Car comparison

Audi RS6 Avant (C8) 4.0 TFSI V8vsMercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8

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

New comparison

Audi RS6 Avant (C8)

4.0 TFSI V8

600 hp3996 ccGasolineAWDAutomaticTwin-turboWagon / estate2019-2025
VS

Mercedes-Benz CLS Shooting Brake (X218)

AMG CLS 63 V8

557 hp5461 ccGasolineRWDAutomaticTwin-turboWagon / estate2013-2014

Comparison overview

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

Best choices

Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8

  • Lightest
    1,880 kg
    4,145 lb
  • Best power-to-weight
    296 hp/t
    221 kW/t
    3.4 kg/hp
  • Lowest combined fuel consumption
    10.1 L/100 km
    23.3 mpg US
    28.0 mpg UK
  • Lowest city consumption
    14.0 L/100 km
    16.8 mpg US
    20.2 mpg UK
  • Lowest highway consumption
    7.8 L/100 km
    30.2 mpg US
    36.2 mpg UK
  • Best estimated range
    653 km
    406 mi
  • Largest trunk
    590 L
  • Best economy score
    80/100

Audi RS6 Avant (C8) 4.0 TFSI V8

  • Quickest 0-100 km/h
    3.6 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    600 hp
    447 kW
  • Highest torque
    800 Nm
    590 lb-ft
  • Best overall score
    86/100
  • Best performance score
    85/100
  • Best practicality score
    87/100

Specification comparison

Specification comparison
ModelAudiRS6 Avant (C8)4.0 TFSI V8Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
Power
600hp447kW
557hp415kW
Torque
800Nm590lb-ft
720Nm531lb-ft
Curb weight
2,075kg4,575lb
1,880kg4,145lb
Gross weight
2,740kg6,041lb
2,530kg5,578lb
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
41.7s99% target: 257 km/h / 160 mph
Calculated
38.2s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
3.6s
4.3s
0-200 km/h
12.0s
12.6s
Calculated
0-60 mph
3.4s
Calculated
4.1s
Calculated
Fuel consumption
11.7L/100 km20.1mpg US24.1mpg UK
10.1L/100 km23.3mpg US28.0mpg UK
Fuel consumption city
16.2L/100 km14.5mpg US17.4mpg UK
14L/100 km16.8mpg US20.2mpg UK
Fuel consumption highway
8.9L/100 km26.4mpg US31.7mpg UK
7.8L/100 km30.2mpg US36.2mpg UK
Quarter mile
11.6s
Calculated
12.1s
Calculated
Power-to-weight
289hp/t216kW/t131hp/1000 lb
Calculated
296hp/t221kW/t134hp/1000 lb
Calculated
Torque-to-weight
386Nm/t258lb-ft/ton
Calculated
383Nm/t256lb-ft/ton
Calculated
Estimated range
624km388mi
Calculated
653km406mi
Calculated
Displacement
3,996cc244cu in
5,461cc333cu in
Length
4,939mm194in
4,956mm195in
Width
1,886mm74in
1,881mm74in
Height
1,467mm58in
1,416mm56in
Wheelbase
2,924mm115in
2,874mm113in
Front track
1,668mm66in
1,622mm64in
Rear track
1,650mm65in
1,605mm63in
Trunk volume
565L
590L
Max trunk volume
1,680L
1,550L
Doors
5
5
Seats
5
5
Fuel tank
73L
66L
CO2 emissions
268g/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 RS6 Avant (C8) 4.0 TFSI V8Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8PowerTorque
  • Audi RS6 Avant (C8) 4.0 TFSI V8: Power / Torque
  • Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AudiRS6 Avant (C8)4.0 TFSI V86,000-6,250 rpm2,050-4,500 rpm6,500 rpm
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V85,500 rpm1,750-5,250 rpm5,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAudiRS6 Avant (C8)4.0 TFSI V8Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.4 s
4.1 s
0-100 km/h
0-62 mph
3.6 s
4.3 s
0-200 km/h
0-124 mph
12.0 s
12.6 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
1.9 s
2.2 s
330 ft
101 m
5.0 s
5.5 s
1/8 mile
201 m
7.5 s
8.1 s
1000 ft
305 m
9.7 s
10.3 s
1/4 mile
402 m
11.6 s
12.1 s
Trap speed
1/4 mile
402 m
197 km/h
122 mph
197 km/h
122 mph

Power comparison

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

Chart data table
VehicleValue
AudiRS6 Avant (C8)4.0 TFSI V8
600 hp
447 kW
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
557 hp
415 kW

Audi RS6 Avant (C8) 4.0 TFSI V8 has 43 hp more than Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8.

