Car comparison

BMW 3 Series Convertible (E46) · Facelift 2003 325CivsBMW 3 Series Touring (G21) 318d

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

New comparison

BMW 3 Series Convertible (E46) · Facelift 2003

325Ci

192 hp2494 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2003-2006

BMW 3 Series Touring (G21)

318d

150 hp1995 ccDieselRWDAutomaticTurbochargedWagon / estate2019-2022

Comparison overview

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

BMW 3 Series Touring (G21) 318d

Highest torque
320 Nm
236 lb-ft
Lowest combined fuel consumption
4.7 L/100 km
50.0 mpg US
60.1 mpg UK
Lowest city consumption
5.2 L/100 km
45.2 mpg US
54.3 mpg UK
Lowest highway consumption
4.4 L/100 km
53.5 mpg US
64.2 mpg UK
Lowest CO2 emissions
123 g/km
Best estimated range
851 km
529 mi
Largest trunk
500 L
Best overall score
56/100
Best economy score
94/100
Best practicality score
84/100

BMW 3 Series Convertible (E46) Facelift 2003 325Ci

Quickest 0-100 km/h
8.0 s
Fastest top speed
234 km/h
145 mph
Most powerful
192 hp
143 kW
Lightest
1,640 kg
3,616 lb
Best power-to-weight
117 hp/t
87 kW/t
8.5 kg/hp
Best performance score
47/100

Specification comparison

Specification comparison
Model	BMW3 Series Convertible (E46)Facelift 2003325Ci	BMW3 Series Touring (G21)318d
Power	192hp143kW	150hp112kW
Torque	245Nm181lb-ft	320Nm236lb-ft
Curb weight	1,640kg3,616lb	1,660kg3,660lb
Gross weight	1,985kg4,376lb	2,180kg4,806lb
Top speed	234 km/h 145 mph	215 km/h 134 mph
To 99% top speed	109.3s99% target: 232 km/h / 144 mph Calculated	78.6s99% target: 213 km/h / 132 mph Calculated
0-100 km/h	8.0s	8.8s
0-200 km/h	37.2s Calculated	43.1s Calculated
0-60 mph	7.6s Calculated	8.4s Calculated
Fuel consumption	9.6L/100 km24.5mpg US29.4mpg UK	4.7L/100 km50mpg US60.1mpg UK
Fuel consumption city	13.4L/100 km17.6mpg US21.1mpg UK	5.2L/100 km45.2mpg US54.3mpg UK
Fuel consumption highway	7.3L/100 km32.2mpg US38.7mpg UK	4.4L/100 km53.5mpg US64.2mpg UK
Quarter mile	15.8s Calculated	16.4s Calculated
Power-to-weight	117hp/t87kW/t53hp/1000 lb Calculated	90hp/t67kW/t41hp/1000 lb Calculated
Torque-to-weight	149Nm/t100lb-ft/ton Calculated	193Nm/t129lb-ft/ton Calculated
Estimated range	656km408mi Calculated	851km529mi Calculated
Displacement	2,494cc152cu in	1,995cc122cu in
Length	4,488mm177in	4,709mm185in
Width	1,757mm69in	1,827mm72in
Height	1,372mm54in	1,440mm57in
Wheelbase	2,725mm107in	2,851mm112in
Front track	1,471mm58in	1,579mm62in
Rear track	1,483mm58in	1,569mm62in
Trunk volume	260L	500L
Max trunk volume	300L	1,510L
Doors	2	5
Seats	4	5
Fuel tank	63L	40L
CO2 emissions	229g/km	123g/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.

BMW 3 Series Convertible (E46) Facelift 2003 325CiBMW 3 Series Touring (G21) 318dPowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
BMW3 Series Convertible (E46)Facelift 2003325Ci	6,000 rpm	3,500 rpm	6,250 rpm
BMW3 Series Touring (G21)318d	4,000 rpm	1,500-3,000 rpm	4,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW3 Series Convertible (E46)Facelift 2003325Ci	BMW3 Series Touring (G21)318d
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.6 s	8.4 s
0-100 km/h 0-62 mph	8.0 s	8.8 s
0-200 km/h 0-124 mph	37.2 s	43.1 s
Top speed	234 km/h 145 mph	215 km/h 134 mph
	Drag race simulation
60 ft 18 m	2.5 s	2.8 s
330 ft 101 m	6.8 s	7.3 s
1/8 mile 201 m	10.3 s	10.8 s
1000 ft 305 m	13.3 s	13.9 s
1/4 mile 402 m	15.8 s	16.4 s
Trap speed 1/4 mile 402 m	145 km/h 90 mph	144 km/h 89 mph

Power comparison

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

Chart data table
Vehicle	Value
BMW3 Series Convertible (E46)Facelift 2003325Ci	192 hp 143 kW
BMW3 Series Touring (G21)318d	150 hp 112 kW

BMW 3 Series Convertible (E46) Facelift 2003 325Ci has 42 hp more than BMW 3 Series Touring (G21) 318d.

The biggest power difference is between BMW 3 Series Touring (G21) 318d and BMW 3 Series Convertible (E46) Facelift 2003 325Ci: 42 hp (31 kW).

