Car comparison

AUDI A8 (D3/4E) · Facelift 2007 4.2 BiTDI V8vsCadillac STS 4.6 i V8

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

New comparison

AUDI A8 (D3/4E) · Facelift 2007

4.2 BiTDI V8

326 hp4134 ccDieselAWDAutomaticTwin-turboSedan2007-2009
VS

Cadillac STS

4.6 i V8

325 hp4565 ccGasolineAWDAutomaticNaturally aspiratedSedan2006-2011

Comparison overview

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

Best choices

AUDI A8 (D3/4E) Facelift 2007 4.2 BiTDI V8

  • Quickest 0-100 km/h
    5.9 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    326 hp
    243 kW
  • Highest torque
    650 Nm
    479 lb-ft
  • Lowest combined fuel consumption
    9.4 L/100 km
    25.0 mpg US
    30.1 mpg UK
  • Lowest city consumption
    13.3 L/100 km
    17.7 mpg US
    21.2 mpg UK
  • Lowest highway consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest CO2 emissions
    249 g/km
  • Best estimated range
    957 km
    595 mi
  • Largest trunk
    500 L
  • Best overall score
    72/100
  • Best performance score
    70/100
  • Best economy score
    82/100
  • Best practicality score
    76/100

Specification comparison

Specification comparison
ModelAUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8CadillacSTS4.6 i V8
Power
326hp243kW
325hp242kW
Torque
650Nm479lb-ft
420Nm310lb-ft
Curb weight
1,945kg4,288lb
1,920kg4,233lb
Gross weight
2,545kg5,611lb
-
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
248 km/h
154 mph
To 99% top speed
61.9s99% target: 262 km/h / 163 mph
Calculated
64.9s99% target: 246 km/h / 153 mph
Calculated
0-100 km/h
5.9s
6.7s
0-200 km/h
18.2s
Calculated
22.3s
Calculated
0-60 mph
5.6s
Calculated
6.4s
Calculated
Fuel consumption
9.4L/100 km25mpg US30.1mpg UK
14.1L/100 km16.7mpg US20.0mpg UK
Fuel consumption city
13.3L/100 km17.7mpg US21.2mpg UK
19.7L/100 km11.9mpg US14.3mpg UK
Fuel consumption highway
7.2L/100 km32.7mpg US39.2mpg UK
10.9L/100 km21.6mpg US25.9mpg UK
Quarter mile
13.8s
Calculated
14.6s
Calculated
Power-to-weight
168hp/t125kW/t76hp/1000 lb
Calculated
169hp/t126kW/t77hp/1000 lb
Calculated
Torque-to-weight
334Nm/t224lb-ft/ton
Calculated
219Nm/t146lb-ft/ton
Calculated
Estimated range
957km595mi
Calculated
468km291mi
Calculated
Displacement
4,134cc252cu in
4,565cc279cu in
Length
5,062mm199in
4,985mm196in
Width
1,894mm75in
1,843mm73in
Height
1,444mm57in
1,464mm58in
Wheelbase
2,944mm116in
2,957mm116in
Front track
1,629mm64in
1,596mm63in
Rear track
1,615mm64in
1,581mm62in
Trunk volume
500L
464L
Doors
4
4
Seats
5
5
Fuel tank
90L
66L
CO2 emissions
249g/km
336g/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 A8 (D3/4E) Facelift 2007 4.2 BiTDI V8Cadillac STS 4.6 i V8PowerTorque
  • AUDI A8 (D3/4E) Facelift 2007 4.2 BiTDI V8: Power / Torque
  • Cadillac STS 4.6 i V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V83,750 rpm1,600-3,500 rpm4,000 rpm
CadillacSTS4.6 i V86,400 rpm4,400 rpm6,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8CadillacSTS4.6 i V8
Acceleration checkpoints
0-60 mph
0-97 km/h
5.6 s
6.4 s
0-100 km/h
0-62 mph
5.9 s
6.7 s
0-200 km/h
0-124 mph
18.2 s
22.3 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
248 km/h
154 mph
Drag race simulation
60 ft
18 m
2.5 s
2.6 s
330 ft
101 m
6.3 s
6.6 s
1/8 mile
201 m
9.2 s
9.8 s
1000 ft
305 m
11.8 s
12.4 s
1/4 mile
402 m
13.8 s
14.6 s
Trap speed
1/4 mile
402 m
175 km/h
109 mph
165 km/h
103 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
326 hp
243 kW
CadillacSTS4.6 i V8
325 hp
242 kW

AUDI A8 (D3/4E) Facelift 2007 4.2 BiTDI V8 has 1 hp more than Cadillac STS 4.6 i V8.

