Car comparison

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

350 hp4163 ccGasolineAWDAutomaticNaturally aspiratedSedan2007-2009
VS

Cadillac STS

4.6 i V8

325 hp4565 ccGasolineRWDAutomaticNaturally aspiratedSedan2004-2011

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 FSI V8

  • Quickest 0-100 km/h
    6.1 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    350 hp
    261 kW
  • Highest torque
    440 Nm
    325 lb-ft
  • Best power-to-weight
    194 hp/t
    145 kW/t
    5.1 kg/hp
  • Lowest combined fuel consumption
    10.9 L/100 km
    21.6 mpg US
    25.9 mpg UK
  • Lowest city consumption
    15.7 L/100 km
    15.0 mpg US
    18.0 mpg UK
  • Lowest highway consumption
    8.2 L/100 km
    28.7 mpg US
    34.4 mpg UK
  • Lowest CO2 emissions
    259 g/km
  • Best estimated range
    826 km
    513 mi
  • Largest trunk
    500 L
  • Best overall score
    70/100
  • Best performance score
    67/100
  • Best economy score
    78/100
  • Best practicality score
    76/100

Specification comparison

Specification comparison
ModelAUDIA8 (D3/4E)Facelift 20074.2 FSI V8CadillacSTS4.6 i V8
Power
350hp261kW
325hp242kW
Torque
440Nm325lb-ft
420Nm310lb-ft
Curb weight
1,800kg3,968lb
1,780kg3,924lb
Gross weight
2,400kg5,291lb
-
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
60.9s99% target: 262 km/h / 163 mph
Calculated
64.0s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
6.1s
6.2s
0-200 km/h
18.3s
Calculated
18.9s
Calculated
0-60 mph
5.8s
Calculated
5.9s
Calculated
Fuel consumption
10.9L/100 km21.6mpg US25.9mpg UK
14.4L/100 km16.3mpg US19.6mpg UK
Fuel consumption city
15.7L/100 km15mpg US18.0mpg UK
19.2L/100 km12.3mpg US14.7mpg UK
Fuel consumption highway
8.2L/100 km28.7mpg US34.4mpg UK
11.7L/100 km20.1mpg US24.1mpg UK
Quarter mile
14.0s
Calculated
14.1s
Calculated
Power-to-weight
194hp/t145kW/t88hp/1000 lb
Calculated
183hp/t136kW/t83hp/1000 lb
Calculated
Torque-to-weight
244Nm/t164lb-ft/ton
Calculated
236Nm/t158lb-ft/ton
Calculated
Estimated range
826km513mi
Calculated
458km285mi
Calculated
Displacement
4,163cc254cu 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
259g/km
343g/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 FSI V8Cadillac STS 4.6 i V8PowerTorque
  • AUDI A8 (D3/4E) Facelift 2007 4.2 FSI 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 FSI V86,800 rpm3,500 rpm7,050 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 FSI V8CadillacSTS4.6 i V8
Acceleration checkpoints
0-60 mph
0-97 km/h
5.8 s
5.9 s
0-100 km/h
0-62 mph
6.1 s
6.2 s
0-200 km/h
0-124 mph
18.3 s
18.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.6 s
2.6 s
330 ft
101 m
6.4 s
6.4 s
1/8 mile
201 m
9.4 s
9.5 s
1000 ft
305 m
11.9 s
12.0 s
1/4 mile
402 m
14.0 s
14.1 s
Trap speed
1/4 mile
402 m
175 km/h
109 mph
173 km/h
107 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8
350 hp
261 kW
CadillacSTS4.6 i V8
325 hp
242 kW

AUDI A8 (D3/4E) Facelift 2007 4.2 FSI V8 has 25 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 FSI V8: 25 hp (19 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8
440 Nm
325 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 FSI V8
1,800 kg
3,968 lb
CadillacSTS4.6 i V8
1,780 kg
3,924 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 FSI V8
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
CadillacSTS4.6 i 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
AUDIA8 (D3/4E)Facelift 20074.2 FSI V86.1 s
CadillacSTS4.6 i V86.2 s

The biggest 0-100 km/h difference is between AUDI A8 (D3/4E) Facelift 2007 4.2 FSI V8 and Cadillac STS 4.6 i 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
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
CadillacSTS4.6 i V8
14.4 L/100 km
16.3 mpg US
19.6 mpg UK

