Car comparison

AUDI A4 Cabriolet (B6 8H) 3.0 V6 30VvsAlfa Romeo Spider (939) 2.4 JTDM

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

New comparison

AUDI A4 Cabriolet (B6 8H)

3.0 V6 30V

220 hp2976 ccGasolineAWDManualNaturally aspiratedCabriolet / convertible2003-2005
VS

Alfa Romeo Spider (939)

2.4 JTDM

210 hp2387 ccDieselFWDManualTurbochargedCabriolet / convertible2008-2010

Comparison overview

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

Best choices

Alfa Romeo Spider (939) 2.4 JTDM

  • Highest torque
    400 Nm
    295 lb-ft
  • Lightest
    1,635 kg
    3,605 lb
  • Lowest combined fuel consumption
    6.8 L/100 km
    34.6 mpg US
    41.5 mpg UK
  • Lowest city consumption
    9.2 L/100 km
    25.6 mpg US
    30.7 mpg UK
  • Lowest highway consumption
    5.4 L/100 km
    43.6 mpg US
    52.3 mpg UK
  • Lowest CO2 emissions
    179 g/km
  • Best estimated range
    1,029 km
    640 mi
  • Largest trunk
    253 L
  • Best economy score
    89/100

AUDI A4 Cabriolet (B6 8H) 3.0 V6 30V

  • Quickest 0-100 km/h
    7.9 s
  • Fastest top speed
    241 km/h
    150 mph
  • Most powerful
    220 hp
    164 kW
  • Best power-to-weight
    131 hp/t
    98 kW/t
    7.6 kg/hp
  • Best overall score
    48/100
  • Best performance score
    51/100
  • Best practicality score
    43/100

Specification comparison

Specification comparison
ModelAUDIA4 Cabriolet (B6 8H)3.0 V6 30VAlfa RomeoSpider (939)2.4 JTDM
Power
220hp164kW
210hp157kW
Torque
300Nm221lb-ft
400Nm295lb-ft
Curb weight
1,675kg3,693lb
1,635kg3,605lb
Gross weight
2,155kg4,751lb
1,985kg4,376lb
Top speed
241 km/h
150 mph
231 km/h
144 mph
To 99% top speed
106.0s99% target: 239 km/h / 148 mph
Calculated
110.9s99% target: 229 km/h / 142 mph
Calculated
0-100 km/h
7.9s
8.1s
0-200 km/h
33.4s
Calculated
39.3s
Calculated
0-60 mph
7.5s
Calculated
7.6s
Calculated
Fuel consumption
11.1L/100 km21.2mpg US25.4mpg UK
6.8L/100 km34.6mpg US41.5mpg UK
Fuel consumption city
15.8L/100 km14.9mpg US17.9mpg UK
9.2L/100 km25.6mpg US30.7mpg UK
Fuel consumption highway
8.4L/100 km28mpg US33.6mpg UK
5.4L/100 km43.6mpg US52.3mpg UK
Quarter mile
15.7s
Calculated
15.9s
Calculated
Power-to-weight
131hp/t98kW/t60hp/1000 lb
Calculated
128hp/t96kW/t58hp/1000 lb
Calculated
Torque-to-weight
179Nm/t120lb-ft/ton
Calculated
245Nm/t164lb-ft/ton
Calculated
Estimated range
595km369mi
Calculated
1,029km640mi
Calculated
Displacement
2,976cc182cu in
2,387cc146cu in
Length
4,573mm180in
4,393mm173in
Width
1,778mm70in
1,830mm72in
Height
1,391mm55in
1,318mm52in
Wheelbase
2,654mm104in
2,528mm100in
Front track
1,523mm60in
1,579mm62in
Rear track
1,523mm60in
1,559mm61in
Trunk volume
246L
253L
Max trunk volume
315L
-
Doors
2
2
Seats
4
2
Fuel tank
66L
70L
CO2 emissions
266g/km
179g/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.

AUDI A4 Cabriolet (B6 8H) 3.0 V6 30VAlfa Romeo Spider (939) 2.4 JTDMPowerTorque
  • AUDI A4 Cabriolet (B6 8H) 3.0 V6 30V: Power / Torque
  • Alfa Romeo Spider (939) 2.4 JTDM: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V6,300 rpm3,200 rpm6,550 rpm
Alfa RomeoSpider (939)2.4 JTDM4,000 rpm1,500 rpm4,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA4 Cabriolet (B6 8H)3.0 V6 30VAlfa RomeoSpider (939)2.4 JTDM
Acceleration checkpoints
0-60 mph
0-97 km/h
7.5 s
7.6 s
0-100 km/h
0-62 mph
7.9 s
8.1 s
0-200 km/h
0-124 mph
33.4 s
39.3 s
Top speed
241 km/h
150 mph
231 km/h
144 mph
Drag race simulation
60 ft
18 m
2.5 s
2.5 s
330 ft
101 m
6.8 s
6.8 s
1/8 mile
201 m
10.3 s
10.3 s
1000 ft
305 m
13.2 s
13.3 s
1/4 mile
402 m
15.7 s
15.9 s
Trap speed
1/4 mile
402 m
147 km/h
92 mph
144 km/h
89 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
220 hp
164 kW
Alfa RomeoSpider (939)2.4 JTDM
210 hp
157 kW

AUDI A4 Cabriolet (B6 8H) 3.0 V6 30V has 10 hp more than Alfa Romeo Spider (939) 2.4 JTDM.

