Car comparison

AUDI RS6 Avant (C8) 4.0 TFSI V8vsMercedes-Benz CLS Shooting Brake (X218) · Facelift 2014 AMG CLS 63 S 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) · Facelift 2014

AMG CLS 63 S V8

585 hp5461 ccGasolineAWDAutomaticTwin-turboWagon / estate2014-2018

Comparison overview

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

Best choices

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 estimated range
    624 km
    388 mi
  • Largest trunk
    565 L
  • Best overall score
    86/100
  • Best practicality score
    87/100

Mercedes-Benz CLS Shooting Brake (X218) Facelift 2014 AMG CLS 63 S V8

  • Lightest
    1,950 kg
    4,299 lb
  • Best power-to-weight
    300 hp/t
    224 kW/t
    3.3 kg/hp
  • Lowest combined fuel consumption
    10.6 L/100 km
    22.2 mpg US
    26.6 mpg UK
  • Lowest city consumption
    14.4 L/100 km
    16.3 mpg US
    19.6 mpg UK
  • Lowest highway consumption
    8.4 L/100 km
    28.0 mpg US
    33.6 mpg UK
  • Lowest CO2 emissions
    248 g/km
  • Best performance score
    86/100
  • Best economy score
    78/100

Specification comparison

Specification comparison
ModelAUDIRS6 Avant (C8)4.0 TFSI V8Mercedes-BenzCLS Shooting Brake (X218)Facelift 2014AMG CLS 63 S V8
Power
600hp447kW
585hp436kW
Torque
800Nm590lb-ft
800Nm590lb-ft
Curb weight
2,075kg4,575lb
1,950kg4,299lb
Gross weight
2,740kg6,041lb
2,560kg5,644lb
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
32.3s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
3.6s
3.7s
0-200 km/h
12.0s
10.7s
Calculated
0-60 mph
3.4s
Calculated
3.5s
Calculated
Fuel consumption
11.7L/100 km20.1mpg US24.1mpg UK
10.6L/100 km22.2mpg US26.6mpg UK
Fuel consumption city
16.2L/100 km14.5mpg US17.4mpg UK
14.4L/100 km16.3mpg US19.6mpg UK
Fuel consumption highway
8.9L/100 km26.4mpg US31.7mpg UK
8.4L/100 km28mpg US33.6mpg UK
Quarter mile
11.6s
Calculated
11.4s
Calculated
Power-to-weight
289hp/t216kW/t131hp/1000 lb
Calculated
300hp/t224kW/t136hp/1000 lb
Calculated
Torque-to-weight
386Nm/t258lb-ft/ton
Calculated
410Nm/t275lb-ft/ton
Calculated
Estimated range
624km388mi
Calculated
623km387mi
Calculated
Displacement
3,996cc244cu in
5,461cc333cu in
Length
4,939mm194in
4,953mm195in
Width
1,886mm74in
1,881mm74in
Height
1,467mm58in
1,419mm56in
Wheelbase
2,924mm115in
2,874mm113in
Front track
1,668mm66in
1,596mm63in
Rear track
1,650mm65in
1,629mm64in
Trunk volume
565L
550L
Max trunk volume
1,680L
1,550L
Doors
5
5
Seats
5
5
Fuel tank
73L
66L
CO2 emissions
268g/km
248g/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) Facelift 2014 AMG CLS 63 S V8PowerTorque
  • AUDI RS6 Avant (C8) 4.0 TFSI V8: Power / Torque
  • Mercedes-Benz CLS Shooting Brake (X218) Facelift 2014 AMG CLS 63 S 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)Facelift 2014AMG CLS 63 S V85,500 rpm1,750-5,000 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)Facelift 2014AMG CLS 63 S V8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.4 s
3.5 s
0-100 km/h
0-62 mph
3.6 s
3.7 s
0-200 km/h
0-124 mph
12.0 s
10.7 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
Likely limited
Drag race simulation
60 ft
18 m
1.9 s
2.1 s
330 ft
101 m
5.0 s
5.1 s
1/8 mile
201 m
7.5 s
7.6 s
1000 ft
305 m
9.7 s
9.7 s
1/4 mile
402 m
11.6 s
11.4 s
Trap speed
1/4 mile
402 m
197 km/h
122 mph
206 km/h
128 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)Facelift 2014AMG CLS 63 S V8
585 hp
436 kW

AUDI RS6 Avant (C8) 4.0 TFSI V8 has 15 hp more than Mercedes-Benz CLS Shooting Brake (X218) Facelift 2014 AMG CLS 63 S V8.

