Audi Q8 vs Mercedes-Benz GLS450
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2026 Mercedes-Benz GLS450
Overview
| Spec | Audi Q8Premium | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Selected trim | Premium | GLS 450 4MATIC |
| Body style | SUV | SUV |
| Drivetrain | all wheel drive | all wheel drive |
| Fuel type | premium unleaded (required) | premium unleaded (required) |
| Transmission | 8-speed shiftable automatic | 9-speed shiftable automatic |
| Engine type | mild hybrid | mild hybrid |
| Model year | 2027 | 2026 |
Pricing & market
| Spec | Audi Q8Premium | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| MSRP | $76,900 (best) | $90,250 |
| Lowest listing price | $24,392 (best) | — |
| Median listing price | $80,724 (best) | — |
| Highest listing price | $100,968 (best) | — |
| For sale now | 56 (best) | 0 |
Fuel economy & range
| Spec | Audi Q8Premium | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Combined MPG | 19 MPG | 21 MPG (best) |
| City MPG | 17 MPG | 19 MPG (best) |
| Highway MPG | 23 MPG | 24 MPG (best) |
| Fuel tank | 22.5 gal | 23.8 gal (best) |
Performance
| Spec | Audi Q8Premium | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Horsepower | 335 hp | 375 hp (best) |
| Torque | 369 lb-ft | 369 lb-ft |
| Engine size | 3 L | 3 L |
| Cylinders | V6 | I6 |
Size & capability
| Spec | Audi Q8Premium | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Seating | 5 seats | 7 seats (best) |
| Doors | 4 | 4 |
| Cargo volume | 60.7 cu ft | 84.7 cu ft (best) |
| Towing capacity | 7,700 lbs | 7,700 lbs |
| Payload | 1,168 lbs (best) | — |
| Curb weight | 4,949 lbs (best) | 5,523 lbs |
| Ground clearance | — | 7.9 in (best) |
| Wheelbase | 118 in | 123.4 in (best) |
| Length | 196 in | 205 in (best) |
| Width | 79 in | 79.9 in (best) |
| Height | 67 in | 71.8 in (best) |
Safety & recalls
| Spec | Audi Q8Premium | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Open recalls (YMM scope) | None reported | None reported |
Highlighted values indicate the better figure for that spec when a clear winner exists. Specs reflect the selected trim for each vehicle. Drag a vehicle header to reorder columns. MSRP and specifications are manufacturer data; listing prices and inventory come from live dealer listings. Safety ratings are from NHTSA.
Trim overview
All available trims with MSRP. The trim selected above is highlighted; comparison specs use that selection.
| Trim | Audi Q8 | Mercedes-Benz GLS450 |
|---|---|---|
| 1 | Premium $76,900 MSRP(Currently comparing) | GLS 450 4MATIC $90,250 MSRP(Currently comparing) |
| 2 | Premium Plus $82,100 MSRP | — |
| 3 | Prestige $87,500 MSRP | — |
Live inventory
Audi Q856 for sale
See all
Used2019 Audi Q8
Automatic
White•Sarder Brown95,338 mi$24,392Velocity Autohaus
Hasbrouck Heights, NJ
Used2023 Audi Q8
55 Prestige
Carrara White•Black46,671 mi$47,988Volkswagen of Kirkland
Kirkland, WA
Certified2026 Audi Q8
55 Premium Plus
Glacier White metallic•Black4,056 mi$64,495Audi West Chester
West Chester, PA
Certified2026 Audi Q8
55 Premium Plus
Glacier White metallic•Black6,449 mi$63,995Audi West Chester
West Chester, PA
Used2022 Audi Q8
55 Premium Plus
Okapi Brown45,903 mi$39,695Land Rover Ocala
Ocala, FL
Used2019 Audi Q8
Premium Plus
Glacier White•SAIGA BEIGE95,275 mi$24,423Jack Hanania Audi Jacksonville
Jacksonville, FL
Audi Q8 vs Mercedes-Benz GLS450 FAQ
- Which is better: 2027 Audi Q8 or 2026 Mercedes-Benz GLS450?
- It depends on priorities. OpenDealer compares 2027 Audi Q8 vs 2026 Mercedes-Benz GLS450 on MSRP, fuel economy, horsepower, seating, towing, NHTSA safety ratings, and live market prices so you can weigh the tradeoffs.
- Which costs less: 2027 Audi Q8 or 2026 Mercedes-Benz GLS450?
- Based on starting MSRP, the 2027 Audi Q8 starts lower at $76,900. Live Audi Q8 listings start at $24,392.
- Which has better startingMsrp: 2027 Audi Q8 or 2026 Mercedes-Benz GLS450?
- The 2027 Audi Q8 leads on startingMsrp in this comparison (76,900).
- Which has better combinedMpg: 2027 Audi Q8 or 2026 Mercedes-Benz GLS450?
- The 2026 Mercedes-Benz GLS450 leads on combinedMpg in this comparison (21).
- Which has better horsepower: 2027 Audi Q8 or 2026 Mercedes-Benz GLS450?
- The 2026 Mercedes-Benz GLS450 leads on horsepower in this comparison (375).
- Which has better seats: 2027 Audi Q8 or 2026 Mercedes-Benz GLS450?
- The 2026 Mercedes-Benz GLS450 leads on seats in this comparison (7).