Car comparison

AUDI A6 (4F/C6) 3.2 FSI V6vsCadillac STS 3.6 i V6

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

New comparison

AUDI A6 (4F/C6)

3.2 FSI V6

255 hp3123 ccGasolineAWDManualNaturally aspiratedSedan2004-2008
VS

Cadillac STS

3.6 i V6

258 hp3564 ccGasolineRWDAutomaticNaturally aspiratedSedan2004-2011

Comparison overview

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

Best choices

AUDI A6 (4F/C6) 3.2 FSI V6

  • Quickest 0-100 km/h
    6.8 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Lightest
    1,640 kg
    3,616 lb
  • Best power-to-weight
    155 hp/t
    116 kW/t
    6.4 kg/hp
  • Lowest combined fuel consumption
    10.9 L/100 km
    21.6 mpg US
    25.9 mpg UK
  • Lowest city consumption
    16.5 L/100 km
    14.3 mpg US
    17.1 mpg UK
  • Lowest highway consumption
    7.7 L/100 km
    30.5 mpg US
    36.7 mpg UK
  • Lowest CO2 emissions
    262 g/km
  • Best estimated range
    734 km
    456 mi
  • Largest trunk
    546 L
  • Best overall score
    64/100
  • Best performance score
    58/100
  • Best economy score
    78/100
  • Best practicality score
    78/100

Specification comparison

Specification comparison
ModelAUDIA6 (4F/C6)3.2 FSI V6CadillacSTS3.6 i V6
Power
255hp190kW
258hp192kW
Torque
330Nm243lb-ft
346Nm255lb-ft
Curb weight
1,640kg3,616lb
1,782kg3,929lb
Gross weight
2,220kg4,894lb
-
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
229 km/h
142 mph
To 99% top speed
70.8s99% target: 257 km/h / 160 mph
Calculated
66.2s99% target: 227 km/h / 141 mph
Calculated
0-100 km/h
6.8s
7.4s
0-200 km/h
21.5s
Calculated
28.5s
Calculated
0-60 mph
6.5s
Calculated
7.0s
Calculated
Fuel consumption
10.9L/100 km21.6mpg US25.9mpg UK
12.2L/100 km19.3mpg US23.2mpg UK
Fuel consumption city
16.5L/100 km14.3mpg US17.1mpg UK
18.1L/100 km13mpg US15.6mpg UK
Fuel consumption highway
7.7L/100 km30.5mpg US36.7mpg UK
8.7L/100 km27mpg US32.5mpg UK
Quarter mile
14.7s
Calculated
15.3s
Calculated
Power-to-weight
155hp/t116kW/t71hp/1000 lb
Calculated
145hp/t108kW/t66hp/1000 lb
Calculated
Torque-to-weight
201Nm/t135lb-ft/ton
Calculated
194Nm/t130lb-ft/ton
Calculated
Estimated range
734km456mi
Calculated
541km336mi
Calculated
Displacement
3,123cc191cu in
3,564cc217cu in
Length
4,916mm194in
4,985mm196in
Width
1,855mm73in
1,843mm73in
Height
1,459mm57in
1,464mm58in
Wheelbase
2,843mm112in
2,957mm116in
Front track
1,612mm63in
1,596mm63in
Rear track
1,618mm64in
1,581mm62in
Trunk volume-
464L
Max trunk volume
546L
-
Doors
4
4
Seats
5
5
Fuel tank
80L
66L
CO2 emissions
262g/km
285g/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 A6 (4F/C6) 3.2 FSI V6Cadillac STS 3.6 i V6PowerTorque
  • AUDI A6 (4F/C6) 3.2 FSI V6: Power / Torque
  • Cadillac STS 3.6 i V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 (4F/C6)3.2 FSI V66,500 rpm3,250 rpm6,750 rpm
CadillacSTS3.6 i V66,200 rpm3,200 rpm6,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 (4F/C6)3.2 FSI V6CadillacSTS3.6 i V6
Acceleration checkpoints
0-60 mph
0-97 km/h
6.5 s
7.0 s
0-100 km/h
0-62 mph
6.8 s
7.4 s
0-200 km/h
0-124 mph
21.5 s
28.5 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
229 km/h
142 mph
Drag race simulation
60 ft
18 m
2.7 s
2.7 s
330 ft
101 m
6.7 s
6.9 s
1/8 mile
201 m
9.8 s
10.2 s
1000 ft
305 m
12.5 s
13.0 s
1/4 mile
402 m
14.7 s
15.3 s
Trap speed
1/4 mile
402 m
166 km/h
103 mph
156 km/h
97 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)3.2 FSI V6
255 hp
190 kW
CadillacSTS3.6 i V6
258 hp
192 kW

Cadillac STS 3.6 i V6 has 3 hp more than AUDI A6 (4F/C6) 3.2 FSI V6.

