Car comparison

Kia Opirus 3.8 i V6 24VvsCadillac STS 3.6 i V6

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

New comparison

Kia Opirus

3.8 i V6 24V

266 hp3778 ccGasolineFWDAutomaticNaturally aspiratedSedan2007-2010
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

Kia Opirus 3.8 i V6 24V

  • Fastest top speed
    245 km/h
    152 mph Unrestricted
    230 km/h
    143 mph Restricted
  • Most powerful
    266 hp
    198 kW
  • Highest torque
    353 Nm
    260 lb-ft
  • Best power-to-weight
    146 hp/t
    109 kW/t
    6.9 kg/hp
  • Lowest combined fuel consumption
    10.9 L/100 km
    21.6 mpg US
    25.9 mpg UK
  • Best estimated range
    642 km
    399 mi
  • Best overall score
    62/100
  • Best performance score
    55/100
  • Best economy score
    78/100
  • Best practicality score
    78/100

Specification comparison

Specification comparison
ModelKiaOpirus3.8 i V6 24VCadillacSTS3.6 i V6
Power
266hp198kW
258hp192kW
Torque
353Nm260lb-ft
346Nm255lb-ft
Curb weight
1,825kg4,023lb
1,782kg3,929lb
Gross weight
2,270kg5,004lb
-
Top speed
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 mph
Calculated
229 km/h
142 mph
To 99% top speed
74.0s99% target: 243 km/h / 151 mph
Calculated
66.2s99% target: 227 km/h / 141 mph
Calculated
0-100 km/h
7.5s
7.4s
0-200 km/h
25.8s
Calculated
28.5s
Calculated
0-60 mph
7.2s
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-
18.1L/100 km13mpg US15.6mpg UK
Fuel consumption highway-
8.7L/100 km27mpg US32.5mpg UK
Quarter mile
15.3s
Calculated
15.3s
Calculated
Power-to-weight
146hp/t109kW/t66hp/1000 lb
Calculated
145hp/t108kW/t66hp/1000 lb
Calculated
Torque-to-weight
193Nm/t129lb-ft/ton
Calculated
194Nm/t130lb-ft/ton
Calculated
Estimated range
642km399mi
Calculated
541km336mi
Calculated
Displacement
3,778cc231cu in
3,564cc217cu in
Length
4,970mm196in
4,985mm196in
Width
1,850mm73in
1,843mm73in
Height
1,486mm59in
1,464mm58in
Wheelbase
2,800mm110in
2,957mm116in
Front track
1,585mm62in
1,596mm63in
Rear track
1,590mm63in
1,581mm62in
Trunk volume-
464L
Max trunk volume
450L
-
Doors
4
4
Seats
5
5
Fuel tank
70L
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.

Kia Opirus 3.8 i V6 24VCadillac STS 3.6 i V6PowerTorque
  • Kia Opirus 3.8 i V6 24V: Power / Torque
  • Cadillac STS 3.6 i V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
KiaOpirus3.8 i V6 24V6,000 rpm4,500 rpm6,250 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
MetricKiaOpirus3.8 i V6 24VCadillacSTS3.6 i V6
Acceleration checkpoints
0-60 mph
0-97 km/h
7.2 s
7.0 s
0-100 km/h
0-62 mph
7.5 s
7.4 s
0-200 km/h
0-124 mph
25.8 s
28.5 s
Top speed
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 mph
Likely limited
229 km/h
142 mph
Drag race simulation
60 ft
18 m
2.8 s
2.7 s
330 ft
101 m
6.9 s
6.9 s
1/8 mile
201 m
10.2 s
10.2 s
1000 ft
305 m
13.0 s
13.0 s
1/4 mile
402 m
15.3 s
15.3 s
Trap speed
1/4 mile
402 m
158 km/h
98 mph
156 km/h
97 mph

Power comparison

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

Chart data table
VehicleValue
KiaOpirus3.8 i V6 24V
266 hp
198 kW
CadillacSTS3.6 i V6
258 hp
192 kW

Kia Opirus 3.8 i V6 24V has 8 hp more than Cadillac STS 3.6 i V6.

The biggest power difference is between Cadillac STS 3.6 i V6 and Kia Opirus 3.8 i V6 24V: 8 hp (6 kW).