Torque comparison

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

Chart data table
Vehicle	Value
BMW3 Series Convertible (E46)Facelift 2003325Ci	245 Nm 181 lb-ft
BMW3 Series Touring (G21)318d	320 Nm 236 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
BMW3 Series Convertible (E46)Facelift 2003325Ci	1,640 kg 3,616 lb
BMW3 Series Touring (G21)318d	1,660 kg 3,660 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
BMW3 Series Convertible (E46)Facelift 2003325Ci	234 km/h 145 mph
BMW3 Series Touring (G21)318d	215 km/h 134 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
BMW3 Series Convertible (E46)Facelift 2003325Ci	8.0 s
BMW3 Series Touring (G21)318d	8.8 s

The biggest 0-100 km/h difference is between BMW 3 Series Convertible (E46) Facelift 2003 325Ci and BMW 3 Series Touring (G21) 318d: 0.8 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
BMW3 Series Convertible (E46)Facelift 2003325Ci	9.6 L/100 km 24.5 mpg US 29.4 mpg UK
BMW3 Series Touring (G21)318d	4.7 L/100 km 50.0 mpg US 60.1 mpg UK

The biggest fuel consumption difference is between BMW 3 Series Touring (G21) 318d and BMW 3 Series Convertible (E46) Facelift 2003 325Ci: 4.9 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
BMW3 Series Convertible (E46)Facelift 2003325Ci	117 hp/t 87 kW/t 8.5 kg/hp
BMW3 Series Touring (G21)318d	90 hp/t 67 kW/t 11.1 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
BMW3 Series Convertible (E46)Facelift 2003325Ci	656 km 408 mi
BMW3 Series Touring (G21)318d	851 km 529 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
BMW3 Series Convertible (E46)Facelift 2003325Ci	192 hp 143 kW	8.0 s	234 km/h 145 mph
BMW3 Series Touring (G21)318d	150 hp 112 kW	8.8 s	215 km/h 134 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

BMW3 Series Convertible (E46)Facelift 2003325Ci

Power	192 hp 143 kW
0-100 km/h	8.0 s
Top speed 234 km/h 145 mph

Doors/seats	2 doors 4 seats
Trunk	260 L 9.2 cu ft
Length	4,488 mm 176.7 in
Height	1,372 mm 54.0 in

BMW3 Series Touring (G21)318d

Power	150 hp 112 kW
0-100 km/h	8.8 s
Top speed 215 km/h 134 mph

Doors/seats	5 doors 5 seats
Trunk	500 L 17.7 cu ft
Length	4,709 mm 185.4 in
Height	1,440 mm 56.7 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

BMW3 Series Convertible (E46)Facelift 2003325Ci

Power	192 hp 143 kW
0-100 km/h	8.0 s
Top speed 234 km/h 145 mph

9.6 L/100 km

24.5 mpg US

29.4 mpg UK

BMW3 Series Touring (G21)318d

Power	150 hp 112 kW
0-100 km/h	8.8 s
Top speed 215 km/h 134 mph

4.7 L/100 km

50.0 mpg US

60.1 mpg UK

BMW 3 Series Convertible (E46) Facelift 2003 325Ci 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
BMW3 Series Convertible (E46)Facelift 2003325Ci	9.6 L/100 km 24.5 mpg US 29.4 mpg UK	8.0 s
BMW3 Series Touring (G21)318d	4.7 L/100 km 50.0 mpg US 60.1 mpg UK	8.8 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
BMW3 Series Convertible (E46)Facelift 2003325Ci	117 hp/t 87 kW/t 8.5 kg/hp	9.6 L/100 km 24.5 mpg US 29.4 mpg UK
BMW3 Series Touring (G21)318d	90 hp/t 67 kW/t 11.1 kg/hp	4.7 L/100 km 50.0 mpg US 60.1 mpg UK

Detailed score breakdown

Vehicle

BMW3 Series Convertible (E46)Facelift 2003325Ci

BMW3 Series Touring (G21)318d

Power

192 hp

143 kW

150 hp

112 kW

Torque

245 Nm

181 lb-ft

320 Nm

236 lb-ft

Acceleration

8.0 s

8.8 s

Top speed

234 km/h

145 mph

215 km/h

134 mph

Lightness

1,640 kg

3,616 lb

1,660 kg

3,660 lb

Fuel consumption

9.6 L/100 km

24.5 mpg US

29.4 mpg UK

4.7 L/100 km

50.0 mpg US

60.1 mpg UK

Practicality

Doors/seats	2 doors 4 seats
Trunk	260 L 9.2 cu ft
Length	4,488 mm 176.7 in
Height	1,372 mm 54.0 in

Doors/seats	5 doors 5 seats
Trunk	500 L 17.7 cu ft
Length	4,709 mm 185.4 in
Height	1,440 mm 56.7 in

Range score

656 km

408 mi

851 km

529 mi

CO2 score

229 g/km

123 g/km

Trunk score

260 L

9.2 cu ft

500 L

17.7 cu ft

Power-to-weight score

117 hp/t

87 kW/t

8.5 kg/hp

90 hp/t

67 kW/t

11.1 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 3 Series Convertible (E46) Facelift 2003 325Ci	BMW 3 Series Touring (G21) 318d
Consumption	9.6 L/100 km24.5 mpg US29.4 mpg UK	4.7 L/100 km50 mpg US60.1 mpg UK
Cost / 100 km	16.80 LC100 km	8.23 LC100 km
Cost / 100 mi	27.04 LC100 mi	13.24 LC100 mi
Annual fuel used	1,440 L380 US gal317 UK gal	705 L186 US gal155 UK gal
Annual fuel cost	2,520 LC/year	1,234 LC/year