Mercedes-Benz GLC63 S 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 | Mercedes-Benz GLC63 SAMG GLC 63 S | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Selected trim | AMG GLC 63 S | GLS 450 4MATIC |
| Body style | SUV | SUV |
| Drivetrain | all wheel drive | all wheel drive |
| Fuel type | premium unleaded (required) | premium unleaded (required) |
| Transmission | 9-speed shiftable automatic | 9-speed shiftable automatic |
| Engine type | gas | mild hybrid |
| Model year | 2021 | 2026 |
Pricing & market
| Spec | Mercedes-Benz GLC63 SAMG GLC 63 S | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| MSRP | $84,500 (best) | $90,250 |
| For sale now | 0 | 0 |
Fuel economy & range
| Spec | Mercedes-Benz GLC63 SAMG GLC 63 S | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Combined MPG | 17 MPG | 21 MPG (best) |
| City MPG | 15 MPG | 19 MPG (best) |
| Highway MPG | 22 MPG | 24 MPG (best) |
| Fuel tank | 17.4 gal | 23.8 gal (best) |
Performance
| Spec | Mercedes-Benz GLC63 SAMG GLC 63 S | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Horsepower | 503 hp (best) | 375 hp |
| Torque | 516 lb-ft (best) | 369 lb-ft |
| Engine size | 4 L (best) | 3 L |
| Cylinders | V8 | I6 |
Size & capability
| Spec | Mercedes-Benz GLC63 SAMG GLC 63 S | Mercedes-Benz GLS450GLS 450 4MATIC |
|---|---|---|
| Seating | 5 seats | 7 seats (best) |
| Doors | 5 (best) | 4 |
| Cargo volume | 36.1 cu ft | 84.7 cu ft (best) |
| Towing capacity | 3,500 lbs | 7,700 lbs (best) |
| Curb weight | 4,586 lbs (best) | 5,523 lbs |
| Ground clearance | 6.4 in | 7.9 in (best) |
| Wheelbase | 113.1 in | 123.4 in (best) |
| Length | 186.9 in | 205 in (best) |
| Width | 76 in | 79.9 in (best) |
| Height | 62.4 in | 71.8 in (best) |
Safety & recalls
| Spec | Mercedes-Benz GLC63 SAMG GLC 63 S | 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 | Mercedes-Benz GLC63 S | Mercedes-Benz GLS450 |
|---|---|---|
| 1 | AMG GLC 63 S $84,500 MSRP(Currently comparing) | GLS 450 4MATIC $90,250 MSRP(Currently comparing) |
Mercedes-Benz GLC63 S vs Mercedes-Benz GLS450 FAQ
- Which is better: 2021 Mercedes-Benz GLC63 S or 2026 Mercedes-Benz GLS450?
- It depends on priorities. OpenDealer compares 2021 Mercedes-Benz GLC63 S 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: 2021 Mercedes-Benz GLC63 S or 2026 Mercedes-Benz GLS450?
- Based on starting MSRP, the 2021 Mercedes-Benz GLC63 S starts lower at $84,500.
- Which has better startingMsrp: 2021 Mercedes-Benz GLC63 S or 2026 Mercedes-Benz GLS450?
- The 2021 Mercedes-Benz GLC63 S leads on startingMsrp in this comparison (84,500).
- Which has better combinedMpg: 2021 Mercedes-Benz GLC63 S or 2026 Mercedes-Benz GLS450?
- The 2026 Mercedes-Benz GLS450 leads on combinedMpg in this comparison (21).
- Which has better horsepower: 2021 Mercedes-Benz GLC63 S or 2026 Mercedes-Benz GLS450?
- The 2021 Mercedes-Benz GLC63 S leads on horsepower in this comparison (503).
- Which has better seats: 2021 Mercedes-Benz GLC63 S or 2026 Mercedes-Benz GLS450?
- The 2026 Mercedes-Benz GLS450 leads on seats in this comparison (7).
- Which has better maxTowingLbs: 2021 Mercedes-Benz GLC63 S or 2026 Mercedes-Benz GLS450?
- The 2026 Mercedes-Benz GLS450 leads on maxTowingLbs in this comparison (7,700).