Torque comparison

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

Chart data table
VehicleValue
KiaOpirus3.8 i V6 24V
353 Nm
260 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
KiaOpirus3.8 i V6 24V
1,825 kg
4,023 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
KiaOpirus3.8 i V6 24V
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 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
KiaOpirus3.8 i V6 24V7.5 s
CadillacSTS3.6 i V67.4 s

Although Kia Opirus 3.8 i V6 24V has more power, Cadillac STS 3.6 i V6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Cadillac STS 3.6 i V6 and Kia Opirus 3.8 i V6 24V: 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
KiaOpirus3.8 i V6 24V
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 Kia Opirus 3.8 i V6 24V 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
KiaOpirus3.8 i V6 24V
146 hp/t
109 kW/t
6.9 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
KiaOpirus3.8 i V6 24V
642 km
399 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
KiaOpirus3.8 i V6 24V
266 hp
198 kW
7.5 s
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 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
KiaOpirus3.8 i V6 24V
Power
266 hp
198 kW
0-100 km/h7.5 s
Top speed
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 mph
Doors/seats
4 doors
5 seats
Trunk
450 L
15.9 cu ft
Length
4,970 mm
195.7 in
Height
1,486 mm
58.5 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
KiaOpirus3.8 i V6 24V
Power
266 hp
198 kW
0-100 km/h7.5 s
Top speed
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 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

Kia Opirus 3.8 i V6 24V 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
KiaOpirus3.8 i V6 24V
10.9 L/100 km
21.6 mpg US
25.9 mpg UK
7.5 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
KiaOpirus3.8 i V6 24V
146 hp/t
109 kW/t
6.9 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
VehicleKiaOpirus3.8 i V6 24VCadillacSTS3.6 i V6
Power
266 hp
198 kW
258 hp
192 kW
Torque
353 Nm
260 lb-ft
346 Nm
255 lb-ft
Acceleration
7.5 s
7.4 s
Top speed
Unrestricted
245 km/h152 mph
Restricted
230 km/h143 mph
229 km/h
142 mph
Lightness
1,825 kg
4,023 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
450 L
15.9 cu ft
Length
4,970 mm
195.7 in
Height
1,486 mm
58.5 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
642 km
399 mi
541 km
336 mi
CO2 score
-
285 g/km
Trunk score
450 L
15.9 cu ft
464 L
16.4 cu ft
Power-to-weight score
146 hp/t
109 kW/t
6.9 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
VehicleKia Opirus 3.8 i V6 24VCadillac 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

Kia Opirus 3.8 i V6 24V

  • Has 8 hp more
  • Has 7 Nm more
  • Has 16 km/h (10 mph) higher top speed
  • Uses 1.3 L/100 km less fuel
  • Has 1 hp/t better power-to-weight
  • Has 101 km (63 mi) more estimated range

Pros

  • Highest top speed
  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Heaviest
  • Smallest trunk

Cadillac STS 3.6 i V6

  • Is 43 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Has 14 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Lightest
  • Largest trunk

Cons

  • Lowest power
  • Highest combined fuel consumption
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Kia Opirus 3.8 i V6 24V
Cadillac STS 3.6 i V6
Compare selected cars
2 vehicles selected

Popular comparisons

3.8 i V6 24V
3.2 JTS V6
VS
KiaOpirus3.8 i V6 24VvsAlfa Romeo1593.2 JTS V6
3.6 i V6
2.8 T V6
VS
CadillacSTS3.6 i V6vsCadillacBLS2.8 T V6
3.8 i V6 24V
3.3 V6
VS
KiaOpirus3.8 i V6 24VvsHyundaiSonata V (NF)Facelift 20083.3 V6
3.6 i V6
28T
VS
CadillacSTS3.6 i V6vsCadillacXTS28T
3.8 i V6 24V
350
VS
KiaOpirus3.8 i V6 24VvsLexusES V (XV40)350
3.8 i V6 24V
3.5i V6
VS
KiaOpirus3.8 i V6 24VvsToyotaCamry VI (XV40)3.5i V6
3.6 i V6
3.2 i V6 24V
VS
CadillacSTS3.6 i V6vsAcuraTL III (UA6/7)3.2 i V6 24V
3.8 i V6 24V
3.2 V6 FSI
VS
KiaOpirus3.8 i V6 24VvsVolkswagenPassat (B6)3.2 V6 FSI
3.8 i V6 24V
3.3i V6 24V
VS
KiaOpirus3.8 i V6 24VvsHyundaiGenesis3.3i V6 24V
3.6 i V6
2.4i T5 20V
VS
CadillacSTS3.6 i V6vsVolvoS602.4i T5 20V
3.6 i V6
3.3 i V6 24V
VS
CadillacSTS3.6 i V6vsHyundaiNF3.3 i V6 24V
3.8 i V6 24V
2.5 GT
VS
KiaOpirus3.8 i V6 24VvsSubaruLegacy V2.5 GT
Kia Opirus 3.8 i V6 24V vs Cadillac STS 3.6 i V6 - car comparison - FastVsFaster