Car comparison

Opel Vectra C · Facelift 2005 2.8i V6 24V TurbovsCadillac STS 3.6 i V6

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

New comparison

Opel Vectra C · Facelift 2005

2.8i V6 24V Turbo

250 hp2792 ccGasolineFWDManualTurbochargedSedan2006-2008

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.

Opel Vectra C Facelift 2005 2.8i V6 24V Turbo

Quickest 0-100 km/h
6.9 s
Fastest top speed
255 km/h
158 mph
Highest torque
350 Nm
258 lb-ft
Lightest
1,495 kg
3,296 lb
Best power-to-weight
167 hp/t
125 kW/t
6.0 kg/hp
Lowest combined fuel consumption
10.3 L/100 km
22.8 mpg US
27.4 mpg UK
Lowest city consumption
15.4 L/100 km
15.3 mpg US
18.3 mpg UK
Lowest highway consumption
7.3 L/100 km
32.2 mpg US
38.7 mpg UK
Best estimated range
592 km
368 mi
Largest trunk
500 L
Best overall score
64/100
Best performance score
58/100
Best economy score
79/100
Best practicality score
77/100

Cadillac STS 3.6 i V6

Most powerful
258 hp
192 kW

Specification comparison

Specification comparison
Model	OpelVectra CFacelift 20052.8i V6 24V Turbo	CadillacSTS3.6 i V6
Power	250hp186kW	258hp192kW
Torque	350Nm258lb-ft	346Nm255lb-ft
Curb weight	1,495kg3,296lb	1,782kg3,929lb
Gross weight	2,040kg4,497lb	-
Top speed	255 km/h 158 mph	229 km/h 142 mph
To 99% top speed	67.4s99% target: 252 km/h / 157 mph Calculated	66.2s99% target: 227 km/h / 141 mph Calculated
0-100 km/h	6.9s	7.4s
0-200 km/h	21.9s Calculated	28.5s Calculated
0-60 mph	6.6s Calculated	7.0s Calculated
Fuel consumption	10.3L/100 km22.8mpg US27.4mpg UK	12.2L/100 km19.3mpg US23.2mpg UK
Fuel consumption city	15.4L/100 km15.3mpg US18.3mpg UK	18.1L/100 km13mpg US15.6mpg UK
Fuel consumption highway	7.3L/100 km32.2mpg US38.7mpg UK	8.7L/100 km27mpg US32.5mpg UK
Quarter mile	14.8s Calculated	15.3s Calculated
Power-to-weight	167hp/t125kW/t76hp/1000 lb Calculated	145hp/t108kW/t66hp/1000 lb Calculated
Torque-to-weight	234Nm/t157lb-ft/ton Calculated	194Nm/t130lb-ft/ton Calculated
Estimated range	592km368mi Calculated	541km336mi Calculated
Displacement	2,792cc170cu in	3,564cc217cu in
Length	4,611mm182in	4,985mm196in
Width	1,798mm71in	1,843mm73in
Height	1,460mm57in	1,464mm58in
Wheelbase	2,700mm106in	2,957mm116in
Front track	1,536mm60in	1,596mm63in
Rear track	1,525mm60in	1,581mm62in
Trunk volume	-	464L
Max trunk volume	500L	-
Doors	4	4
Seats	5	5
Fuel tank	61L	66L
CO2 emissions	-	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.

Opel Vectra C Facelift 2005 2.8i V6 24V TurboCadillac STS 3.6 i V6PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
OpelVectra CFacelift 20052.8i V6 24V Turbo	5,500 rpm	-	5,750 rpm
CadillacSTS3.6 i V6	6,200 rpm	3,200 rpm	6,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	OpelVectra CFacelift 20052.8i V6 24V Turbo	CadillacSTS3.6 i V6
	Acceleration checkpoints
0-60 mph 0-97 km/h	6.6 s	7.0 s
0-100 km/h 0-62 mph	6.9 s	7.4 s
0-200 km/h 0-124 mph	21.9 s	28.5 s
Top speed	255 km/h 158 mph	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	9.9 s	10.2 s
1000 ft 305 m	12.6 s	13.0 s
1/4 mile 402 m	14.8 s	15.3 s
Trap speed 1/4 mile 402 m	165 km/h 103 mph	156 km/h 97 mph

Power comparison

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

Chart data table
Vehicle	Value
OpelVectra CFacelift 20052.8i V6 24V Turbo	250 hp 186 kW
CadillacSTS3.6 i V6	258 hp 192 kW

Cadillac STS 3.6 i V6 has 8 hp more than Opel Vectra C Facelift 2005 2.8i V6 24V Turbo.

The biggest power difference is between Opel Vectra C Facelift 2005 2.8i V6 24V Turbo and Cadillac STS 3.6 i V6: 8 hp (6 kW).

