BMW 6 Series vs. Audi S5
iSeeCars' unbiased and data-driven comparison of the BMW 6 Series and Audi S5 contrasts the two cars across a broad spectrum of vehicle specifications to determine which car is better. In addition to comparing pricing and specs, iSeeCars uses all the ratings, rankings, and insights from its comprehensive analyses of each vehicle model, including calculations of reliability, safety, depreciation, value retention, and the vehicle's projected lifetime recalls (based on analyzing over 25 billion data points). This in-depth evaluation is used to identify which vehicle represents a better overall choice for shoppers who are considering both the BMW 6 Series and the Audi S5.
In comparing the BMW 6 Series's and the Audi S5's specifications and ratings, the BMW 6 Series has the advantage in the area of interior volume. The Audi S5 has the advantage in the areas of typical lower range of pricing for one- to five-year-old used cars and base engine power. The BMW 6 Series and Audi S5 have the same fuel efficiency. Based on this comparison of the BMW 6 Series's and the Audi S5's specifications and ratings, the Audi S5 is a better car than the BMW 6 Series.
Pricing: A used 2018 BMW 6 Series ranges from $28,018 to $49,945 while a used 2018 Audi S5 is priced between $27,575 to $42,543.
Engine Power and Fuel Efficiency Comparison: For engine performance, the BMW 6 Series’s base engine makes 315 horsepower, and the Audi S5 base engine makes 354 horsepower. Both the 6 Series and the S5 are rated to deliver an average of 23 miles per gallon, with highway ranges of 537 and 444 miles respectively. Both models use premium unleaded.
Passenger Space Comparison: The BMW 6 Series has the advantage of offering more interior volume, reflected in more front head room, front shoulder room, front leg room, rear head room, rear shoulder room, and cargo space. The Audi S5 has the advantage in the area of rear leg room.
New Car Pricing
Asking Price:
-
Starting MSRP:
$86,700
Category Avg Starting MSRP:
N/A
Category Starting MSRP Range:
N/A
New Car Pricing
Asking Price:
-
Starting MSRP:
$62,300
Category Avg Starting MSRP:
(Luxury Sports Cars)
$91,675
Category Starting MSRP Range:
(Luxury Sports Cars)
$39,950 - $453,200
Used Car Pricing
Avg Used Car Price:
$40,079
Price Range:
$28,018 - $49,945
Category Avg Price:
N/A
Category Avg Price Range:
N/A
# Used Cars for Sale Nationally:
40
Avg Mileage of Used Cars for Sale:
65,897
# Good or Great Deals:
6
Used Car Pricing
Avg Used Car Price:
$35,577
Price Range:
$27,575 - $42,543
Category Avg Price:
(Luxury Sports Cars)
$67,639
Category Avg Price Range:
(Luxury Sports Cars)
$27,289 - $200,784
# Used Cars for Sale Nationally:
43
Avg Mileage of Used Cars for Sale:
72,130
# Good or Great Deals:
10
BMW 6 Series Scores & Rankings
Overall Score:
Not available
Reliability:
Not available
Retained Value:
Not available
Safety:
Not available
Audi S5 Scores & Rankings
Overall Score:
7.7 / 10
Reliability:
7.7 / 10
Retained Value:
7.6 / 10
Safety:
Not available
iSeeCars Reliability Insights for BMW 6 Series
Remaining Life Expectancy (years):
2.8
Typical Category Remaining Life Expectancy:
N/A
Category Remaining Life Expectancy Range:
N/A
Chance of Reaching 200k Miles for a New Car:
0%
iSeeCars Reliability Insights for Audi S5
Remaining Life Expectancy (years):
4.3
Typical Category Remaining Life Expectancy:
(Luxury Sports Cars)
6.9
Category Remaining Life Expectancy Range:
(Luxury Sports Cars)
2.7 - 11.2
Chance of Reaching 200k Miles for a New Car:
0%
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
5
Typical Category Recalls:
N/A
Category Range for Recalls:
N/A
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
4.3
Typical Category Recalls:
(Luxury Sports Cars)
1.6
Category Range for Recalls:
(Luxury Sports Cars)
0.6 - 7
BMW 6 Series Rankings
Not yet available
Audi S5 Rankings
Ranking
1 out of / 2Ranking
3 out of / 41Ranking
3 out of / 27Ranking
4 out of / 7Ranking
6 out of / 19Ranking
7 out of / 27Ranking
9 out of / 32Ranking
9 out of / 27Ranking
10 out of / 41Ranking
10 out of / 27Ranking
11 out of / 41Ranking
12 out of / 27Ranking
16 out of / 27Ranking
17 out of / 41Ranking
18 out of / 41Ranking
21 out of / 27Ranking
31 out of / 41Ranking
37 out of / 41Available Body Styles
Convertible, Hatchback, Sedan
Available Body Styles
Convertible, Coupe
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
BMW 6 Series Trim Levels
640i, 640i xDrive, 650i, 650i xDrive, 640i xDrive Gran Turismo, 640i Gran Coupe, 640i xDrive Gran Coupe, 650i Gran Coupe, 650i xDrive Gran Coupe, ALPINA B6 xDrive Gran Coupe
Audi S5 Trim Levels
3.0T quattro Premium Plus, 3.0T 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
2025 NHTSA Overall Rating:
Not yet available
2025 NHTSA Front Crash Overall Rating:
Not yet available
2025 NHTSA Side Crash Overall Rating:
Not yet available
2025 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2025 NHTSA Overall Rating:
Not yet available
