Audi RS Q8 vs Mercedes-Benz GLS580
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2026 Mercedes-Benz GLS580
Overview
| Spec | Audi RS Q8performance | Mercedes-Benz GLS580GLS 580 4MATIC |
|---|---|---|
| Selected trim | performance | GLS 580 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 | 2026 | 2026 |
Pricing & market
| Spec | Audi RS Q8performance | Mercedes-Benz GLS580GLS 580 4MATIC |
|---|---|---|
| MSRP | $138,300 | $116,150 (best) |
| For sale now | 0 | 0 |
Fuel economy & range
| Spec | Audi RS Q8performance | Mercedes-Benz GLS580GLS 580 4MATIC |
|---|---|---|
| Combined MPG | 16 MPG | 16 MPG |
| City MPG | 14 MPG | 14 MPG |
| Highway MPG | 20 MPG (best) | 19 MPG |
| Fuel tank | 22.5 gal | 23.8 gal (best) |
Performance
| Spec | Audi RS Q8performance | Mercedes-Benz GLS580GLS 580 4MATIC |
|---|---|---|
| Horsepower | 631 hp (best) | 510 hp |
| Torque | 627 lb-ft (best) | 538 lb-ft |
| Engine size | 4 L | 4 L |
| Cylinders | V8 | V8 |
Size & capability
| Spec | Audi RS Q8performance | Mercedes-Benz GLS580GLS 580 4MATIC |
|---|---|---|
| Seating | 5 seats | 7 seats (best) |
| Doors | 4 | 4 |
| Cargo volume | 60 cu ft | 84.7 cu ft (best) |
| Towing capacity | 7,700 lbs | 7,700 lbs |
| Payload | 1,036 lbs (best) | — |
| Curb weight | 5,434 lbs (best) | 5,842 lbs |
| Ground clearance | — | 7.9 in (best) |
| Wheelbase | 117.9 in | 123.4 in (best) |
| Length | 197.7 in | 205.2 in (best) |
| Width | 79 in | 79.9 in (best) |
| Height | 67.5 in | 71.8 in (best) |
Safety & recalls
| Spec | Audi RS Q8performance | Mercedes-Benz GLS580GLS 580 4MATIC |
|---|---|---|
| Rollover | 4 / 5 ★ (best) | — |
| Open recalls (YMM scope) | 1 | None reported (best) |
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 RS Q8 | Mercedes-Benz GLS580 |
|---|---|---|
| 1 | performance $138,300 MSRP(Currently comparing) | GLS 580 4MATIC $116,150 MSRP(Currently comparing) |