The biggest power difference is between AUDI A6 (4F/C6) 3.2 FSI V6 and Cadillac STS 3.6 i V6: 3 hp (2 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)3.2 FSI V6
330 Nm
243 lb-ft
CadillacSTS3.6 i V6
346 Nm
255 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)3.2 FSI V6
1,640 kg
3,616 lb
CadillacSTS3.6 i V6
1,782 kg
3,929 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)3.2 FSI V6
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
CadillacSTS3.6 i V6
229 km/h
142 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)3.2 FSI V66.8 s
CadillacSTS3.6 i V67.4 s

Although Cadillac STS 3.6 i V6 has more power, AUDI A6 (4F/C6) 3.2 FSI V6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between AUDI A6 (4F/C6) 3.2 FSI V6 and Cadillac STS 3.6 i V6: 0.6 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)3.2 FSI V6
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
CadillacSTS3.6 i V6
12.2 L/100 km
19.3 mpg US
23.2 mpg UK

The biggest fuel consumption difference is between AUDI A6 (4F/C6) 3.2 FSI V6 and Cadillac STS 3.6 i V6: 1.3 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
AUDIA6 (4F/C6)3.2 FSI V6
155 hp/t
116 kW/t
6.4 kg/hp
CadillacSTS3.6 i V6
145 hp/t
108 kW/t
6.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA6 (4F/C6)3.2 FSI V6
734 km
456 mi
CadillacSTS3.6 i V6
541 km
336 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 (4F/C6)3.2 FSI V6
255 hp
190 kW
6.8 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
CadillacSTS3.6 i V6
258 hp
192 kW
7.4 s
229 km/h
142 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
AUDIA6 (4F/C6)3.2 FSI V6
Power
255 hp
190 kW
0-100 km/h6.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
546 L
19.3 cu ft
Length
4,916 mm
193.5 in
Height
1,459 mm
57.4 in
CadillacSTS3.6 i V6
Power
258 hp
192 kW
0-100 km/h7.4 s
Top speed
229 km/h
142 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
AUDIA6 (4F/C6)3.2 FSI V6
Power
255 hp
190 kW
0-100 km/h6.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
CadillacSTS3.6 i V6
Power
258 hp
192 kW
0-100 km/h7.4 s
Top speed
229 km/h
142 mph
12.2 L/100 km
19.3 mpg US
23.2 mpg UK

AUDI A6 (4F/C6) 3.2 FSI V6 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
AUDIA6 (4F/C6)3.2 FSI V6
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
6.8 s
CadillacSTS3.6 i V6
12.2 L/100 km
19.3 mpg US
23.2 mpg UK
7.4 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
AUDIA6 (4F/C6)3.2 FSI V6
155 hp/t
116 kW/t
6.4 kg/hp
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
CadillacSTS3.6 i V6
145 hp/t
108 kW/t
6.9 kg/hp
12.2 L/100 km
19.3 mpg US
23.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 (4F/C6)3.2 FSI V6CadillacSTS3.6 i V6
Power
255 hp
190 kW
258 hp
192 kW
Torque
330 Nm
243 lb-ft
346 Nm
255 lb-ft
Acceleration
6.8 s
7.4 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
229 km/h
142 mph
Lightness
1,640 kg
3,616 lb
1,782 kg
3,929 lb
Fuel consumption
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
12.2 L/100 km
19.3 mpg US
23.2 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
546 L
19.3 cu ft
Length
4,916 mm
193.5 in
Height
1,459 mm
57.4 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
734 km
456 mi
541 km
336 mi
CO2 score
262 g/km
285 g/km
Trunk score
546 L
19.3 cu ft
464 L
16.4 cu ft
Power-to-weight score
155 hp/t
116 kW/t
6.4 kg/hp
145 hp/t
108 kW/t
6.9 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 A6 (4F/C6) 3.2 FSI V6Cadillac STS 3.6 i V6
Consumption10.9 L/100 km21.6 mpg US25.9 mpg UK12.2 L/100 km19.3 mpg US23.2 mpg UK
Cost / 100 km19.08 LC100 km21.35 LC100 km
Cost / 100 mi30.70 LC100 mi34.36 LC100 mi
Annual fuel used1,635 L432 US gal360 UK gal1,830 L483 US gal403 UK gal
Annual fuel cost2,861 LC/year3,203 LC/year

Head-to-head comparisons

AUDI A6 (4F/C6) 3.2 FSI V6

  • Is 142 kg lighter
  • Is 0.6 s quicker from 0-100 km/h
  • Has 31 km/h (19 mph) higher top speed
  • Uses 1.3 L/100 km less fuel
  • Has 11 hp/t better power-to-weight
  • Has 193 km (120 mi) more estimated range
  • Has 82 L more trunk volume
  • Emits 23 g/km less CO2

Pros

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

Cons

  • Lowest power

Cadillac STS 3.6 i V6

  • Has 3 hp more
  • Has 16 Nm more

Pros

  • Most powerful
  • Highest torque

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 (4F/C6) 3.2 FSI V6
Cadillac STS 3.6 i V6
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