The biggest power difference is between Cadillac STS 4.6 i V8 and AUDI A8 (D3/4E) Facelift 2007 4.2 BiTDI V8: 1 hp (1 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
650 Nm
479 lb-ft
CadillacSTS4.6 i V8
420 Nm
310 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
1,945 kg
4,288 lb
CadillacSTS4.6 i V8
1,920 kg
4,233 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
CadillacSTS4.6 i V8
248 km/h
154 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V85.9 s
CadillacSTS4.6 i V86.7 s

The biggest 0-100 km/h difference is between AUDI A8 (D3/4E) Facelift 2007 4.2 BiTDI V8 and Cadillac STS 4.6 i V8: 0.8 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
CadillacSTS4.6 i V8
14.1 L/100 km
16.7 mpg US
20.0 mpg UK

The biggest fuel consumption difference is between AUDI A8 (D3/4E) Facelift 2007 4.2 BiTDI V8 and Cadillac STS 4.6 i V8: 4.7 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
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
168 hp/t
125 kW/t
6.0 kg/hp
CadillacSTS4.6 i V8
169 hp/t
126 kW/t
5.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
957 km
595 mi
CadillacSTS4.6 i V8
468 km
291 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
326 hp
243 kW
5.9 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
CadillacSTS4.6 i V8
325 hp
242 kW
6.7 s
248 km/h
154 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
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
Power
326 hp
243 kW
0-100 km/h5.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
500 L
17.7 cu ft
Length
5,062 mm
199.3 in
Height
1,444 mm
56.9 in
CadillacSTS4.6 i V8
Power
325 hp
242 kW
0-100 km/h6.7 s
Top speed
248 km/h
154 mph
Doors/seats
4 doors
5 seats
Trunk
464 L
16.4 cu ft
Length
4,985 mm
196.3 in
Height
1,464 mm
57.6 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
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
Power
326 hp
243 kW
0-100 km/h5.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
CadillacSTS4.6 i V8
Power
325 hp
242 kW
0-100 km/h6.7 s
Top speed
248 km/h
154 mph
14.1 L/100 km
16.7 mpg US
20.0 mpg UK

AUDI A8 (D3/4E) Facelift 2007 4.2 BiTDI 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
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
5.9 s
CadillacSTS4.6 i V8
14.1 L/100 km
16.7 mpg US
20.0 mpg UK
6.7 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
AUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
168 hp/t
125 kW/t
6.0 kg/hp
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
CadillacSTS4.6 i V8
169 hp/t
126 kW/t
5.9 kg/hp
14.1 L/100 km
16.7 mpg US
20.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8CadillacSTS4.6 i V8
Power
326 hp
243 kW
325 hp
242 kW
Torque
650 Nm
479 lb-ft
420 Nm
310 lb-ft
Acceleration
5.9 s
6.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
248 km/h
154 mph
Lightness
1,945 kg
4,288 lb
1,920 kg
4,233 lb
Fuel consumption
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
14.1 L/100 km
16.7 mpg US
20.0 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
500 L
17.7 cu ft
Length
5,062 mm
199.3 in
Height
1,444 mm
56.9 in
Doors/seats
4 doors
5 seats
Trunk
464 L
16.4 cu ft
Length
4,985 mm
196.3 in
Height
1,464 mm
57.6 in
Range score
957 km
595 mi
468 km
291 mi
CO2 score
249 g/km
336 g/km
Trunk score
500 L
17.7 cu ft
464 L
16.4 cu ft
Power-to-weight score
168 hp/t
125 kW/t
6.0 kg/hp
169 hp/t
126 kW/t
5.9 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 A8 (D3/4E) Facelift 2007 4.2 BiTDI V8Cadillac STS 4.6 i V8
Consumption9.4 L/100 km25 mpg US30.1 mpg UK14.1 L/100 km16.7 mpg US20 mpg UK
Cost / 100 km16.45 LC100 km24.68 LC100 km
Cost / 100 mi26.47 LC100 mi39.71 LC100 mi
Annual fuel used1,410 L372 US gal310 UK gal2,115 L559 US gal465 UK gal
Annual fuel cost2,468 LC/year3,701 LC/year

Head-to-head comparisons

AUDI A8 (D3/4E) Facelift 2007 4.2 BiTDI V8

  • Has 1 hp more
  • Has 230 Nm more
  • Is 0.8 s quicker from 0-100 km/h
  • Has 17 km/h (11 mph) higher top speed
  • Uses 4.7 L/100 km less fuel
  • Has 489 km (304 mi) more estimated range
  • Has 36 L more trunk volume
  • Emits 87 g/km less CO2

Pros

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

Cons

  • Heaviest

Cadillac STS 4.6 i V8

  • Is 25 kg lighter
  • Has 2 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A8 (D3/4E) 4.2 BiTDI V8
Cadillac STS 4.6 i V8
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2 vehicles selected

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AUDI A8 (D3/4E) · Facelift 2007 4.2 BiTDI V8 vs Cadillac STS 4.6 i V8 - car comparison - FastVsFaster