Car comparison

Bentley Arnage T 6.8i V8 BiturbovsMercedes-Benz S-class (W221) AMG S 63 V8

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

New comparison

Bentley Arnage T

6.8i V8 Biturbo

507 hp6761 ccGasolineRWDAutomaticTwin-turboSedan2006-2009
VS

Mercedes-Benz S-class (W221)

AMG S 63 V8

525 hp6208 ccGasolineRWDAutomaticNaturally aspiratedSedan2006-2009

Comparison overview

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

Best choices

Mercedes-Benz S-class (W221) AMG S 63 V8

  • Quickest 0-100 km/h
    4.6 s
  • Most powerful
    525 hp
    391 kW
  • Lightest
    1,995 kg
    4,398 lb
  • Best power-to-weight
    263 hp/t
    196 kW/t
    3.8 kg/hp
  • Lowest combined fuel consumption
    14.9 L/100 km
    15.8 mpg US
    19.0 mpg UK
  • Lowest city consumption
    23.2 L/100 km
    10.1 mpg US
    12.2 mpg UK
  • Lowest highway consumption
    10.2 L/100 km
    23.1 mpg US
    27.7 mpg UK
  • Lowest CO2 emissions
    355 g/km
  • Best estimated range
    604 km
    375 mi
  • Largest trunk
    560 L
  • Best performance score
    82/100
  • Best economy score
    67/100

Specification comparison

Specification comparison
ModelBentleyArnage T6.8i V8 BiturboMercedes-BenzS-class (W221)AMG S 63 V8
Power
507hp378kW
525hp391kW
Torque
1,000Nm738lb-ft
630Nm465lb-ft
Curb weight
2,585kg5,699lb
1,995kg4,398lb
Gross weight
3,065kg6,757lb
2,595kg5,721lb
Top speed
288 km/h
179 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
67.5s99% target: 285 km/h / 177 mph
Calculated
41.7s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
5.5s
4.6s
0-200 km/h
16.2s
Calculated
13.2s
Calculated
0-60 mph
5.3s
Calculated
4.4s
Calculated
Fuel consumption
19.5L/100 km12.1mpg US14.5mpg UK
14.9L/100 km15.8mpg US19.0mpg UK
Fuel consumption city
28.8L/100 km8.2mpg US9.8mpg UK
23.2L/100 km10.1mpg US12.2mpg UK
Fuel consumption highway
14.1L/100 km16.7mpg US20.0mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
Quarter mile
13.4s
Calculated
12.4s
Calculated
Power-to-weight
196hp/t146kW/t89hp/1000 lb
Calculated
263hp/t196kW/t119hp/1000 lb
Calculated
Torque-to-weight
387Nm/t259lb-ft/ton
Calculated
316Nm/t211lb-ft/ton
Calculated
Estimated range
492km306mi
Calculated
604km375mi
Calculated
Displacement
6,761cc413cu in
6,208cc379cu in
Length
5,400mm213in
5,079mm200in
Width
1,900mm75in
1,872mm74in
Height
1,515mm60in
1,473mm58in
Wheelbase
3,116mm123in
3,035mm119in
Front track
1,602mm63in
1,604mm63in
Rear track
1,602mm63in
1,606mm63in
Max trunk volume
374L
560L
Doors
4
4
Seats
5
4
Fuel tank
96L
90L
CO2 emissions
465g/km
355g/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.

Bentley Arnage T 6.8i V8 BiturboMercedes-Benz S-class (W221) AMG S 63 V8PowerTorque
  • Bentley Arnage T 6.8i V8 Biturbo: Power / Torque
  • Mercedes-Benz S-class (W221) AMG S 63 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BentleyArnage T6.8i V8 Biturbo4,200 rpm3,200 rpm4,450 rpm
Mercedes-BenzS-class (W221)AMG S 63 V86,800 rpm5,200 rpm7,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBentleyArnage T6.8i V8 BiturboMercedes-BenzS-class (W221)AMG S 63 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
5.3 s
4.4 s
0-100 km/h
0-62 mph
5.5 s
4.6 s
0-200 km/h
0-124 mph
16.2 s
13.2 s
Top speed
288 km/h
179 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.4 s
2.3 s
330 ft
101 m
6.1 s
5.7 s
1/8 mile
201 m
9.0 s
8.3 s
1000 ft
305 m
11.4 s
10.6 s
1/4 mile
402 m
13.4 s
12.4 s
Trap speed
1/4 mile
402 m
181 km/h
113 mph
194 km/h
121 mph

Power comparison

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

Chart data table
VehicleValue
BentleyArnage T6.8i V8 Biturbo
507 hp
378 kW
Mercedes-BenzS-class (W221)AMG S 63 V8
525 hp
391 kW

Mercedes-Benz S-class (W221) AMG S 63 V8 has 18 hp more than Bentley Arnage T 6.8i V8 Biturbo.

The biggest power difference is between Bentley Arnage T 6.8i V8 Biturbo and Mercedes-Benz S-class (W221) AMG S 63 V8: 18 hp (13 kW).

