2026Canadian prices and NRCan ratings
BMW M440i xDrive vs Mercedes-Benz Maybach AMG SL 680 4MATIC
BMWM440i xDriveCombined8.1 L/100 kmAhead on 2 pointsMercedes-BenzMaybach AMG SL 680 4MATICCombined14.5 L/100 km
Key differences
From published figures, not a road test- The M440i xDrive uses 6.4 L/100 km less combined (8.1 vs 14.5), about 1,280 L less fuel over 20,000 km.
- Higher Vehonix efficiency score for the M440i xDrive: 7.4/10 vs 2.3/10.
Side by side
Add a third model →| Spec | Mercedes-BenzMercedes-Benz Maybach AMG SL 680 4MATIC | |
|---|---|---|
| MSRP from | — | — |
| Vehonix efficiency score (out of 10) | 7.4/10 | 2.3/10 |
| Body | Convertible | Convertible |
| Fuel | Gasoline | Gasoline |
| Combined (L or Le/100 km) | 8.1 | 14.5 |
| City | 8.9 | 17 |
| Highway | 7.1 | 11.3 |
| Electric range | — | — |
| Level 2 charge (240 V) | — | — |
| Total range (PHEV) | — | — |
| CO2 (g/km) | 187 | 347 |
| CO2 rating (out of 10) | — | — |
| Smog rating (out of 10) | — | — |
| Max power | — | — |
| Seats | — | — |
| Drivetrain | — | — |
| AWD / 4WD offered (winter) | No | No |
| Fuel required | — | — |
| Manual offered | No | No |
| Rated configurations | 2 | 1 |
| 2026 safety recalls (Transport Canada) | 0 | 0 |
The best figure on each row is highlighted. MSRP is the cheapest checked trim; fuel use is the most efficient trim.