Car comparison

Opel Insignia Sedan (A) OPC 2.8 V6 TurbovsCadillac STS 4.6 i V8

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

New comparison

Opel Insignia Sedan (A)

OPC 2.8 V6 Turbo

325 hp2792 ccGasolineAWDManualTurbochargedSedan2009-2013

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.

Opel Insignia Sedan (A) OPC 2.8 V6 Turbo

Quickest 0-100 km/h
6.0 s
Fastest top speed
265 km/h
165 mph Unrestricted
250 km/h
155 mph Restricted
Most powerful
325 hp
242 kW
Highest torque
435 Nm
321 lb-ft
Lightest
1,810 kg
3,990 lb
Best power-to-weight
180 hp/t
134 kW/t
5.6 kg/hp
Lowest combined fuel consumption
11.4 L/100 km
20.6 mpg US
24.8 mpg UK
Lowest city consumption
16.6 L/100 km
14.2 mpg US
17.0 mpg UK
Lowest highway consumption
8.4 L/100 km
28.0 mpg US
33.6 mpg UK
Lowest CO2 emissions
249 g/km
Best estimated range
614 km
382 mi
Largest trunk
500 L
Best overall score
69/100
Best performance score
66/100
Best economy score
76/100
Best practicality score
76/100

Specification comparison

Specification comparison
Model	OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	CadillacSTS4.6 i V8
Power	325hp242kW	325hp242kW
Torque	435Nm321lb-ft	420Nm310lb-ft
Curb weight	1,810kg3,990lb	1,920kg4,233lb
Gross weight	2,315kg5,104lb	-
Top speed	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph Calculated	248 km/h 154 mph
To 99% top speed	61.6s99% target: 262 km/h / 163 mph Calculated	64.9s99% target: 246 km/h / 153 mph Calculated
0-100 km/h	6.0s	6.7s
0-200 km/h	18.3s Calculated	22.3s Calculated
0-60 mph	5.7s Calculated	6.4s Calculated
Fuel consumption	11.4L/100 km20.6mpg US24.8mpg UK	14.1L/100 km16.7mpg US20.0mpg UK
Fuel consumption city	16.6L/100 km14.2mpg US17.0mpg UK	19.7L/100 km11.9mpg US14.3mpg UK
Fuel consumption highway	8.4L/100 km28mpg US33.6mpg UK	10.9L/100 km21.6mpg US25.9mpg UK
Quarter mile	13.9s Calculated	14.6s Calculated
Power-to-weight	180hp/t134kW/t81hp/1000 lb Calculated	169hp/t126kW/t77hp/1000 lb Calculated
Torque-to-weight	240Nm/t161lb-ft/ton Calculated	219Nm/t146lb-ft/ton Calculated
Estimated range	614km382mi Calculated	468km291mi Calculated
Displacement	2,792cc170cu in	4,565cc279cu in
Length	4,830mm190in	4,985mm196in
Width	1,858mm73in	1,843mm73in
Height	1,498mm59in	1,464mm58in
Wheelbase	2,737mm108in	2,957mm116in
Front track	1,585mm62in	1,596mm63in
Rear track	1,587mm62in	1,581mm62in
Trunk volume	500L	464L
Max trunk volume	1,010L	-
Doors	4	4
Seats	5	5
Fuel tank	70L	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.

Opel Insignia Sedan (A) OPC 2.8 V6 TurboCadillac STS 4.6 i V8PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	5,250 rpm	5,250 rpm	5,500 rpm
CadillacSTS4.6 i V8	6,400 rpm	4,400 rpm	6,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	CadillacSTS4.6 i V8
	Acceleration checkpoints
0-60 mph 0-97 km/h	5.7 s	6.4 s
0-100 km/h 0-62 mph	6.0 s	6.7 s
0-200 km/h 0-124 mph	18.3 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	9.3 s	9.8 s
1000 ft 305 m	11.8 s	12.4 s
1/4 mile 402 m	13.9 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
Vehicle	Value
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	325 hp 242 kW
CadillacSTS4.6 i V8	325 hp 242 kW

Torque comparison

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

Chart data table
Vehicle	Value
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	435 Nm 321 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
Vehicle	Value
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	1,810 kg 3,990 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
Vehicle	Value
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	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
Vehicle	Value
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	6.0 s
CadillacSTS4.6 i V8	6.7 s

The biggest 0-100 km/h difference is between Opel Insignia Sedan (A) OPC 2.8 V6 Turbo and Cadillac STS 4.6 i V8: 0.7 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
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	11.4 L/100 km 20.6 mpg US 24.8 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 Opel Insignia Sedan (A) OPC 2.8 V6 Turbo and Cadillac STS 4.6 i V8: 2.7 L/100 km.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	180 hp/t 134 kW/t 5.6 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
Vehicle	Value
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	614 km 382 mi
CadillacSTS4.6 i V8	468 km 291 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	325 hp 242 kW	6.0 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.

Vehicle

Performance score

Practicality score

OpelInsignia Sedan (A)OPC 2.8 V6 Turbo

Power	325 hp 242 kW
0-100 km/h	6.0 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	4,830 mm 190.2 in
Height	1,498 mm 59.0 in

CadillacSTS4.6 i V8

Power	325 hp 242 kW
0-100 km/h	6.7 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.

Vehicle

Performance score

Fuel economy score

OpelInsignia Sedan (A)OPC 2.8 V6 Turbo

Power	325 hp 242 kW
0-100 km/h	6.0 s
Top speed Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph

11.4 L/100 km

20.6 mpg US

24.8 mpg UK

CadillacSTS4.6 i V8

Power	325 hp 242 kW
0-100 km/h	6.7 s
Top speed 248 km/h 154 mph

14.1 L/100 km

16.7 mpg US

20.0 mpg UK

Opel Insignia Sedan (A) OPC 2.8 V6 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
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	11.4 L/100 km 20.6 mpg US 24.8 mpg UK	6.0 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
OpelInsignia Sedan (A)OPC 2.8 V6 Turbo	180 hp/t 134 kW/t 5.6 kg/hp	11.4 L/100 km 20.6 mpg US 24.8 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

Vehicle

OpelInsignia Sedan (A)OPC 2.8 V6 Turbo

CadillacSTS4.6 i V8

Power

325 hp

242 kW

325 hp

242 kW

Torque

435 Nm

321 lb-ft

420 Nm

310 lb-ft

Acceleration

6.0 s

6.7 s

Top speed

Unrestricted

265 km/h165 mph

Restricted

250 km/h155 mph

248 km/h

154 mph

Lightness

1,810 kg

3,990 lb

1,920 kg

4,233 lb

Fuel consumption

11.4 L/100 km

20.6 mpg US

24.8 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	4,830 mm 190.2 in
Height	1,498 mm 59.0 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

614 km

382 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

180 hp/t

134 kW/t

5.6 kg/hp

169 hp/t

126 kW/t

5.9 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 Insignia Sedan (A) OPC 2.8 V6 Turbo	Cadillac STS 4.6 i V8
Consumption	11.4 L/100 km20.6 mpg US24.8 mpg UK	14.1 L/100 km16.7 mpg US20 mpg UK
Cost / 100 km	19.95 LC100 km	24.68 LC100 km
Cost / 100 mi	32.11 LC100 mi	39.71 LC100 mi
Annual fuel used	1,710 L452 US gal376 UK gal	2,115 L559 US gal465 UK gal
Annual fuel cost	2,993 LC/year	3,701 LC/year