Torque comparison

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

Chart data table
VehicleValue
BentleyArnage T6.8i V8 Biturbo
1,000 Nm
738 lb-ft
Mercedes-BenzS-class (W221)AMG S 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
BentleyArnage T6.8i V8 Biturbo
2,585 kg
5,699 lb
Mercedes-BenzS-class (W221)AMG S 63 V8
1,995 kg
4,398 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
BentleyArnage T6.8i V8 Biturbo
288 km/h
179 mph
Mercedes-BenzS-class (W221)AMG S 63 V8
Unrestricted
265 km/h165 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
BentleyArnage T6.8i V8 Biturbo5.5 s
Mercedes-BenzS-class (W221)AMG S 63 V84.6 s

The biggest 0-100 km/h difference is between Mercedes-Benz S-class (W221) AMG S 63 V8 and Bentley Arnage T 6.8i V8 Biturbo: 0.9 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
BentleyArnage T6.8i V8 Biturbo
19.5 L/100 km
12.1 mpg US
14.5 mpg UK
Mercedes-BenzS-class (W221)AMG S 63 V8
14.9 L/100 km
15.8 mpg US
19.0 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz S-class (W221) AMG S 63 V8 and Bentley Arnage T 6.8i V8 Biturbo: 4.6 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
BentleyArnage T6.8i V8 Biturbo
196 hp/t
146 kW/t
5.1 kg/hp
Mercedes-BenzS-class (W221)AMG S 63 V8
263 hp/t
196 kW/t
3.8 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BentleyArnage T6.8i V8 Biturbo
492 km
306 mi
Mercedes-BenzS-class (W221)AMG S 63 V8
604 km
375 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BentleyArnage T6.8i V8 Biturbo
507 hp
378 kW
5.5 s
288 km/h
179 mph
Mercedes-BenzS-class (W221)AMG S 63 V8
525 hp
391 kW
4.6 s
Unrestricted
265 km/h165 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
BentleyArnage T6.8i V8 Biturbo
Power
507 hp
378 kW
0-100 km/h5.5 s
Top speed
288 km/h
179 mph
Doors/seats
4 doors
5 seats
Trunk
374 L
13.2 cu ft
Length
5,400 mm
212.6 in
Height
1,515 mm
59.6 in
Mercedes-BenzS-class (W221)AMG S 63 V8
Power
525 hp
391 kW
0-100 km/h4.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
4 seats
Trunk
560 L
19.8 cu ft
Length
5,079 mm
200.0 in
Height
1,473 mm
58.0 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
BentleyArnage T6.8i V8 Biturbo
Power
507 hp
378 kW
0-100 km/h5.5 s
Top speed
288 km/h
179 mph
19.5 L/100 km
12.1 mpg US
14.5 mpg UK
Mercedes-BenzS-class (W221)AMG S 63 V8
Power
525 hp
391 kW
0-100 km/h4.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
14.9 L/100 km
15.8 mpg US
19.0 mpg UK

Mercedes-Benz S-class (W221) AMG S 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
BentleyArnage T6.8i V8 Biturbo
19.5 L/100 km
12.1 mpg US
14.5 mpg UK
5.5 s
Mercedes-BenzS-class (W221)AMG S 63 V8
14.9 L/100 km
15.8 mpg US
19.0 mpg UK
4.6 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
BentleyArnage T6.8i V8 Biturbo
196 hp/t
146 kW/t
5.1 kg/hp
19.5 L/100 km
12.1 mpg US
14.5 mpg UK
Mercedes-BenzS-class (W221)AMG S 63 V8
263 hp/t
196 kW/t
3.8 kg/hp
14.9 L/100 km
15.8 mpg US
19.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBentleyArnage T6.8i V8 BiturboMercedes-BenzS-class (W221)AMG S 63 V8
Power
507 hp
378 kW
525 hp
391 kW
Torque
1,000 Nm
738 lb-ft
630 Nm
465 lb-ft
Acceleration
5.5 s
4.6 s
Top speed
288 km/h
179 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
2,585 kg
5,699 lb
1,995 kg
4,398 lb
Fuel consumption
19.5 L/100 km
12.1 mpg US
14.5 mpg UK
14.9 L/100 km
15.8 mpg US
19.0 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
374 L
13.2 cu ft
Length
5,400 mm
212.6 in
Height
1,515 mm
59.6 in
Doors/seats
4 doors
4 seats
Trunk
560 L
19.8 cu ft
Length
5,079 mm
200.0 in
Height
1,473 mm
58.0 in
Range score
492 km
306 mi
604 km
375 mi
CO2 score
465 g/km
355 g/km
Trunk score
374 L
13.2 cu ft
560 L
19.8 cu ft
Power-to-weight score
196 hp/t
146 kW/t
5.1 kg/hp
263 hp/t
196 kW/t
3.8 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
VehicleBentley Arnage T 6.8i V8 BiturboMercedes-Benz S-class (W221) AMG S 63 V8
Consumption19.5 L/100 km12.1 mpg US14.5 mpg UK14.9 L/100 km15.8 mpg US19 mpg UK
Cost / 100 km34.13 LC100 km26.08 LC100 km
Cost / 100 mi54.92 LC100 mi41.96 LC100 mi
Annual fuel used2,925 L773 US gal643 UK gal2,235 L590 US gal492 UK gal
Annual fuel cost5,119 LC/year3,911 LC/year

Head-to-head comparisons

Bentley Arnage T 6.8i V8 Biturbo

  • Has 370 Nm more
  • Has 23 km/h (14 mph) higher top speed

Pros

  • Highest top speed
  • Highest torque

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk
  • Highest CO2 emissions

Mercedes-Benz S-class (W221) AMG S 63 V8

  • Has 18 hp more
  • Is 590 kg lighter
  • Is 0.9 s quicker from 0-100 km/h
  • Uses 4.6 L/100 km less fuel
  • Has 67 hp/t better power-to-weight
  • Has 112 km (69 mi) more estimated range
  • Has 186 L more trunk volume
  • Emits 110 g/km less CO2

Pros

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

Cons

  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Bentley Arnage T 6.8i V8 Biturbo
Mercedes-Benz S-class (W221) AMG S 63 V8
Compare selected cars
2 vehicles selected

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