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 (recommended) | premium unleaded (required) |
| Transmission | 8-speed 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 |
| For sale now | 0 | 0 |
Fuel economy & range
| Spec | Audi Q8Premium | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Combined MPG | 19 MPG (best) | — |
| City MPG | 17 MPG (best) | — |
| Highway MPG | 23 MPG (best) | — |
| Fuel tank | 23 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 | — | 84.7 cu ft (best) |
| Towing capacity | — | 7,700 lbs (best) |
| Curb weight | 5,027 lbs (best) | 5,523 lbs |
| Ground clearance | 6 in | 7.9 in (best) |
| Wheelbase | 118 in | 123.4 in (best) |
| Length | 197 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 $76,900 MSRP | — |
| 3 | Prestige quattro $76,900 MSRP | — |