Car comparison

Porsche 968 Cabrio 3.0 16VvsAlfa Romeo RZ 3.0 i V6

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

New comparison

Porsche 968 Cabrio

3.0 16V

240 hp2990 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible1991-1995
VS

Alfa Romeo RZ

3.0 i V6

210 hp2959 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible1988-1993

Comparison overview

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

Best choices

Porsche 968 Cabrio 3.0 16V

  • Quickest 0-100 km/h
    6.5 s
  • Fastest top speed
    252 km/h
    157 mph
  • Most powerful
    240 hp
    179 kW
  • Highest torque
    305 Nm
    225 lb-ft
  • Best power-to-weight
    167 hp/t
    124 kW/t
    6.0 kg/hp
  • Lowest combined fuel consumption
    8.8 L/100 km
    26.7 mpg US
    32.1 mpg UK
  • Lowest highway consumption
    7.1 L/100 km
    33.1 mpg US
    39.8 mpg UK
  • Best estimated range
    841 km
    523 mi
  • Largest trunk
    225 L
  • Best overall score
    49/100
  • Best performance score
    57/100
  • Best economy score
    83/100
  • Best practicality score
    32/100

Specification comparison

Specification comparison
ModelPorsche968 Cabrio3.0 16VAlfa RomeoRZ3.0 i V6
Power
240hp179kW
210hp157kW
Torque
305Nm225lb-ft
245Nm181lb-ft
Curb weight
1,440kg3,175lb
1,380kg3,042lb
Gross weight
1,790kg3,946lb
1,550kg3,417lb
Top speed
252 km/h
157 mph
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph
Calculated
To 99% top speed
86.9s99% target: 249 km/h / 155 mph
Calculated
95.6s99% target: 238 km/h / 148 mph
Calculated
0-100 km/h
6.5s
7.5s
0-200 km/h
24.7s
Calculated
31.2s
Calculated
0-60 mph
6.2s
Calculated
7.1s
Calculated
Fuel consumption
8.8L/100 km26.7mpg US32.1mpg UK
9.3L/100 km25.3mpg US30.4mpg UK
Fuel consumption city
14.8L/100 km15.9mpg US19.1mpg UK
13.2L/100 km17.8mpg US21.4mpg UK
Fuel consumption highway
7.1L/100 km33.1mpg US39.8mpg UK
7.2L/100 km32.7mpg US39.2mpg UK
Quarter mile
14.5s
Calculated
15.4s
Calculated
Power-to-weight
167hp/t124kW/t76hp/1000 lb
Calculated
152hp/t113kW/t69hp/1000 lb
Calculated
Torque-to-weight
212Nm/t142lb-ft/ton
Calculated
178Nm/t119lb-ft/ton
Calculated
Estimated range
841km523mi
Calculated
753km468mi
Calculated
Displacement
2,990cc182cu in
2,959cc181cu in
Length
4,320mm170in
4,060mm160in
Width
1,735mm68in
1,730mm68in
Height
1,275mm50in
1,300mm51in
Wheelbase
2,400mm94in
2,510mm99in
Front track
1,470mm58in
1,465mm58in
Rear track
1,450mm57in
1,425mm56in
Trunk volume
225L
120L
Max trunk volume
510L
390L
Doors
2
2
Seats
2
2
Fuel tank
74L
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 968 Cabrio 3.0 16VAlfa Romeo RZ 3.0 i V6PowerTorque
  • Porsche 968 Cabrio 3.0 16V: Power / Torque
  • Alfa Romeo RZ 3.0 i V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche968 Cabrio3.0 16V6,200 rpm4,100 rpm6,450 rpm
Alfa RomeoRZ3.0 i V66,200 rpm4,500 rpm6,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche968 Cabrio3.0 16VAlfa RomeoRZ3.0 i V6
Acceleration checkpoints
0-60 mph
0-97 km/h
6.2 s
7.1 s
0-100 km/h
0-62 mph
6.5 s
7.5 s
0-200 km/h
0-124 mph
24.7 s
31.2 s
Top speed
252 km/h
157 mph
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph
Likely limited
Drag race simulation
60 ft
18 m
2.4 s
2.5 s
330 ft
101 m
6.3 s
6.7 s
1/8 mile
201 m
9.5 s
10.1 s
1000 ft
305 m
12.3 s
13.0 s
1/4 mile
402 m
14.5 s
15.4 s
Trap speed
1/4 mile
402 m
160 km/h
99 mph
151 km/h
94 mph

Power comparison

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

Chart data table
VehicleValue
Porsche968 Cabrio3.0 16V
240 hp
179 kW
Alfa RomeoRZ3.0 i V6
210 hp
157 kW

Porsche 968 Cabrio 3.0 16V has 30 hp more than Alfa Romeo RZ 3.0 i V6.

