Car comparison

Porsche 944 2.5 Turbo S CATvsBMW 6 Series (E24) · Facelift 1987 M 635CSi

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

New comparison

Porsche 944

2.5 Turbo S CAT

250 hp2479 ccGasolineRWDManualTurbochargedCoupe1989-1991

BMW 6 Series (E24) · Facelift 1987

M 635CSi

260 hp3453 ccGasolineRWDManualNaturally aspiratedCoupe1987-1989

Comparison overview

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

Porsche 944 2.5 Turbo S CAT

Quickest 0-100 km/h
5.9 s
Fastest top speed
260 km/h
162 mph
Highest torque
350 Nm
258 lb-ft
Lightest
1,400 kg
3,086 lb
Best power-to-weight
179 hp/t
133 kW/t
5.6 kg/hp
Lowest city consumption
13.3 L/100 km
17.7 mpg US
21.2 mpg UK
Lowest highway consumption
7.1 L/100 km
33.1 mpg US
39.8 mpg UK
Best overall score
57/100
Best performance score
61/100
Best practicality score
50/100

BMW 6 Series (E24) Facelift 1987 M 635CSi

Most powerful
260 hp
194 kW
Best economy score
75/100

Specification comparison

Specification comparison
Model	Porsche9442.5 Turbo S CAT	BMW6 Series (E24)Facelift 1987M 635CSi
Power	250hp186kW	260hp194kW
Torque	350Nm258lb-ft	330Nm243lb-ft
Curb weight	1,400kg3,086lb	1,515kg3,340lb
Gross weight	1,740kg3,836lb	1,865kg4,112lb
Top speed	260 km/h 162 mph	242 km/h 150 mph
To 99% top speed	79.6s99% target: 257 km/h / 160 mph Calculated	92.7s99% target: 240 km/h / 149 mph Calculated
0-100 km/h	5.9s	6.9s
0-200 km/h	21.2s Calculated	28.9s Calculated
0-60 mph	5.6s Calculated	6.5s Calculated
Fuel consumption	-	11.9L/100 km19.8mpg US23.7mpg UK
Fuel consumption city	13.3L/100 km17.7mpg US21.2mpg UK	17.6L/100 km13.4mpg US16.1mpg UK
Fuel consumption highway	7.1L/100 km33.1mpg US39.8mpg UK	8.1L/100 km29mpg US34.9mpg UK
Quarter mile	14.0s Calculated	14.9s Calculated
Power-to-weight	179hp/t133kW/t81hp/1000 lb Calculated	172hp/t128kW/t78hp/1000 lb Calculated
Torque-to-weight	250Nm/t167lb-ft/ton Calculated	218Nm/t146lb-ft/ton Calculated
Estimated range	-	588km366mi Calculated
Displacement	2,479cc151cu in	3,453cc211cu in
Length	4,230mm167in	4,815mm190in
Width	1,735mm68in	1,725mm68in
Height	1,275mm50in	1,355mm53in
Wheelbase	2,400mm94in	2,625mm103in
Front track	1,457mm57in	1,430mm56in
Rear track	1,451mm57in	1,464mm58in
Ground clearance	125mm5in	-
Trunk volume	-	335L
Doors	2	2
Seats	4	4
Fuel tank	80L	70L

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.

Porsche 944 2.5 Turbo S CATBMW 6 Series (E24) Facelift 1987 M 635CSiPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Porsche9442.5 Turbo S CAT	5,800 rpm	3,500 rpm	6,500 rpm
BMW6 Series (E24)Facelift 1987M 635CSi	6,500 rpm	4,500 rpm	6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Porsche9442.5 Turbo S CAT	BMW6 Series (E24)Facelift 1987M 635CSi
	Acceleration checkpoints
0-60 mph 0-97 km/h	5.6 s	6.5 s
0-100 km/h 0-62 mph	5.9 s	6.9 s
0-200 km/h 0-124 mph	21.2 s	28.9 s
Top speed	260 km/h 162 mph	242 km/h 150 mph
	Drag race simulation
60 ft 18 m	2.3 s	2.4 s
330 ft 101 m	6.1 s	6.4 s
1/8 mile 201 m	9.2 s	9.7 s
1000 ft 305 m	11.8 s	12.5 s
1/4 mile 402 m	14.0 s	14.9 s
Trap speed 1/4 mile 402 m	167 km/h 104 mph	154 km/h 96 mph

Power comparison

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

Chart data table
Vehicle	Value
Porsche9442.5 Turbo S CAT	250 hp 186 kW
BMW6 Series (E24)Facelift 1987M 635CSi	260 hp 194 kW

BMW 6 Series (E24) Facelift 1987 M 635CSi has 10 hp more than Porsche 944 2.5 Turbo S CAT.