The biggest power difference is between Mercedes-Benz CLS Shooting Brake (X218) Facelift 2014 AMG CLS 63 S V8 and AUDI RS6 Avant (C8) 4.0 TFSI V8: 15 hp (11 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)Facelift 2014AMG CLS 63 S V8
800 Nm
590 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)Facelift 2014AMG CLS 63 S V8
1,950 kg
4,299 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)Facelift 2014AMG CLS 63 S 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)Facelift 2014AMG CLS 63 S V83.7 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) Facelift 2014 AMG CLS 63 S V8: 0.1 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)Facelift 2014AMG CLS 63 S V8
10.6 L/100 km
22.2 mpg US
26.6 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz CLS Shooting Brake (X218) Facelift 2014 AMG CLS 63 S V8 and AUDI RS6 Avant (C8) 4.0 TFSI V8: 1.1 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)Facelift 2014AMG CLS 63 S V8
300 hp/t
224 kW/t
3.3 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)Facelift 2014AMG CLS 63 S V8
623 km
387 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)Facelift 2014AMG CLS 63 S V8
585 hp
436 kW
3.7 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)Facelift 2014AMG CLS 63 S V8
Power
585 hp
436 kW
0-100 km/h3.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
550 L
19.4 cu ft
Length
4,953 mm
195.0 in
Height
1,419 mm
55.9 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)Facelift 2014AMG CLS 63 S V8
Power
585 hp
436 kW
0-100 km/h3.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.6 L/100 km
22.2 mpg US
26.6 mpg UK

Mercedes-Benz CLS Shooting Brake (X218) Facelift 2014 AMG CLS 63 S 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)Facelift 2014AMG CLS 63 S V8
10.6 L/100 km
22.2 mpg US
26.6 mpg UK
3.7 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)Facelift 2014AMG CLS 63 S V8
300 hp/t
224 kW/t
3.3 kg/hp
10.6 L/100 km
22.2 mpg US
26.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIRS6 Avant (C8)4.0 TFSI V8Mercedes-BenzCLS Shooting Brake (X218)Facelift 2014AMG CLS 63 S V8
Power
600 hp
447 kW
585 hp
436 kW
Torque
800 Nm
590 lb-ft
800 Nm
590 lb-ft
Acceleration
3.6 s
3.7 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
1,950 kg
4,299 lb
Fuel consumption
11.7 L/100 km
20.1 mpg US
24.1 mpg UK
10.6 L/100 km
22.2 mpg US
26.6 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
550 L
19.4 cu ft
Length
4,953 mm
195.0 in
Height
1,419 mm
55.9 in
Range score
624 km
388 mi
623 km
387 mi
CO2 score
268 g/km
248 g/km
Trunk score
565 L
20.0 cu ft
550 L
19.4 cu ft
Power-to-weight score
289 hp/t
216 kW/t
3.5 kg/hp
300 hp/t
224 kW/t
3.3 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) Facelift 2014 AMG CLS 63 S V8
Consumption11.7 L/100 km20.1 mpg US24.1 mpg UK10.6 L/100 km22.2 mpg US26.6 mpg UK
Cost / 100 km20.47 LC100 km18.55 LC100 km
Cost / 100 mi32.95 LC100 mi29.85 LC100 mi
Annual fuel used1,755 L464 US gal386 UK gal1,590 L420 US gal350 UK gal
Annual fuel cost3,071 LC/year2,783 LC/year

Head-to-head comparisons

AUDI RS6 Avant (C8) 4.0 TFSI V8

  • Has 15 hp more
  • Is 0.1 s quicker from 0-100 km/h
  • Has 1 km (1 mi) more estimated range
  • Has 15 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Best estimated range
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

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 S V8
Compare selected cars
2 vehicles selected

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