The biggest power difference is between Alfa Romeo RZ 3.0 i V6 and Porsche 968 Cabrio 3.0 16V: 30 hp (22 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche968 Cabrio3.0 16V
305 Nm
225 lb-ft
Alfa RomeoRZ3.0 i V6
245 Nm
181 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche968 Cabrio3.0 16V
1,440 kg
3,175 lb
Alfa RomeoRZ3.0 i V6
1,380 kg
3,042 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
Porsche968 Cabrio3.0 16V
252 km/h
157 mph
Alfa RomeoRZ3.0 i V6
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
Porsche968 Cabrio3.0 16V6.5 s
Alfa RomeoRZ3.0 i V67.5 s

The biggest 0-100 km/h difference is between Porsche 968 Cabrio 3.0 16V and Alfa Romeo RZ 3.0 i V6: 1.0 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
Porsche968 Cabrio3.0 16V
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
Alfa RomeoRZ3.0 i V6
9.3 L/100 km
25.3 mpg US
30.4 mpg UK

The biggest fuel consumption difference is between Porsche 968 Cabrio 3.0 16V and Alfa Romeo RZ 3.0 i V6: 0.5 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
Porsche968 Cabrio3.0 16V
167 hp/t
124 kW/t
6.0 kg/hp
Alfa RomeoRZ3.0 i V6
152 hp/t
113 kW/t
6.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche968 Cabrio3.0 16V
841 km
523 mi
Alfa RomeoRZ3.0 i V6
753 km
468 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche968 Cabrio3.0 16V
240 hp
179 kW
6.5 s
252 km/h
157 mph
Alfa RomeoRZ3.0 i V6
210 hp
157 kW
7.5 s
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 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
Porsche968 Cabrio3.0 16V
Power
240 hp
179 kW
0-100 km/h6.5 s
Top speed
252 km/h
157 mph
Doors/seats
2 doors
2 seats
Trunk
225 L
7.9 cu ft
Length
4,320 mm
170.1 in
Height
1,275 mm
50.2 in
Alfa RomeoRZ3.0 i V6
Power
210 hp
157 kW
0-100 km/h7.5 s
Top speed
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph
Doors/seats
2 doors
2 seats
Trunk
120 L
4.2 cu ft
Length
4,060 mm
159.8 in
Height
1,300 mm
51.2 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
Porsche968 Cabrio3.0 16V
Power
240 hp
179 kW
0-100 km/h6.5 s
Top speed
252 km/h
157 mph
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
Alfa RomeoRZ3.0 i V6
Power
210 hp
157 kW
0-100 km/h7.5 s
Top speed
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph
9.3 L/100 km
25.3 mpg US
30.4 mpg UK

Porsche 968 Cabrio 3.0 16V 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
Porsche968 Cabrio3.0 16V
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
6.5 s
Alfa RomeoRZ3.0 i V6
9.3 L/100 km
25.3 mpg US
30.4 mpg UK
7.5 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
Porsche968 Cabrio3.0 16V
167 hp/t
124 kW/t
6.0 kg/hp
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
Alfa RomeoRZ3.0 i V6
152 hp/t
113 kW/t
6.6 kg/hp
9.3 L/100 km
25.3 mpg US
30.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche968 Cabrio3.0 16VAlfa RomeoRZ3.0 i V6
Power
240 hp
179 kW
210 hp
157 kW
Torque
305 Nm
225 lb-ft
245 Nm
181 lb-ft
Acceleration
6.5 s
7.5 s
Top speed
252 km/h
157 mph
Unrestricted
240 km/h149 mph
Restricted
230 km/h143 mph
Lightness
1,440 kg
3,175 lb
1,380 kg
3,042 lb
Fuel consumption
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
9.3 L/100 km
25.3 mpg US
30.4 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
225 L
7.9 cu ft
Length
4,320 mm
170.1 in
Height
1,275 mm
50.2 in
Doors/seats
2 doors
2 seats
Trunk
120 L
4.2 cu ft
Length
4,060 mm
159.8 in
Height
1,300 mm
51.2 in
Range score
841 km
523 mi
753 km
468 mi
Trunk score
225 L
7.9 cu ft
120 L
4.2 cu ft
Power-to-weight score
167 hp/t
124 kW/t
6.0 kg/hp
152 hp/t
113 kW/t
6.6 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
VehiclePorsche 968 Cabrio 3.0 16VAlfa Romeo RZ 3.0 i V6
Consumption8.8 L/100 km26.7 mpg US32.1 mpg UK9.3 L/100 km25.3 mpg US30.4 mpg UK
Cost / 100 km15.40 LC100 km16.28 LC100 km
Cost / 100 mi24.78 LC100 mi26.19 LC100 mi
Annual fuel used1,320 L349 US gal290 UK gal1,395 L369 US gal307 UK gal
Annual fuel cost2,310 LC/year2,441 LC/year

Head-to-head comparisons

Porsche 968 Cabrio 3.0 16V

  • Has 30 hp more
  • Has 60 Nm more
  • Is 1.0 s quicker from 0-100 km/h
  • Has 12 km/h (7 mph) higher top speed
  • Uses 0.5 L/100 km less fuel
  • Has 14 hp/t better power-to-weight
  • Has 88 km (55 mi) more estimated range
  • Has 105 L more trunk volume

Pros

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

Cons

  • Heaviest

Alfa Romeo RZ 3.0 i V6

  • Is 60 kg lighter

Pros

  • Lightest

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 968 Cabrio 3.0 16V
Alfa Romeo RZ 3.0 i V6
Compare selected cars
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