The biggest power difference is between Porsche 944 2.5 Turbo S CAT and BMW 6 Series (E24) Facelift 1987 M 635CSi: 10 hp (7 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Porsche9442.5 Turbo S CAT	350 Nm 258 lb-ft
BMW6 Series (E24)Facelift 1987M 635CSi	330 Nm 243 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
Porsche9442.5 Turbo S CAT	1,400 kg 3,086 lb
BMW6 Series (E24)Facelift 1987M 635CSi	1,515 kg 3,340 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
Porsche9442.5 Turbo S CAT	260 km/h 162 mph
BMW6 Series (E24)Facelift 1987M 635CSi	242 km/h 150 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
Porsche9442.5 Turbo S CAT	5.9 s
BMW6 Series (E24)Facelift 1987M 635CSi	6.9 s

Although BMW 6 Series (E24) Facelift 1987 M 635CSi has more power, Porsche 944 2.5 Turbo S CAT is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 944 2.5 Turbo S CAT and BMW 6 Series (E24) Facelift 1987 M 635CSi: 1.0 s.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
Porsche9442.5 Turbo S CAT	179 hp/t 133 kW/t 5.6 kg/hp
BMW6 Series (E24)Facelift 1987M 635CSi	172 hp/t 128 kW/t 5.8 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
Porsche9442.5 Turbo S CAT	250 hp 186 kW	5.9 s	260 km/h 162 mph
BMW6 Series (E24)Facelift 1987M 635CSi	260 hp 194 kW	6.9 s	242 km/h 150 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

Porsche9442.5 Turbo S CAT

Power	250 hp 186 kW
0-100 km/h	5.9 s
Top speed 260 km/h 162 mph

Doors/seats	2 doors 4 seats
Trunk	-
Length	4,230 mm 166.5 in
Height	1,275 mm 50.2 in

BMW6 Series (E24)Facelift 1987M 635CSi

Power	260 hp 194 kW
0-100 km/h	6.9 s
Top speed 242 km/h 150 mph

Doors/seats	2 doors 4 seats
Trunk	335 L 11.8 cu ft
Length	4,815 mm 189.6 in
Height	1,355 mm 53.3 in

Detailed score breakdown

Vehicle

Porsche9442.5 Turbo S CAT

BMW6 Series (E24)Facelift 1987M 635CSi

Power

250 hp

186 kW

260 hp

194 kW

Torque

350 Nm

258 lb-ft

330 Nm

243 lb-ft

Acceleration

5.9 s

6.9 s

Top speed

260 km/h

162 mph

242 km/h

150 mph

Lightness

1,400 kg

3,086 lb

1,515 kg

3,340 lb

Fuel consumption

11.9 L/100 km

19.8 mpg US

23.7 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	-
Length	4,230 mm 166.5 in
Height	1,275 mm 50.2 in

Doors/seats	2 doors 4 seats
Trunk	335 L 11.8 cu ft
Length	4,815 mm 189.6 in
Height	1,355 mm 53.3 in

Range score

588 km

366 mi

Trunk score

335 L

11.8 cu ft

Power-to-weight score

179 hp/t

133 kW/t

5.6 kg/hp

172 hp/t

128 kW/t

5.8 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	BMW 6 Series (E24) Facelift 1987 M 635CSi
Consumption	11.9 L/100 km19.8 mpg US23.7 mpg UK
Cost / 100 km	20.83 LC100 km
Cost / 100 mi	33.51 LC100 mi
Annual fuel used	1,785 L472 US gal393 UK gal
Annual fuel cost	3,124 LC/year