The biggest power difference is between Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8 and Audi RS6 Avant (C8) 4.0 TFSI V8: 43 hp (32 kW).

Torque comparison

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

Chart data table
VehicleValue
AudiRS6 Avant (C8)4.0 TFSI V8
800 Nm
590 lb-ft
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
720 Nm
531 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AudiRS6 Avant (C8)4.0 TFSI V8
2,075 kg
4,575 lb
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
1,880 kg
4,145 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AudiRS6 Avant (C8)4.0 TFSI V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 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
AudiRS6 Avant (C8)4.0 TFSI V83.6 s
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V84.3 s

The biggest 0-100 km/h difference is between Audi RS6 Avant (C8) 4.0 TFSI V8 and Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8: 0.7 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AudiRS6 Avant (C8)4.0 TFSI V8
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
10.1 L/100 km
23.3 mpg US
28.0 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8 and Audi RS6 Avant (C8) 4.0 TFSI V8: 1.6 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
AudiRS6 Avant (C8)4.0 TFSI V8
289 hp/t
216 kW/t
3.5 kg/hp
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
296 hp/t
221 kW/t
3.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AudiRS6 Avant (C8)4.0 TFSI V8
624 km
388 mi
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
653 km
406 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AudiRS6 Avant (C8)4.0 TFSI V8
600 hp
447 kW
3.6 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
557 hp
415 kW
4.3 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
AudiRS6 Avant (C8)4.0 TFSI V8
Power
600 hp
447 kW
0-100 km/h3.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,939 mm
194.4 in
Height
1,467 mm
57.8 in
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
Power
557 hp
415 kW
0-100 km/h4.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
590 L
20.8 cu ft
Length
4,956 mm
195.1 in
Height
1,416 mm
55.7 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
AudiRS6 Avant (C8)4.0 TFSI V8
Power
600 hp
447 kW
0-100 km/h3.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
Power
557 hp
415 kW
0-100 km/h4.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.1 L/100 km
23.3 mpg US
28.0 mpg UK

Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 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
AudiRS6 Avant (C8)4.0 TFSI V8
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
3.6 s
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
4.3 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
AudiRS6 Avant (C8)4.0 TFSI V8
289 hp/t
216 kW/t
3.5 kg/hp
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
296 hp/t
221 kW/t
3.4 kg/hp
10.1 L/100 km
23.3 mpg US
28.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAudiRS6 Avant (C8)4.0 TFSI V8Mercedes-BenzCLS Shooting Brake (X218)AMG CLS 63 V8
Power
600 hp
447 kW
557 hp
415 kW
Torque
800 Nm
590 lb-ft
720 Nm
531 lb-ft
Acceleration
3.6 s
4.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
2,075 kg
4,575 lb
1,880 kg
4,145 lb
Fuel consumption
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,939 mm
194.4 in
Height
1,467 mm
57.8 in
Doors/seats
5 doors
5 seats
Trunk
590 L
20.8 cu ft
Length
4,956 mm
195.1 in
Height
1,416 mm
55.7 in
Range score
624 km
388 mi
653 km
406 mi
CO2 score
268 g/km
-
Trunk score
565 L
20.0 cu ft
590 L
20.8 cu ft
Power-to-weight score
289 hp/t
216 kW/t
3.5 kg/hp
296 hp/t
221 kW/t
3.4 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 RS6 Avant (C8) 4.0 TFSI V8Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8
Consumption11.7 L/100 km20.1 mpg US24.1 mpg UK10.1 L/100 km23.3 mpg US28 mpg UK
Cost / 100 km20.47 LC100 km17.68 LC100 km
Cost / 100 mi32.95 LC100 mi28.45 LC100 mi
Annual fuel used1,755 L464 US gal386 UK gal1,515 L400 US gal333 UK gal
Annual fuel cost3,071 LC/year2,651 LC/year

Head-to-head comparisons

Audi RS6 Avant (C8) 4.0 TFSI V8

  • Has 43 hp more
  • Has 80 Nm more
  • Is 0.7 s quicker from 0-100 km/h

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk

Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8

  • Is 195 kg lighter
  • Uses 1.6 L/100 km less fuel
  • Has 7 hp/t better power-to-weight
  • Has 30 km (18 mi) more estimated range
  • Has 25 L more trunk volume

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power

Choose cars to compare

Brand
Model
Generation
Engine or modification
Audi RS6 Avant (C8) 4.0 TFSI V8
Mercedes-Benz CLS Shooting Brake (X218) AMG CLS 63 V8
Compare selected cars
2 vehicles selected

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