Torque comparison

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

Chart data table
Vehicle	Value
OpelVectra CFacelift 20052.8i V6 24V Turbo	350 Nm 258 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
Vehicle	Value
OpelVectra CFacelift 20052.8i V6 24V Turbo	1,495 kg 3,296 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
Vehicle	Value
OpelVectra CFacelift 20052.8i V6 24V Turbo	255 km/h 158 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
Vehicle	Value
OpelVectra CFacelift 20052.8i V6 24V Turbo	6.9 s
CadillacSTS3.6 i V6	7.4 s

Although Cadillac STS 3.6 i V6 has more power, Opel Vectra C Facelift 2005 2.8i V6 24V Turbo is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Opel Vectra C Facelift 2005 2.8i V6 24V Turbo and Cadillac STS 3.6 i V6: 0.5 s.

Fuel consumption comparison

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

Chart data table
Vehicle	Value
OpelVectra CFacelift 20052.8i V6 24V Turbo	10.3 L/100 km 22.8 mpg US 27.4 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 Opel Vectra C Facelift 2005 2.8i V6 24V Turbo and Cadillac STS 3.6 i V6: 1.9 L/100 km.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
Vehicle	Value
OpelVectra CFacelift 20052.8i V6 24V Turbo	167 hp/t 125 kW/t 6.0 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
Vehicle	Value
OpelVectra CFacelift 20052.8i V6 24V Turbo	592 km 368 mi
CadillacSTS3.6 i V6	541 km 336 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
OpelVectra CFacelift 20052.8i V6 24V Turbo	250 hp 186 kW	6.9 s	255 km/h 158 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.

Vehicle

Performance score

Practicality score

OpelVectra CFacelift 20052.8i V6 24V Turbo

Power	250 hp 186 kW
0-100 km/h	6.9 s
Top speed 255 km/h 158 mph

Doors/seats	4 doors 5 seats
Trunk	500 L 17.7 cu ft
Length	4,611 mm 181.5 in
Height	1,460 mm 57.5 in

CadillacSTS3.6 i V6

Power	258 hp 192 kW
0-100 km/h	7.4 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.

Vehicle

Performance score

Fuel economy score

OpelVectra CFacelift 20052.8i V6 24V Turbo

Power	250 hp 186 kW
0-100 km/h	6.9 s
Top speed 255 km/h 158 mph

10.3 L/100 km

22.8 mpg US

27.4 mpg UK

CadillacSTS3.6 i V6

Power	258 hp 192 kW
0-100 km/h	7.4 s
Top speed 229 km/h 142 mph

12.2 L/100 km

19.3 mpg US

23.2 mpg UK

Opel Vectra C Facelift 2005 2.8i V6 24V Turbo 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
OpelVectra CFacelift 20052.8i V6 24V Turbo	10.3 L/100 km 22.8 mpg US 27.4 mpg UK	6.9 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
OpelVectra CFacelift 20052.8i V6 24V Turbo	167 hp/t 125 kW/t 6.0 kg/hp	10.3 L/100 km 22.8 mpg US 27.4 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

Vehicle

OpelVectra CFacelift 20052.8i V6 24V Turbo

CadillacSTS3.6 i V6

Power

250 hp

186 kW

258 hp

192 kW

Torque

350 Nm

258 lb-ft

346 Nm

255 lb-ft

Acceleration

6.9 s

7.4 s

Top speed

255 km/h

158 mph

229 km/h

142 mph

Lightness

1,495 kg

3,296 lb

1,782 kg

3,929 lb

Fuel consumption

10.3 L/100 km

22.8 mpg US

27.4 mpg UK

12.2 L/100 km

19.3 mpg US

23.2 mpg UK

Practicality

Doors/seats	4 doors 5 seats
Trunk	500 L 17.7 cu ft
Length	4,611 mm 181.5 in
Height	1,460 mm 57.5 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

592 km

368 mi

541 km

336 mi

CO2 score

285 g/km

Trunk score

500 L

17.7 cu ft

464 L

16.4 cu ft

Power-to-weight score

167 hp/t

125 kW/t

6.0 kg/hp

145 hp/t

108 kW/t

6.9 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	Opel Vectra C Facelift 2005 2.8i V6 24V Turbo	Cadillac STS 3.6 i V6
Consumption	10.3 L/100 km22.8 mpg US27.4 mpg UK	12.2 L/100 km19.3 mpg US23.2 mpg UK
Cost / 100 km	18.03 LC100 km	21.35 LC100 km
Cost / 100 mi	29.01 LC100 mi	34.36 LC100 mi
Annual fuel used	1,545 L408 US gal340 UK gal	1,830 L483 US gal403 UK gal
Annual fuel cost	2,704 LC/year	3,203 LC/year