Audi S6 vs. BMW M550
$75,900
$81,500
Highlights
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Starting MSRP |
$75,900
|
$81,500
|
| Engine Type |
Twin Turbo Gas/Electric V-6
|
Twin Turbo Premium Gasoline V-8
|
| MPG |
19 City / 27 Hwy
|
17 City / 25 Hwy
|
| Horsepower |
444 hp
|
523 hp
|
| Drive Type |
All Wheel Drive
|
All Wheel Drive
|
| Seating Capacity |
5
|
5
|
| Basic Warranty |
4 yr / 50,000 mi
|
4 yr / 50,000 mi
|
Engine
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Displacement |
2.9 L/177
|
4.4 L/268
|
| SAE Net Torque @ RPM |
442 @ 2700
|
553 @ 1800
|
| SAE Net Horsepower @ RPM |
444 @ 5900
|
523 @ 5500
|
| Engine Type |
Twin Turbo Gas/Electric V-6
|
Twin Turbo Premium Gasoline V-8
|
| Transmission Options |
|
|
| MPG |
19 City / 27 Hwy
|
17 City / 25 Hwy
|
| Total Cooling System Capacity |
N/A
|
N/A
|
Tires & Wheels
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Front Wheel Material |
Aluminum
|
Aluminum
|
| Rear Tire Size |
P255/35YR21
|
P275/35YR19
|
| Front Tire Size |
P255/35YR21
|
P245/40YR19
|
| Spare Wheel Material |
Steel
|
N/A
|
| Spare Wheel Size |
Compact in
|
N/A
|
| Front Wheel Size |
21 X 8.5 in
|
19 X 8 in
|
| Rear Wheel Material |
Aluminum
|
Aluminum
|
| Rear Wheel Size |
21 X 8.5 in
|
19 X 9 in
|
| Spare Tire Size |
Compact
|
N/A
|
Suspension
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Suspension Type - Front |
Multi-Link
|
Double Wishbone
|
| Suspension Type - Front (Cont.) |
Multi-Link
|
Double Wishbone
|
| Suspension Type - Rear (Cont.) |
Multi-Link
|
Multi-Link
|
| Suspension Type - Rear |
Multi-Link
|
Multi-Link
|
Steering
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Steering Type |
Rack-Pinion
|
Rack-Pinion
|
| Turning Diameter - Wall to Wall |
N/A
|
N/A
|
| Steering Ratio (:1), Overall |
N/A
|
N/A
|
| Turning Diameter - Curb to Curb |
40 ft
|
41 ft
|
| Lock to Lock Turns (Steering) |
N/A
|
N/A
|
Measurements
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Passenger Volume |
N/A
|
99 ft³
|
| Length, Overall |
195 in
|
196 in
|
| Second Hip Room |
N/A
|
N/A
|
| Front Head Room |
38 in
|
39 in
|
| Liftover Height |
N/A
|
N/A
|
| Second Head Room |
38 in
|
38 in
|
| Passenger Capacity |
5
|
5
|
| Trunk Volume |
14 ft³
|
14 ft³
|
| Min Ground Clearance |
N/A
|
N/A
|
| Wheelbase |
115 in
|
117 in
|
| Width, Max w/o mirrors |
74 in
|
74 in
|
| Second Shoulder Room |
57 in
|
56 in
|
| Track Width, Front |
64 in
|
63 in
|
| Front Shoulder Room |
58 in
|
59 in
|
| Front Hip Room |
N/A
|
N/A
|
| Second Leg Room |
37 in
|
37 in
|
| Height, Overall |
57 in
|
58 in
|
| Front Leg Room |
41 in
|
41 in
|
| Track Width, Rear |
64 in
|
63 in
|
Weight & Capacity
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Base Curb Weight |
4,519 lbs
|
4,275 lbs
|
| Fuel Tank Capacity, Approx |
19 gal
|
18 gal
|
| Dead Weight Hitch - Max Trailer Wt. |
N/A
|
N/A
|
| Aux Fuel Tank Capacity, Approx |
N/A
|
N/A
|
| Wt Distributing Hitch - Max Trailer Wt. |
N/A
|
N/A
|
| Wt Distributing Hitch - Max Tongue Wt. |
N/A
|
N/A
|
| Dead Weight Hitch - Max Tongue Wt. |
N/A
|
N/A
|
Safety
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Rear Cross Traffic Alert |
Not available
|
Standard
|
| Backup Camera |
Not available
|
Standard
|
| Lane Departure Warning |
Standard
|
Standard
|
| Blind Spot Monitor |
Not available
|
Standard
|
| Stability Control |
Standard
|
Optional
|
| Automatic Emergency Braking |
Standard
|
Not available
|
Entertainment
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Bluetooth® |
Standard
|
Not available
|
Electrical
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Cold Cranking Amps @ 0° F (Primary) |
N/A
|
N/A
|
| Maximum Alternator Capacity (amps) |
N/A
|
N/A
|
Brakes
| 2025 Audi S6 | 2023 BMW M550 | |
|---|---|---|
| Rear Brake Rotor Diam x Thickness |
14 in
|
N/A
|
| Drum - Rear (Yes or ) |
N/A
|
N/A
|
| Disc - Front (Yes or ) |
Yes
|
Yes
|
| Brake ABS System (Second Line) |
N/A
|
N/A
|
| Disc - Rear (Yes or ) |
Yes
|
Yes
|
| Brake Type |
4-Wheel Disc
|
4-Wheel Disc
|
| Front Brake Rotor Diam x Thickness |
16 in
|
N/A
|
| Brake ABS System |
4-Wheel
|
4-Wheel
|
FAQ
Which is more fuel efficient, the 2025 Audi S6 or the 2023 BMW M550?
The 2025 Audi S6 is more fuel efficient than the 2023 BMW M550 with 22 MPG combined versus 20 MPG combined.
Which car is cheaper, the 2025 Audi S6 or the 2023 BMW M550?
The 2025 Audi S6 is cheaper than the 2023 BMW M550 with a $75,900 starting MSRP versus a $81,500 starting MSRP.
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