2018 BMW M3 vs. 2018 Audi S6
When we compare the 2018 BMW M3's and the 2018 Audi S6's specifications and ratings, the 2018 BMW M3 has the advantage in the areas of fuel efficiency, resale value and overall quality score. The 2018 Audi S6 has the advantage in the areas of typical lower range of pricing for used cars, reliability, interior volume and base engine power. Based on this comparison of the 2018 BMW M3's and the 2018 Audi S6's specifications and ratings, the 2018 Audi S6 is a better car than the 2018 BMW M3.
2018 BMW M3 vs. 2018 Audi S6 Pricing
A used 2018 BMW M3 ranges from $46,860 to $70,186 while a used 2018 Audi S6 is priced between $30,690 to $47,988.
2018 BMW M3 vs. 2018 Audi S6 Resale/Retained Value
Looking at the 5-year depreciation rate for both models, the 2018 BMW M3 loses 41.1 percent of its value and the 2018 Audi S6 loses 53.9 percent of its value. This means the 2018 BMW M3 retains 12.8 percentage points more of its value and has the advantage of higher resale value versus the 2018 Audi S6.
2018 BMW M3 vs. 2018 Audi S6 Quality Rating
The iSeeCars Overall Quality rating for the BMW M3 is 8.2 out of 10 while the Audi S6's quality rating is 7.7 out of 10. This results in the BMW M3 being ranked 13 out of 30 Best Luxury Compact Cars and the Audi S6 being ranked 16 out of 29 Best Luxury Midsize Cars.
2018 BMW M3 vs. 2018 Audi S6 Reliability Rating
iSeeCars’ Reliability Rating for the BMW M3 is 7.6 out of 10. For the Audi S6 the reliability rating is 7.8 out of 10. This gives the Audi S6 a slight advantage in reliability compared to the BMW M3.
Engine Power and Fuel Efficiency Comparison
For engine performance, the 2018 BMW M3’s base engine makes 425 horsepower, and the 2018 Audi S6 base engine makes 450 horsepower. The M3 is rated to deliver an average of 20 miles per gallon, with a highway range of 395 miles. The S6 is rated to deliver an average of 18 miles per gallon, with a highway range of 475 miles.This gives the 2018 BMW M3 the advantage in fuel efficiency and the 2018 Audi S6 the advantage in maximum range. Both models use premium unleaded.
Passenger Space Comparison
The 2018 Audi S6, a midsize car, has the advantage of offering more interior volume, reflected in more front shoulder room, rear head room, rear shoulder room, rear leg room, and cargo space. The 2018 BMW M3, a compact car, has the advantage in the areas of front head room and front leg room.
Pricing
New Asking Price:
-
Used Asking Price:
46860 - 70186
5-Year Depreciation (lower is better):
0.410857
Pricing
New Asking Price:
-
Used Asking Price:
30690 - 47988
5-Year Depreciation (lower is better):
0.538692
BMW M3 Scores & Rankings
Overall Score:
8.218848 / 10
Reliability:
7.637696 / 10
Retained Value:
8.8 / 10
Safety:
Not available
Audi S6 Scores & Rankings
Overall Score:
7.65 / 10
Reliability:
7.8 / 10
Retained Value:
7.5 / 10
Safety:
Not available
BMW M3 Rankings
Ranking
1 out of / 30Ranking
2 out of / 36Ranking
3 out of / 36Ranking
3 out of / 30Ranking
7 out of / 30Ranking
9 out of / 36Ranking
9 out of / 30Ranking
9 out of / 15Ranking
10 out of / 21Ranking
10 out of / 10Ranking
11 out of / 36Ranking
13 out of / 36Ranking
13 out of / 30Ranking
14 out of / 36Ranking
25 out of / 26Ranking
29 out of / 31Audi S6 Rankings
Ranking
6 out of / 11Ranking
10 out of / 29Ranking
13 out of / 29Ranking
13 out of / 20Ranking
16 out of / 29Ranking
18 out of / 29Ranking
