Compare 2008 Mercedes-Benz SL Class vs 2008 Audi R8

2008 Mercedes-Benz SL Class
2008 Audi R8
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Select style
2-Door Roadster 5.5L V8
Style MPG City MPG Hwy Invoice MSRP
2-Door Roadster 5.5L V8 14 21 $88,629 $95,300
2-Door Roadster 5.5L AMG 12 17 $120,249 $129,300
2-Door Roadster 5.5L V12 11 18 $123,876 $133,200
2-Door Roadster 6.0L AMG 11 18 $174,096 $187,200
Select style
2-Door Coupe Manual quattro
Style MPG City MPG Hwy Invoice MSRP
2-Door Coupe Manual quattro 13 18 $101,370 $109,000
2-Door Coupe Automatic quattro 13 20 $109,740 $118,000
Pricing
Invoice Price
$88,629
$101,370
Manufacturer Suggested Retail Price
$95,300
$109,000
Monthly Payment Estimate
$1588 / month
$1817 / month
The Car Connection's Take
TCC Rating
8.4
8.4
TCC’s Bottom Line
Think of the 2008 Mercedes-Benz SL-Class as a big, luxurious grand tourer with a little bit of sportscar soul, and you're on the right track. The 2008 Audi R8 looks and sounds like an exotic, but it has the day-to-day livability and comfort of a grand-touring coupe.
TCC Likes
TCC Dislikes
Fuel Economy
City
14 mpg 13 mpg
Highway
21 mpg 18 mpg
Vehicle
EPA Classification
2 Seater Compact
Interior Dimensions
Front Leg Room (in)
42.9 - TBD -
Front Hip Room (in)
- TBD - - TBD -
Passenger Volume (ft³)
57.8 - TBD -
Front Head Room (in)
37.7 37.7
Front Shoulder Room (in)
54.0 52.4
Passenger Capacity
2 2
Exterior Dimensions
Track Width, Front (in)
61.4 64.3
Min Ground Clearance (in)
- TBD - - TBD -
Length, Overall (in)
178.5 174.5
Height, Overall (in)
51.0 49.3
Track Width, Rear (in)
60.5 62.8
Wheelbase (in)
100.8 104.3
Liftover Height (in)
- TBD - 31.1
Width, Max w/o mirrors (in)
80.0 75.0
Cargo Area Dimensions
Trunk Volume (ft³)
10.2 (7.2 w/top down) 3.5
Brakes
Rear Brake Rotor Diam x Thickness (in)
11.8 x - TBD - - TBD -
Brake Type
Power Pwr
Rear Drum Diam x Width (in)
NA NA
Disc - Front (Yes or )
Yes Yes
Front Brake Rotor Diam x Thickness (in)
13.0 x - TBD - - TBD -
Drum - Rear (Yes or )
NA NA
Brake ABS System
4-Wheel 4-wheel
Disc - Rear (Yes or )
Yes Yes
Fuel Tank
Fuel Tank Capacity, Approx (gal)
21.1 23.8
Steering
Steering Type
Pwr Rack-&-pinion Pwr Rack & Pinion
Lock to Lock Turns (Steering)
2.6 - TBD -
Turning Diameter - Wall to Wall (ft)
- TBD - - TBD -
Steering Ratio (:1), Overall
- TBD - 17.3
Turning Diameter - Curb to Curb (ft)
36.2 38.7
Tires
Spare Tire Order Code
NA NA
Rear Tire Size
P285/35R18 P285/35R18
Rear Tire Order Code
NA NA
Front Tire Size
P255/40R18 P235/40R18
Spare Tire Size
Compact NA
Front Tire Order Code
NA NA
Trailering
Dead Weight Hitch - Max Tongue Wt. (lbs)
- TBD - NA
Wt Distributing Hitch - Max Tongue Wt. (lbs)
NA NA
Dead Weight Hitch - Max Trailer Wt. (lbs)
- TBD - NA
Wt Distributing Hitch - Max Trailer Wt. (lbs)
NA NA
Weight Information
Base Curb Weight (lbs)
4220 3605
Wheels
Rear Wheel Size (in)
18 x 9.5 18 x 10.5
Front Wheel Material
Aluminum Alloy
Spare Wheel Material
- TBD - NA
Front Wheel Size (in)
18 x 8.5 18 x 8.5
Spare Wheel Size (in)
- TBD - NA
Rear Wheel Material
Aluminum Alloy
Cooling System
Total Cooling System Capacity (qts)
- TBD - 24.3
Electrical
Maximum Alternator Capacity (amps)
- TBD - 190
Cold Cranking Amps @ 0° F (Primary)
- TBD - 520
Engine
SAE Net Torque @ RPM
391 @ 2800-4800 317 @ 4500-6000
Engine Order Code
NA NA
Displacement
5.5L/333 4.2L/254
SAE Net Horsepower @ RPM
382 @ 6000 420 @ 7800
Engine Type
Gas V8 Gas V8
Fuel System
SMPI FSI Direct
Mileage
EPA Fuel Economy Est - Hwy (MPG)
21 18
EPA Fuel Economy Est - City (MPG)
14 13
Transmission
Sixth Gear Ratio (:1)
- TBD - 0.93
First Gear Ratio (:1)
- TBD - 4.37
Seventh Gear Ratio (:1)
- TBD - -
Clutch Size (in)
NA NA
Third Gear Ratio (:1)
- TBD - 1.88
Trans Type
7 6
Fifth Gear Ratio (:1)
- TBD - 1.13
Trans Description Cont. Again
NA NA
Drivetrain
Rear Wheel Drive All-Wheel Drive
Reverse Ratio (:1)
- TBD - 3.71
Second Gear Ratio (:1)
- TBD - 2.71
Trans Order Code
NA NA
Final Drive Axle Ratio (:1)
2.65 3.46
Fourth Gear Ratio (:1)
- TBD - 1.41
Trans Description Cont.
Automatic w/OD Manual
Summary
Body Style
2 Door Convertible 2 Door Coupe
Vehicle Name
Mercedes-Benz SL-Class Audi R8
Suspension
Suspension Type - Rear (Cont.)
Multi-link NA
Shock Absorber Diameter - Rear (mm)
- TBD - - TBD -
Suspension Type - Front
Independent 4-Link
Stabilizer Bar Diameter - Rear (in)
- TBD - - TBD -
Suspension Type - Front (Cont.)
4-Link NA
Shock Absorber Diameter - Front (mm)
- TBD - - TBD -
Stabilizer Bar Diameter - Front (in)
- TBD - - TBD -
Suspension Type - Rear
Independent 4-Link

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