Car comparison

AUDI RS4 Avant (B8) · Facelift 2011 4.2 FSI V8vsMercedes-Benz R-class (W251) AMG R 63 V8

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

AUDI RS4 Avant (B8) · Facelift 2011

4.2 FSI V8

450 hp4163 ccGasolineAWDAutomaticNaturally aspiratedWagon / estate2012-2015
VS

Mercedes-Benz R-class (W251)

AMG R 63 V8

510 hp6208 ccGasolineAWDAutomaticNaturally aspiratedWagon / estate2006-2007

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8

  • Quickest 0-100 km/h
    4.7 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Lightest
    1,795 kg
    3,957 lb
  • Best power-to-weight
    251 hp/t
    187 kW/t
    4.0 kg/hp
  • Lowest combined fuel consumption
    10.7 L/100 km
    22.0 mpg US
    26.4 mpg UK
  • Lowest city consumption
    14.6 L/100 km
    16.1 mpg US
    19.3 mpg UK
  • Lowest highway consumption
    8.5 L/100 km
    27.7 mpg US
    33.2 mpg UK
  • Best estimated range
    570 km
    354 mi
  • Largest trunk
    490 L
  • Best economy score
    78/100
  • Best practicality score
    83/100

Specification comparison

Specification comparison
ModelAUDIRS4 Avant (B8)Facelift 20114.2 FSI V8Mercedes-BenzR-class (W251)AMG R 63 V8
Power
450hp336kW
510hp380kW
Torque
430Nm317lb-ft
630Nm465lb-ft
Curb weight
1,795kg3,957lb
2,330kg5,137lb
Gross weight
2,345kg5,170lb
2,900kg6,393lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
45.8s99% target: 257 km/h / 160 mph
Calculated
55.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.7s
5.0s
0-200 km/h
14.4s
Calculated
16.3s
Calculated
0-60 mph
4.5s
Calculated
4.8s
Calculated
Fuel consumption
10.7L/100 km22mpg US26.4mpg UK
16.3L/100 km14.4mpg US17.3mpg UK
Fuel consumption city
14.6L/100 km16.1mpg US19.3mpg UK
24.1L/100 km9.8mpg US11.7mpg UK
Fuel consumption highway
8.5L/100 km27.7mpg US33.2mpg UK
11.8L/100 km19.9mpg US23.9mpg UK
Quarter mile
12.6s
Calculated
13.0s
Calculated
Power-to-weight
251hp/t187kW/t114hp/1000 lb
Calculated
219hp/t163kW/t99hp/1000 lb
Calculated
Torque-to-weight
240Nm/t160lb-ft/ton
Calculated
270Nm/t181lb-ft/ton
Calculated
Estimated range
570km354mi
Calculated
491km305mi
Calculated
Displacement
4,163cc254cu in
6,208cc379cu in
Length
4,719mm186in
4,930mm194in
Width
1,850mm73in
1,922mm76in
Height
1,416mm56in
1,634mm64in
Wheelbase
2,813mm111in
2,980mm117in
Front track
1,599mm63in
1,665mm66in
Rear track
1,586mm62in
1,652mm65in
Trunk volume
490L
433L
Max trunk volume
1,430L
2,407L
Doors
5
5
Seats
5
6
Fuel tank
61L
80L
CO2 emissions
249g/km
-

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8Mercedes-Benz R-class (W251) AMG R 63 V8PowerTorque
  • AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8: Power / Torque
  • Mercedes-Benz R-class (W251) AMG R 63 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V88,250 rpm4,000-6,000 rpm8,500 rpm
Mercedes-BenzR-class (W251)AMG R 63 V86,800 rpm5,200 rpm7,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIRS4 Avant (B8)Facelift 20114.2 FSI V8Mercedes-BenzR-class (W251)AMG R 63 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.5 s
4.8 s
0-100 km/h
0-62 mph
4.7 s
5.0 s
0-200 km/h
0-124 mph
14.4 s
16.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.3 s
2.3 s
330 ft
101 m
5.7 s
5.8 s
1/8 mile
201 m
8.4 s
8.6 s
1000 ft
305 m
10.7 s
11.0 s
1/4 mile
402 m
12.6 s
13.0 s
Trap speed
1/4 mile
402 m
188 km/h
117 mph
181 km/h
112 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
450 hp
336 kW
Mercedes-BenzR-class (W251)AMG R 63 V8
510 hp
380 kW

Mercedes-Benz R-class (W251) AMG R 63 V8 has 60 hp more than AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8.