2025 NHTSA Front Crash Overall Rating:
Not yet available
2025 NHTSA Side Crash Overall Rating:
Not yet available
2025 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Base Drivetrain Specs
Horsepower:
315 hp @ 5800 rpm
Torque:
330 foot-lbs @ 1300 rpm
Power-to-Weight Ratio (higher is better):
0.074 hp per pound
Base Drivetrain Specs
Horsepower:
354 hp @ 5400 rpm
Torque:
369 foot-lbs @ 1370 rpm
Power-to-Weight Ratio (higher is better):
0.084 hp per pound
Engine Specifications
Engine Size:
3 liters
Engine Configuration:
Inline
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
RWD / AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
20 / 29 / 23
Range (city/hwy):
370 / 537 miles
Recommended Fuel Type:
Premium Unleaded
Engine Specifications
Engine Size:
3 liters
Engine Configuration:
V
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
20 / 29 / 23
Range (city/hwy):
306 / 444 miles
Recommended Fuel Type:
Premium Unleaded
Standard/Optional Features
Alloy wheels:
Standard
Bluetooth:
Standard
Heated Seats
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Paddle Shifters:
Standard
Parking Sensors:
Standard
Power outlet:
Standard
Quad Seats:
Standard
Roadside assistance:
Standard
Satellite radio:
Standard
Voice Recognition:
Standard
Wifi:
Standard
Wireless Smartphone Charging:
Standard
Adaptive Cruise Control:
Available
Apple CarPlay:
Available
Automatic Parking:
Available
Cooled/Ventilated Seats:
Available
Heated Steering Wheel:
Available
Air Suspension:
N/A
Android Auto:
N/A
Bench Seats:
N/A
Captain's seat:
N/A
Front Bench Seats:
N/A
Internet Radio:
N/A
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Power Lift Gate:
N/A
Roof Rack:
N/A
Sunroof/Moonroof:
N/A
Trailer Hitch:
N/A
Standard/Optional Features
Alloy wheels:
Standard
Bluetooth:
Standard
Heated Seats
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Navigation System:
Available
Paddle Shifters:
Standard
Parking Sensors:
Standard
Power outlet:
Standard
Quad Seats:
N/A
Roadside assistance:
Standard
Satellite radio:
Standard
Voice Recognition:
Standard
Wifi:
Available
Wireless Smartphone Charging:
N/A
Adaptive Cruise Control:
Available
Apple CarPlay:
Standard
Automatic Parking:
N/A
Cooled/Ventilated Seats:
Available
Heated Steering Wheel:
Available
Air Suspension:
Available
Android Auto:
Standard
Bench Seats:
Standard
Captain's seat:
N/A
Front Bench Seats:
N/A
Internet Radio:
N/A
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Power Lift Gate:
Standard
Roof Rack:
N/A
Sunroof/Moonroof:
N/A
Trailer Hitch:
N/A
Safety Features
Backup camera:
Standard
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 Features
Backup camera:
Standard
360-Degree Camera:
Available
Blind Spot Monitoring:
Standard
Driver Attention Monitoring:
N/A
Forward Collision Warning:
Standard
Lane Departure Warning:
Available
Lane Keeping Assist:
Available
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:
42.1 inches
Front Shoulder Room:
56.9 inches
Rear Head Room:
36.5 inches
Rear Leg Room:
30.5 inches
Rear Shoulder Room:
49.6 inches
Cargo Space:
10.6 cubic feet
Overall Interior Volume:
87.7 cubic feet
Interior Dimensions
Front Head Room:
40 inches
Front Leg Room:
41.3 inches
Front Shoulder Room:
55.3 inches
Rear Head Room:
36.3 inches
Rear Leg Room:
33.1 inches
Rear Shoulder Room:
46.9 inches
Cargo Space:
9.3 cubic feet
Overall Interior Volume:
81.0 cubic feet
Exterior Dimensions
Curb Weight:
4250 lbs
Width:
82.3 inches
Height:
53.7 inches
Length:
192.6 inches
Wheelbase:
112.4 inches
Ground Clearance:
4.8 inches
Exterior Dimensions
Curb Weight:
4211 lbs
Width:
79.9 inches
Height:
54.4 inches
Length:
184.7 inches
Wheelbase:
108.9 inches
Ground Clearance:
Not yet available
Standard Wheel/Tire Information
Wheel Size:
18.0 x 8.0 inches
Wheel Type:
aluminum alloy
Tire Size:
245/45R18
Standard Wheel/Tire Information
Wheel Size:
18.0 x 8.5 inches
Wheel Type:
aluminum alloy
Tire Size:
255/35R18
Exterior Colors
Black
Black Sapphire Metallic / Carbon Black Metallic / Citrin Black Metallic / Jet Black / Ruby Black Metallic
Blue
Mediterranean Blue Metallic / Sonic Speed Blue Metallic / Tanzanite Blue Metallic
Brown
Frozen Bronze Metallic / Jatoba Brown Metallic
Gray
Moonstone Metallic / Space Gray Metallic
Red
Melbourne Red Metallic
Silver
Glacier Silver Metallic
White
Alpine White / Frozen Brilliant White Metallic / Mineral White Metallic
Green
Not available
Exterior Colors
Black
Brilliant Black / Mythos Black Metallic
Blue
Navarra Blue Metallic
Brown
Not available
Gray
Daytona Gray Pearl Effect
Red
Tango Red Metallic
Silver
Florett Silver Metallic
White
Glacier White Metallic / Ibis White
Green
Gotland Green Metallic
Interior Colors
Beige
Champagne / Cognac/Black
Black
Black
Brown
Amaro Brown / Canyon Brown / Cinnamon Brown
Gray
Ivory White / Ivory White/Black / Platinum/Black
Red
Vermilion Red
White
Opal White
Interior Colors
Beige
Not available
Black
Black
Brown
Not available
Gray
Rotor Gray
Red
Magma Red
White
Not available
