Audi Q9 vs Mercedes-Benz GLS450
Side-by-side comparison from manufacturer specifications, NHTSA safety data, and live dealer listings.
Vehicles
Vehicles
2027 Mercedes-Benz GLS450
Overview
| Spec | Audi Q9Premium | Mercedes-Benz GLS450GLS 450 |
|---|---|---|
| Selected trim | Premium | GLS 450 |
| 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 automatic |
| Engine type | gas | mild hybrid |
| Model year | 2027 | 2027 |
Pricing & market
| Spec | Audi Q9Premium | Mercedes-Benz GLS450GLS 450 |
|---|---|---|
| MSRP | $87,700 (best) | $93,950 |
| For sale now | 0 | 0 |
Fuel economy & range
| Spec | Audi Q9Premium | Mercedes-Benz GLS450GLS 450 |
|---|---|---|
| Combined MPG | — | 21 MPG (best) |
| City MPG | — | 19 MPG (best) |
| Highway MPG | — | 24 MPG (best) |
| Fuel tank | 21.1 gal | 24 gal (best) |
Performance
| Spec | Audi Q9Premium | Mercedes-Benz GLS450GLS 450 |
|---|---|---|
| Horsepower | 429 hp (best) | 375 hp |
| Torque | 442 lb-ft (best) | 413 lb-ft |
| Engine size | 2.9 L | 3 L (best) |
| Cylinders | V6 | I6 |
Size & capability
| Spec | Audi Q9Premium | Mercedes-Benz GLS450GLS 450 |
|---|---|---|
| Seating | 7 seats | 7 seats |
| Doors | 4 | 4 |
| Cargo volume | 87.7 cu ft (best) | — |
| Towing capacity | 7,700 lbs | 7,700 lbs |
| Curb weight | 5,302 lbs (best) | — |
| Ground clearance | — | 8 in (best) |
| Wheelbase | 123.5 in (best) | 123 in |
| Length | 209 in (best) | 205 in |
| Width | 79.2 in | 80 in (best) |
| Height | 71.4 in | 72 in (best) |
Safety & recalls
| Spec | Audi Q9Premium | Mercedes-Benz GLS450GLS 450 |
|---|---|---|
| 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 Q9 | Mercedes-Benz GLS450 |
|---|---|---|
| 1 | Premium $87,700 MSRP(Currently comparing) | GLS 450 $93,950 MSRP(Currently comparing) |
| 2 | Premium Plus $93,300 MSRP | — |
| 3 | Prestige $102,400 MSRP | — |
Audi Q9 vs Mercedes-Benz GLS450 FAQ
- Which is better: 2027 Audi Q9 or 2027 Mercedes-Benz GLS450?
- It depends on priorities. OpenDealer compares 2027 Audi Q9 vs 2027 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 Q9 or 2027 Mercedes-Benz GLS450?
- Based on starting MSRP, the 2027 Audi Q9 starts lower at $87,700.
- Which has better startingMsrp: 2027 Audi Q9 or 2027 Mercedes-Benz GLS450?
- The 2027 Audi Q9 leads on startingMsrp in this comparison (87,700).
- Which has better combinedMpg: 2027 Audi Q9 or 2027 Mercedes-Benz GLS450?
- The 2027 Mercedes-Benz GLS450 leads on combinedMpg in this comparison (21).
- Which has better horsepower: 2027 Audi Q9 or 2027 Mercedes-Benz GLS450?
- The 2027 Audi Q9 leads on horsepower in this comparison (429).