The biggest power difference is between AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8 and Mercedes-Benz R-class (W251) AMG R 63 V8: 60 hp (45 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
430 Nm
317 lb-ft
Mercedes-BenzR-class (W251)AMG R 63 V8
630 Nm
465 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
1,795 kg
3,957 lb
Mercedes-BenzR-class (W251)AMG R 63 V8
2,330 kg
5,137 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzR-class (W251)AMG R 63 V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V84.7 s
Mercedes-BenzR-class (W251)AMG R 63 V85.0 s

Although Mercedes-Benz R-class (W251) AMG R 63 V8 has more power, AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8 and Mercedes-Benz R-class (W251) AMG R 63 V8: 0.3 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
Mercedes-BenzR-class (W251)AMG R 63 V8
16.3 L/100 km
14.4 mpg US
17.3 mpg UK

The biggest fuel consumption difference is between AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8 and Mercedes-Benz R-class (W251) AMG R 63 V8: 5.6 L/100 km.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
251 hp/t
187 kW/t
4.0 kg/hp
Mercedes-BenzR-class (W251)AMG R 63 V8
219 hp/t
163 kW/t
4.6 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
570 km
354 mi
Mercedes-BenzR-class (W251)AMG R 63 V8
491 km
305 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
450 hp
336 kW
4.7 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzR-class (W251)AMG R 63 V8
510 hp
380 kW
5.0 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
Power
450 hp
336 kW
0-100 km/h4.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
490 L
17.3 cu ft
Length
4,719 mm
185.8 in
Height
1,416 mm
55.7 in
Mercedes-BenzR-class (W251)AMG R 63 V8
Power
510 hp
380 kW
0-100 km/h5.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
6 seats
Trunk
433 L
15.3 cu ft
Length
4,930 mm
194.1 in
Height
1,634 mm
64.3 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
Power
450 hp
336 kW
0-100 km/h4.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
Mercedes-BenzR-class (W251)AMG R 63 V8
Power
510 hp
380 kW
0-100 km/h5.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
16.3 L/100 km
14.4 mpg US
17.3 mpg UK

AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8 is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
4.7 s
Mercedes-BenzR-class (W251)AMG R 63 V8
16.3 L/100 km
14.4 mpg US
17.3 mpg UK
5.0 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
AUDIRS4 Avant (B8)Facelift 20114.2 FSI V8
251 hp/t
187 kW/t
4.0 kg/hp
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
Mercedes-BenzR-class (W251)AMG R 63 V8
219 hp/t
163 kW/t
4.6 kg/hp
16.3 L/100 km
14.4 mpg US
17.3 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIRS4 Avant (B8)Facelift 20114.2 FSI V8Mercedes-BenzR-class (W251)AMG R 63 V8
Power
450 hp
336 kW
510 hp
380 kW
Torque
430 Nm
317 lb-ft
630 Nm
465 lb-ft
Acceleration
4.7 s
5.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,795 kg
3,957 lb
2,330 kg
5,137 lb
Fuel consumption
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
16.3 L/100 km
14.4 mpg US
17.3 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
490 L
17.3 cu ft
Length
4,719 mm
185.8 in
Height
1,416 mm
55.7 in
Doors/seats
5 doors
6 seats
Trunk
433 L
15.3 cu ft
Length
4,930 mm
194.1 in
Height
1,634 mm
64.3 in
Range score
570 km
354 mi
491 km
305 mi
CO2 score
249 g/km
-
Trunk score
490 L
17.3 cu ft
433 L
15.3 cu ft
Power-to-weight score
251 hp/t
187 kW/t
4.0 kg/hp
219 hp/t
163 kW/t
4.6 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehicleAUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8Mercedes-Benz R-class (W251) AMG R 63 V8
Consumption10.7 L/100 km22 mpg US26.4 mpg UK16.3 L/100 km14.4 mpg US17.3 mpg UK
Cost / 100 km18.72 LC100 km28.53 LC100 km
Cost / 100 mi30.13 LC100 mi45.91 LC100 mi
Annual fuel used1,605 L424 US gal353 UK gal2,445 L646 US gal538 UK gal
Annual fuel cost2,809 LC/year4,279 LC/year

Head-to-head comparisons

AUDI RS4 Avant (B8) Facelift 2011 4.2 FSI V8

  • Is 535 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Uses 5.6 L/100 km less fuel
  • Has 32 hp/t better power-to-weight
  • Has 79 km (49 mi) more estimated range
  • Has 57 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Lowest power

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI RS4 Avant (B8) 4.2 FSI V8
Mercedes-Benz R-class (W251) AMG R 63 V8
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2 vehicles selected

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