), Canadian-market figures.
Will it fit your garage? Check with your measurements →Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| Q8 Hybrid | 3.0L 6-cyl turbo | Automatic (S8) | All-Wheel Drive | 18 / 23 / 20 | +6% | $4,100 | 453 |
4/10EPA fuel economy score (best version)
4/10EPA greenhouse gas score
Spend $8,500Fuel over 5 years vs. average new car
18.8 MPG2021 Standard Sport Utility Vehicle 4WD average
EPA estimates; "vs. class" is combined MPG against the 2021 EPA class average. How we calculate this →
Safety ratings & technology
| Version | Overall | Frontal | Driver / passenger | Side | Side pole | Rollover | Rollover risk |
|---|---|---|---|---|---|---|---|
| 2021 Audi Q8 SUV AWD | ★★★★★ | ★★★★★ | 4★ / 5★ | ★★★★★ | ★★★★★ | ★★★★★ | 15.8% |
StandardElectronic stability control
StandardForward collision warning
StandardLane departure warning
Similar 2021 standard SUVs
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2021 Audi Q8 (this car) | 20 MPG | ★★★★★ | 7 |
| 2021 Tesla Model Y | 326 mi | Not rated | 23 |
| 2021 Porsche Cayenne | 21 MPG | Not rated | 7 |
| 2021 BMW X5 | 23 MPG | ★★★★★ | 12 |
| 2021 Land Rover Defender | 19 MPG | Not rated | 9 |
| 2021 Lexus RX | 30 MPG | Not rated | 2 |
| 2021 Volvo XC90 | 27 MPG | Not rated | 7 |
Recalls (7)
Back Over Prevention › Sensing System › Camera · Dec 19, 2025
NHTSA campaign 25V900000 · 356,894 vehicles
- Problem
- Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2026 vehicles. Please see the recall report for a complete list of models. A software error may prevent the rearview camera image from displaying as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
- Risk
- A rearview image that does not display reduces the driver's view behind the vehicle, increasing the risk of a crash.
- Fix
- Dealers will update the software, free of charge. Owner notification letters were mailed January 14, 2026. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90TV. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on December 23, 2025.
Electrical System › Software · Mar 31, 2025
NHTSA campaign 25V201000 · 44,387 vehicles
- Problem
- Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 SQ8, A6 SEDAN, A7, A8, Q7, Q8, RS6 Avant, RS7, RSQ8, S6 SEDAN, S7, S8, A6 Allroad, and SQ7 vehicles. Due to a software error, the instrument panel display may fail.
- Risk
- An instrument panel display that fails to show critical safety information, such as the speedometer or warning lights, increases the risk of a crash.
- Fix
- Dealers will update the instrument panel module software, free of charge. Owner notification letters were mailed April 24, 2025. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90VC.
Back Over Prevention › Display Function · Oct 5, 2022
NHTSA campaign 22V742000 · 170,296 vehicles
- Problem
- Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Audi A8, RS7, RS6 Avant, RS5 Sportback, RS5 Coupe, Q8, Q7, Q5 Sportback, S4 Sedan, Q5, A7, A6, A6 Allroad, A5 Sportback, A5 Coupe, A5 Cabrioleet, A4 Sedan, A4 Allroad, E-Tron Sportback Quattro, SQ7, S5 Cabriolet, E-Tron Quattro, SQ8, SQ5 Sportback, SQ5, S8, S7, S6 Sedan, S5 Sportback, S5 Coupe, 2022 E-Tron GT, and 2021-2022 RSQ8 vehicles. Due to a software issue, a blank or black screen may be displayed instead of the rearview camera image when the vehicle is placed in reverse gear. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
- Risk
- A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash.
- Fix
- Dealers will update the infotainment unit software, free of charge. Owner notification letters were mailed October 25, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen's number for this recall is 91DZ.
Fuel System, Gasoline › Delivery › Fuel Pump · Jul 20, 2022
NHTSA campaign 22V516000 · 49,443 vehicles
- Problem
- Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2019-2021 Audi Q8, and 2020-2021 Audi Q7 vehicles. A component inside the fuel pump may break, causing the fuel pump to fail.
- Risk
- Fuel pump failure can cause an engine stall, increasing the risk of a crash.
- Fix
- Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed December 22, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Audi's number for this recall is 20DR.
Tires · Jan 26, 2022
NHTSA campaign 22V034000 · 31,058 vehicles
- Problem
- 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.
Seat Belts › Rear/Other › Retractor · Aug 5, 2021
NHTSA campaign 21V606000 · 45,496 vehicles
- Problem
- 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).
Suspension › Rear › Axle › Non-Powered Axle Assembly · Apr 26, 2021
NHTSA campaign 21V295000 · 40,993 vehicles
- Problem
- 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.
- Risk
- A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.
- Fix
- Dealers will replace the lock nuts and, if necessary, the associated bolts, free of charge. Owner notification letters were mailed June 4, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L1.
Not every 2021 Audi Q8 is affected — only a VIN check confirms your car.
Owner-reported problems
30Complaints to NHTSA since 2015
0Involved a crash
0Involved a fire
0Injuries reported
8,600 miTypical mileage at failure
Unverified owner reports; best-sellers collect more.
Used 2021 Audi Q8 buyer's checklist
- Run the VIN at nhtsa.gov/recalls. 7 recalls this year — ask for proof of repairs.
- Electrical System — 13 owner reports. Test every window, lock, light, screen and USB port; check the battery age.
- Engine — 6 owner reports. Cold-start the engine, listen for knocking, and watch for warning lights or hesitation on acceleration.
- Fuel System, Gasoline — 4 owner reports. Smell for fuel around the car and in the cabin, check that it starts easily when warm, and look at the oil dipstick for a fuel smell or rising level.
- Mileage to watch. Owners typically reported problems around 8,600 miles; ask what was repaired near that point.
- Hybrid system. Check for hybrid-system warning lights and ask whether the high-voltage battery has been replaced or is still under warranty.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2021 Audi Q8. Not a substitute for a professional inspection.
Other Q8 years
Compare all years →Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Audi. How we calculate this →