The biggest fuel consumption difference is between AUDI A8 (D3/4E) Facelift 2007 4.2 FSI V8 and Cadillac STS 4.6 i V8: 3.5 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 FSI V8
194 hp/t
145 kW/t
5.1 kg/hp
CadillacSTS4.6 i V8
183 hp/t
136 kW/t
5.5 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 FSI V8
826 km
513 mi
CadillacSTS4.6 i V8
458 km
285 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8
350 hp
261 kW
6.1 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
CadillacSTS4.6 i V8
325 hp
242 kW
6.2 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
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8
Power
350 hp
261 kW
0-100 km/h6.1 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/h6.2 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 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 FSI V8
Power
350 hp
261 kW
0-100 km/h6.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
CadillacSTS4.6 i V8
Power
325 hp
242 kW
0-100 km/h6.2 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
14.4 L/100 km
16.3 mpg US
19.6 mpg UK

AUDI A8 (D3/4E) Facelift 2007 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
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
6.1 s
CadillacSTS4.6 i V8
14.4 L/100 km
16.3 mpg US
19.6 mpg UK
6.2 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 FSI V8
194 hp/t
145 kW/t
5.1 kg/hp
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
CadillacSTS4.6 i V8
183 hp/t
136 kW/t
5.5 kg/hp
14.4 L/100 km
16.3 mpg US
19.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA8 (D3/4E)Facelift 20074.2 FSI V8CadillacSTS4.6 i V8
Power
350 hp
261 kW
325 hp
242 kW
Torque
440 Nm
325 lb-ft
420 Nm
310 lb-ft
Acceleration
6.1 s
6.2 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,800 kg
3,968 lb
1,780 kg
3,924 lb
Fuel consumption
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
14.4 L/100 km
16.3 mpg US
19.6 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
826 km
513 mi
458 km
285 mi
CO2 score
259 g/km
343 g/km
Trunk score
500 L
17.7 cu ft
464 L
16.4 cu ft
Power-to-weight score
194 hp/t
145 kW/t
5.1 kg/hp
183 hp/t
136 kW/t
5.5 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 FSI V8Cadillac STS 4.6 i V8
Consumption10.9 L/100 km21.6 mpg US25.9 mpg UK14.4 L/100 km16.3 mpg US19.6 mpg UK
Cost / 100 km19.08 LC100 km25.20 LC100 km
Cost / 100 mi30.70 LC100 mi40.56 LC100 mi
Annual fuel used1,635 L432 US gal360 UK gal2,160 L571 US gal475 UK gal
Annual fuel cost2,861 LC/year3,780 LC/year

Head-to-head comparisons

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

  • Has 25 hp more
  • Has 20 Nm more
  • Is 0.1 s quicker from 0-100 km/h
  • Uses 3.5 L/100 km less fuel
  • Has 12 hp/t better power-to-weight
  • Has 367 km (228 mi) more estimated range
  • Has 36 L more trunk volume
  • Emits 84 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 power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Heaviest

Cadillac STS 4.6 i V8

  • Is 20 kg lighter

Pros

  • Lightest

Cons

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

Choose cars to compare

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

Popular comparisons

4.2 FSI V8
4.2 FSI V8
VS
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8vsAUDIA8L (D3/4E)Facelift 20074.2 FSI V8
4.6 i V8
2.8 T V6
VS
CadillacSTS4.6 i V8vsCadillacBLS2.8 T V6
4.2 FSI V8
4.2 FSI V8
VS
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8vsAUDIA8L (D3/4E)Facelift 20054.2 FSI V8
4.6 i V8
4.2 BiTDI V8
VS
CadillacSTS4.6 i V8vsAUDIA8 (D3/4E)Facelift 20074.2 BiTDI V8
4.2 FSI V8
4.2 FSI V8
VS
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8vsAUDIA8 (D3/4E)Facelift 20054.2 FSI V8
4.2 FSI V8
4.2 BiTDI V8
VS
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8vsAUDIA8 (D4/4H)4.2 BiTDI V8
4.2 FSI V8
4.2 TDI V8
VS
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8vsAUDIA8L (D4/4H)4.2 TDI V8
4.2 FSI V8
4.2 V8 40V
VS
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8vsAUDIA8 (D3/4E)4.2 V8 40V
4.6 i V8
335i
VS
CadillacSTS4.6 i V8vsBMW3 Series Sedan (E90)335i
4.2 FSI V8
4.2 V8 40V
VS
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8vsAUDIA8 (D2/4D)Facelift 19984.2 V8 40V
4.6 i V8
745d
VS
CadillacSTS4.6 i V8vsBMW7 Series (E65)Facelift 2005745d
4.2 FSI V8
4.2 BiTDI V8 clean diesel
VS
AUDIA8 (D3/4E)Facelift 20074.2 FSI V8vsAUDIA8L (D4/4H)Facelift 20134.2 BiTDI V8 clean diesel
AUDI A8 (D3/4E) · Facelift 2007 4.2 FSI V8 vs Cadillac STS 4.6 i V8 - car comparison - FastVsFaster