18 out of / 29Ranking
19 out of / 29Available Body Styles
Sedan
Available Body Styles
Sedan
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
2018 BMW M3 Trim Levels
Base, CS
2018 Audi S6 Trim Levels
4.0T quattro Premium Plus, 4.0T quattro Prestige
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
IIHS Safety Rating:
Not yet available
Base Drivetrain Specifications
Horsepower:
425 hp @ 5500 rpm
Torque:
406 foot-lbs @ 1850 rpm
Power-to-Weight Ratio (higher is better):
0.119 hp per pound
Base Drivetrain Specifications
Horsepower:
450 hp @ 5800 rpm
Torque:
406 foot-lbs @ 1400 rpm
Power-to-Weight Ratio (higher is better):
0.102 hp per pound
Engine Specifications
Engine Size:
3 liters
Engine Configuration:
Inline
Number of Cylinders:
6
Transmission:
Manual
Standard/Optional Drivetrain Type:
RWD
EPA Fuel Economy
(City/Highway/Combined MPG):
17 / 25 / 20
Range (city/hwy):
269 / 395 miles
Recommended Fuel Type:
Premium Unleaded
Engine Specifications
Engine Size:
4 liters
Engine Configuration:
V
Number of Cylinders:
8
Transmission:
Automatic
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
16 / 24 / 18
Range (city/hwy):
317 / 475 miles
Recommended Fuel Type:
Premium Unleaded
Standard/Optional Features
Heated Seats
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Apple Car Play:
Available
Heated Steering Wheel:
Available
Sunroof/Moonroof:
Available
Wireless Smartphone Charging:
Available
Adaptive Cruise Control:
N/A
Android Auto:
N/A
Cooled/Ventilated Seats:
N/A
Standard/Optional Features
Heated Seats
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Apple Car Play:
Standard
Heated Steering Wheel:
Standard
Sunroof/Moonroof:
Standard
Wireless Smartphone Charging:
N/A
Adaptive Cruise Control:
Available
Android Auto:
Standard
Cooled/Ventilated Seats:
Available
Safety Equipment
360-Degree Camera:
N/A
Blind Spot Monitoring:
N/A
Driver Attention Monitoring:
N/A
Forward Collision Warning:
N/A
Lane Departure Warning:
N/A
Lane Keeping Assist:
N/A
Pedestrian Detection:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Safety Equipment
360-Degree Camera:
Available
Blind Spot Monitoring:
Standard
Driver Attention Monitoring:
N/A
Forward Collision Warning:
Standard
Lane Departure Warning:
N/A
Lane Keeping Assist:
N/A
Pedestrian Detection:
N/A
Rear Cross-Traffic Alert:
N/A
Rear Seat Reminder:
N/A
Interior Dimensions
Front Head Room:
40.3 inches
Front Leg Room:
42 inches
Front Shoulder Room:
55.1 inches
Rear Head Room:
37.7 inches
Rear Leg Room:
35.1 inches
Rear Shoulder Room:
55.1 inches
Cargo Space:
12 cubic feet
Overall Interior Volume:
96.2 cubic feet
Interior Dimensions
Front Head Room:
37.2 inches
Front Leg Room:
41.3 inches
Front Shoulder Room:
57.5 inches
Rear Head Room:
37.8 inches
Rear Leg Room:
37.4 inches
Rear Shoulder Room:
56.3 inches
Cargo Space:
14.1 cubic feet
Overall Interior Volume:
98.0 cubic feet
Exterior Dimensions
Curb Weight:
3575 lbs
Width:
80.2 inches
Height:
56.1 inches
Length:
184.5 inches
Wheelbase:
110.7 inches
Ground Clearance:
4.7 inches
Exterior Dimensions
Curb Weight:
4398 lbs
Width:
82.1 inches
Height:
56.8 inches
Length:
194.4 inches
Wheelbase:
114.8 inches
Ground Clearance:
4.6 inches
Standard Wheel/Tire Information
Wheel Size:
18.0 x 9.0 inches
Wheel Type:
aluminum alloy
Tire Size:
255/40R18
Standard Wheel/Tire Information
Wheel Size:
20.0 x 8.5 inches
Wheel Type:
aluminum alloy
Tire Size:
255/35R20