Mercedes-Benz SLR vs. Audi R8
iSeeCars' unbiased and data-driven comparison of the Mercedes-Benz SLR and Audi R8 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 Mercedes-Benz SLR and the Audi R8.
In comparing the Mercedes-Benz SLR's and the Audi R8's specifications and ratings, the Mercedes-Benz SLR has the advantage in the area of base engine power. The Audi R8 has the advantage in the area of fuel efficiency. Based on this comparison of the Mercedes-Benz SLR's and the Audi R8's specifications and ratings, the two cars are fairly comparable.
Engine Power and Fuel Efficiency Comparison: For engine performance, the Mercedes-Benz SLR’s base engine makes 617 horsepower, and the Audi R8 base engine makes 420 horsepower. The SLR is rated to deliver an average of 13 miles per gallon, with a highway range of 410 miles. The R8 is rated to deliver an average of 15 miles per gallon, with a highway range of 452 miles. This gives the Audi R8 the fuel efficiency and maximum range advantage over the Mercedes-Benz SLR. Both models use gasoline.
New Car Pricing
Asking Price:
-
Starting MSRP:
495000
Category Avg Starting MSRP:
N/A
Category Starting MSRP Range:
N/A
New Car Pricing
Asking Price:
-
Starting MSRP:
114200
Category Avg Starting MSRP:
(Luxury Sports Cars)
68129
Category Starting MSRP Range:
(Luxury Sports Cars)
35200 - 117500
Used Car Pricing
Avg Used Car Price:
Price Range:
-
Category Avg Price:
N/A
Category Avg Price Range:
N/A
# Used Cars for Sale Nationally:
0
Avg Mileage of Used Cars for Sale:
# Good or Great Deals:
0
Used Car Pricing
Avg Used Car Price:
75223
Price Range:
51381 - 120650
Category Avg Price:
(Luxury Sports Cars)
37349
Category Avg Price Range:
(Luxury Sports Cars)
11279 - 75223
# Used Cars for Sale Nationally:
17
Avg Mileage of Used Cars for Sale:
38299
# Good or Great Deals:
3
Mercedes-Benz SLR Scores & Rankings
Overall Score:
Not available
Reliability:
Not available
Retained Value:
Not available
Safety:
Not available
Audi R8 Scores & Rankings
Overall Score:
Not available
Reliability:
Not available
Retained Value:
8.1 / 10
Safety:
Not available
iSeeCars Reliability Insights for Mercedes-Benz SLR
Remaining Life Expectancy (years):
Typical Category Remaining Life Expectancy:
N/A
Category Remaining Life Expectancy Range:
N/A
Chance of Reaching 200k Miles for a New Car:
iSeeCars Reliability Insights for Audi R8
Remaining Life Expectancy (years):
Typical Category Remaining Life Expectancy:
N/A
Category Remaining Life Expectancy Range:
N/A
Chance of Reaching 200k Miles for a New Car:
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
1.4049207873113472
Typical Category Recalls:
N/A
Category Range for Recalls:
N/A
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
1.0271840447751066
Typical Category Recalls:
(Luxury Sports Cars)
1.5
Category Range for Recalls:
(Luxury Sports Cars)
1.0 - 5.9
Mercedes-Benz SLR Rankings
Not yet available
Audi R8 Rankings
Ranking
9 out of / 39Ranking
9 out of / 39Ranking
19 out of / 39Ranking
22 out of / 39Available Body Styles
Convertible
Available Body Styles
Coupe
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline
Mercedes-Benz SLR Trim Levels
SLR McLaren
Audi R8 Trim Levels
quattro
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
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
2026 NHTSA Overall Rating:
Not yet available
2026 NHTSA Front Crash Overall Rating:
Not yet available
2026 NHTSA Side Crash Overall Rating:
Not yet available
2026 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2026 NHTSA Overall Rating:
Not yet available
2026 NHTSA Front Crash Overall Rating:
Not yet available
2026 NHTSA Side Crash Overall Rating:
Not yet available
2026 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Base Drivetrain Specs
Horsepower:
617 hp @ 6500 rpm
Torque:
575 foot-lbs @ 3250 rpm
Power-to-Weight Ratio (higher is better):
0.160 hp per pound
Base Drivetrain Specs
Horsepower:
420 hp @ 7800 rpm
Torque:
317 foot-lbs @ 4500 rpm
Power-to-Weight Ratio (higher is better):
0.117 hp per pound
Engine Specifications
Engine Size:
5.5 liters
Engine Configuration:
V
Number of Cylinders:
8
Transmission:
Automatic
Standard/Optional Drivetrain Type:
RWD
EPA Fuel Economy
(City/Highway/Combined MPG):
12 / 16 / 13
Range (city/hwy):
307 / 410 miles