The biggest power difference is between Alfa Romeo Spider (939) 2.4 JTDM and AUDI A4 Cabriolet (B6 8H) 3.0 V6 30V: 10 hp (7 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
300 Nm
221 lb-ft
Alfa RomeoSpider (939)2.4 JTDM
400 Nm
295 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
1,675 kg
3,693 lb
Alfa RomeoSpider (939)2.4 JTDM
1,635 kg
3,605 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
241 km/h
150 mph
Alfa RomeoSpider (939)2.4 JTDM
231 km/h
144 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V7.9 s
Alfa RomeoSpider (939)2.4 JTDM8.1 s

The biggest 0-100 km/h difference is between AUDI A4 Cabriolet (B6 8H) 3.0 V6 30V and Alfa Romeo Spider (939) 2.4 JTDM: 0.2 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
Alfa RomeoSpider (939)2.4 JTDM
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

The biggest fuel consumption difference is between Alfa Romeo Spider (939) 2.4 JTDM and AUDI A4 Cabriolet (B6 8H) 3.0 V6 30V: 4.3 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
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
131 hp/t
98 kW/t
7.6 kg/hp
Alfa RomeoSpider (939)2.4 JTDM
128 hp/t
96 kW/t
7.8 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
595 km
369 mi
Alfa RomeoSpider (939)2.4 JTDM
1,029 km
640 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
220 hp
164 kW
7.9 s
241 km/h
150 mph
Alfa RomeoSpider (939)2.4 JTDM
210 hp
157 kW
8.1 s
231 km/h
144 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
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
Power
220 hp
164 kW
0-100 km/h7.9 s
Top speed
241 km/h
150 mph
Doors/seats
2 doors
4 seats
Trunk
246 L
8.7 cu ft
Length
4,573 mm
180.0 in
Height
1,391 mm
54.8 in
Alfa RomeoSpider (939)2.4 JTDM
Power
210 hp
157 kW
0-100 km/h8.1 s
Top speed
231 km/h
144 mph
Doors/seats
2 doors
2 seats
Trunk
253 L
8.9 cu ft
Length
4,393 mm
173.0 in
Height
1,318 mm
51.9 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
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
Power
220 hp
164 kW
0-100 km/h7.9 s
Top speed
241 km/h
150 mph
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
Alfa RomeoSpider (939)2.4 JTDM
Power
210 hp
157 kW
0-100 km/h8.1 s
Top speed
231 km/h
144 mph
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

Alfa Romeo Spider (939) 2.4 JTDM 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
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
7.9 s
Alfa RomeoSpider (939)2.4 JTDM
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
8.1 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
AUDIA4 Cabriolet (B6 8H)3.0 V6 30V
131 hp/t
98 kW/t
7.6 kg/hp
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
Alfa RomeoSpider (939)2.4 JTDM
128 hp/t
96 kW/t
7.8 kg/hp
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA4 Cabriolet (B6 8H)3.0 V6 30VAlfa RomeoSpider (939)2.4 JTDM
Power
220 hp
164 kW
210 hp
157 kW
Torque
300 Nm
221 lb-ft
400 Nm
295 lb-ft
Acceleration
7.9 s
8.1 s
Top speed
241 km/h
150 mph
231 km/h
144 mph
Lightness
1,675 kg
3,693 lb
1,635 kg
3,605 lb
Fuel consumption
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
246 L
8.7 cu ft
Length
4,573 mm
180.0 in
Height
1,391 mm
54.8 in
Doors/seats
2 doors
2 seats
Trunk
253 L
8.9 cu ft
Length
4,393 mm
173.0 in
Height
1,318 mm
51.9 in
Range score
595 km
369 mi
1,029 km
640 mi
CO2 score
266 g/km
179 g/km
Trunk score
246 L
8.7 cu ft
253 L
8.9 cu ft
Power-to-weight score
131 hp/t
98 kW/t
7.6 kg/hp
128 hp/t
96 kW/t
7.8 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
VehicleAUDI A4 Cabriolet (B6 8H) 3.0 V6 30VAlfa Romeo Spider (939) 2.4 JTDM
Consumption11.1 L/100 km21.2 mpg US25.4 mpg UK6.8 L/100 km34.6 mpg US41.5 mpg UK
Cost / 100 km19.43 LC100 km11.90 LC100 km
Cost / 100 mi31.26 LC100 mi19.15 LC100 mi
Annual fuel used1,665 L440 US gal366 UK gal1,020 L269 US gal224 UK gal
Annual fuel cost2,914 LC/year1,785 LC/year

Head-to-head comparisons

AUDI A4 Cabriolet (B6 8H) 3.0 V6 30V

  • Has 10 hp more
  • Is 0.2 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Has 3 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Best power-to-weight ratio

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk
  • Highest CO2 emissions

Alfa Romeo Spider (939) 2.4 JTDM

  • Has 100 Nm more
  • Is 40 kg lighter
  • Uses 4.3 L/100 km less fuel
  • Has 435 km (270 mi) more estimated range
  • Has 7 L more trunk volume
  • Emits 87 g/km less CO2

Pros

  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A4 Cabriolet (B6 8H) 3.0 V6 30V
Alfa Romeo Spider (939) 2.4 JTDM
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2 vehicles selected

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