2021 BMW M5 CS (F90) vs 2024 Audi RS 6 Avant GT (C8)
| Engine | |
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| Drivetrain | |
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| Top Speed | |
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| Acceleration | |
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| Total Power | |
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| Mileage | |
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| Curb Weight | |
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| Luggage | |
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| Top Speed | |
190 mph / 306 Km/h | 190 mph / 306 Km/h |
| 0-62 mph | |
3.0 seconds | 3.3 seconds |
| Power-to-Weight | |
6.44 lb/hp / 343 hp/Tonne | 7.36 lb/hp / 299 hp/Tonne |
| Total Power | |
626 hp / 635 ps | 621 hp / 630 ps |
| Total Torque | |
553 lb·ft / 750 N·m | 627 lb·ft / 850 N·m |
| Mileage | |
21.6 mpg | 19.3 mpg |
| Total Range | |
387 Miles | 372 Miles |
| Tailpipe CO2 | |
407 g/Mile | 446 g/Mile |
| Model Platform | |
5 Series (17-24) | A6 (18-25) |
| Door Count | |
4 | 5 |
| Seat Count | |
4 | 5 |
| Luggage Space | |
18.7 ft3 | 19.4-58.6 ft3 |
| Turning Radius | |
41.3 ft | 39.7 ft |
| Curb Weight | |
4,023 lbs | 4,575 lbs |
| Gross Weight | |
5,049 lbs | 6,008 lbs |
| Towing Capacity | |
1,653-4,630 lbs | |
| Length | |
196.9 in | 197.2 in |
| Width | |
74.9 in | 76.8 in |
| Height | |
57.8 in | 58.1 in |
| Wheelbase | |
117.4 in | 115.3 in |
| Front Track | |
64 in | 65.7 in |
| Rear Track | |
62.8 in | 65 in |
| Engine Name | |
S63B44 | |
| Layout | |
V8 | V8 |
| Capacity | |
4.4 Liter / 268.2 in3 | 4 Liter / 243.9 in3 |
| Peak Power | |
626 hp / 635 ps | 621 hp / 630 ps |
| Peak Torque | |
553 lb·ft / 750 N·m | 627 lb·ft / 850 N·m |
| Specific Output | |
2.33 hp/in3 | 2.54 hp/in3 |
| Aspiration | |
Bi-Turbo | Bi-Turbo |
| Valvetrain | |
DOHC | DOHC |
| Valves/Cylinder | |
4 (32v Total) | 4 (32v Total) |
| Fuel | |
Gasoline | Gasoline |
| Compression | |
10:1 | 9.7:1 |
| Bore x Stroke | |
3.504 x 3.476 in | 3.386 x 3.386 in |
| Fuel Delivery | |
Direct Injection | Direct Injection |
| Position | |
Front | Front |
| Orientation | |
Longitudinal | Longitudinal |
| Fuel Tank | |
18 gal | 19.3 gal |
| Peak Power | |
4 hp / 4 ps | |
| Battery Size | |
0.81 kWh | |
| Driven Wheels | |
Rear-biased Part-time All (4WD) | All (AWD) |
| Front Tyres | |
275/35R20 Y | 285/30 ZR22 |
| Rear Tyres | |
285/35R20 Y | 285/30 ZR22 |
| Transmission (AT) | |
8 Speeds | 8 Speeds |
| Front Brakes | |
Vented Disc | Vented Disc |
| Rear Brakes | |
Vented Disc | Vented Disc |
| Front Suspension | |
Double Wishbone | Multi-Link |
| Rear Suspension | |
Multi-Link | Multi-Link |