Recommended Fuel Type:
Gasoline
Engine Specifications
Engine Size:
4.2 liters
Engine Configuration:
V
Number of Cylinders:
8
Transmission:
Manual
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
12 / 19 / 15
Range (city/hwy):
286 / 452 miles
Recommended Fuel Type:
Gasoline
Standard/Optional Features
Bluetooth:
Standard
Keyless Entry:
Standard
Leather Upholstery:
Standard
Navigation System:
Standard
Paddle Shifters:
Standard
Roadside assistance:
Standard
Alloy wheels:
Available
Adaptive Cruise Control:
N/A
Air Suspension:
N/A
Android Auto:
N/A
Apple CarPlay:
N/A
Automatic Parking:
N/A
Bench Seats:
N/A
Captain's seat:
N/A
Cooled/Ventilated Seats:
N/A
Front Bench Seats:
N/A
Heated Seats
N/A
Heated Steering Wheel:
N/A
Internet Radio:
N/A
Keyless Ignition:
N/A
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Parking Sensors:
N/A
Power Lift Gate:
N/A
Power outlet:
N/A
Quad Seats:
N/A
Roof Rack:
N/A
Satellite radio:
N/A
Sunroof/Moonroof:
N/A
Trailer Hitch:
N/A
Voice Recognition:
N/A
Wifi:
N/A
Wireless Smartphone Charging:
N/A
Standard/Optional Features
Bluetooth:
N/A
Keyless Entry:
Standard
Leather Upholstery:
Standard
Navigation System:
Available
Paddle Shifters:
Standard
Roadside assistance:
N/A
Alloy wheels:
Standard
Adaptive Cruise Control:
N/A
Air Suspension:
N/A
Android Auto:
N/A
Apple CarPlay:
N/A
Automatic Parking:
N/A
Bench Seats:
N/A
Captain's seat:
N/A
Cooled/Ventilated Seats:
N/A
Front Bench Seats:
N/A
Heated Seats
Standard
Heated Steering Wheel:
N/A
Internet Radio:
N/A
Keyless Ignition:
N/A
Massage Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Parking Sensors:
Standard
Power Lift Gate:
N/A
Power outlet:
Standard
Quad Seats:
N/A
Roof Rack:
N/A
Satellite radio:
Standard
Sunroof/Moonroof:
N/A
Trailer Hitch:
N/A
Voice Recognition:
N/A
Wifi:
N/A
Wireless Smartphone Charging:
N/A
Safety Features
360-Degree Camera:
N/A
Backup 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
360-Degree Camera:
N/A
Backup 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
Interior Dimensions
Front Head Room:
36.1 inches
Front Leg Room:
44.2 inches
Front Shoulder Room:
Not yet available
Rear Head Room:
Not yet available
Rear Leg Room:
Not yet available
Rear Shoulder Room:
Not yet available
Cargo Space:
7.2 cubic feet
Overall Interior Volume:
48.0 cubic feet
Interior Dimensions
Front Head Room:
37.7 inches
Front Leg Room:
41 inches
Front Shoulder Room:
54.8 inches
Rear Head Room:
Not yet available
Rear Leg Room:
Not yet available
Rear Shoulder Room:
Not yet available
Cargo Space:
3.5 cubic feet
Overall Interior Volume:
Not yet available
Exterior Dimensions
Curb Weight:
3850 lbs
Width:
75.1 inches
Height:
49.3 inches
Length:
183.3 inches
Wheelbase:
106.3 inches
Ground Clearance:
Not yet available
Exterior Dimensions
Curb Weight:
3605 lbs
Width:
79.9 inches
Height:
49.3 inches
Length:
174.5 inches
Wheelbase:
104.3 inches
Ground Clearance:
Not yet available
Standard Wheel/Tire Information
Wheel Size:
Not yet available
Wheel Type:
Not yet available
Tire Size:
Not yet available
Standard Wheel/Tire Information
Wheel Size:
19.0 x 8.5 inches
Wheel Type:
aluminum alloy
Tire Size:
235/35R19
Exterior Colors
Beige
Coronadite Gray
Black
Galaxite Black / Picotite Black / Pure Black
Blue
Amazonite Blue / Covelline Blue / Digenite Blue
Brown
Cassiterite Black
Gray
Antimony Gray / Osminium Grey / Palladium Grey
Green
Fayalite Green
Silver
Laurite Silver
White
Alabaster White
Red
Not available
Exterior Colors
Beige
Not available
Black
Phantom Black Pearl Effect
Blue
Jet Blue Metallic / Mugello Blue Pearl Effect
Brown
Not available
Gray
Daytona Gray Pearl Effect
Green
Not available
Silver
Ice Silver Metallic
White
Ibis White
Red
Brilliant Red
Interior Colors
Beige
Beige / Copper / Pastel Yellow / Sand
Black
Black / Semi-Aniline Black
Blue
Dark Pacific Blue / Royal Blue
Brown
Light Brown / Tobacco Brown
Gray
Graphite Green
Green
Green
Red
300 SL Red
Silver
Silver
Interior Colors
Beige
Luxor Beige Fine Nappa leather seats
Black
Black Fine Nappa leather seats / Black leather/Alcantara seating surfaces
Blue
Not available
Brown
Tuscan Brown Fine Nappa leather seats
Gray
Limestone Gray Fine Nappa leather seats / Limestone Gray leather/Alcantara seating surfaces
Green
Not available
Red
Not available
Silver
Not available
