Car comparison

BMW 3 Series Convertible (E46) · Facelift 2003 325CivsBMW 3 Series Gran Turismo (F34) 320i

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 Gran Turismo (F34)

320i

184 hp1997 ccGasolineAWDManualTurbocharged2014-2016

Comparison overview

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

BMW 3 Series Gran Turismo (F34) 320i

Highest torque
270 Nm
199 lb-ft
Lightest
1,625 kg
3,583 lb
Lowest combined fuel consumption
7.0 L/100 km
33.6 mpg US
40.4 mpg UK
Lowest city consumption
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
Lowest highway consumption
5.8 L/100 km
40.6 mpg US
48.7 mpg UK
Lowest CO2 emissions
164 g/km
Best estimated range
857 km
533 mi
Largest trunk
520 L
Best overall score
56/100
Best economy score
88/100
Best practicality score
75/100

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
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 Gran Turismo (F34)320i
Power	192hp143kW	184hp137kW
Torque	245Nm181lb-ft	270Nm199lb-ft
Curb weight	1,640kg3,616lb	1,625kg3,583lb
Gross weight	1,985kg4,376lb	2,195kg4,839lb
Top speed	234 km/h 145 mph	227 km/h 141 mph
To 99% top speed	109.3s99% target: 232 km/h / 144 mph Calculated	97.8s99% target: 225 km/h / 140 mph Calculated
0-100 km/h	8.0s	8.0s
0-200 km/h	37.2s Calculated	38.5s Calculated
0-60 mph	7.6s Calculated	7.6s Calculated
Fuel consumption	9.6L/100 km24.5mpg US29.4mpg UK	7L/100 km33.6mpg US40.4mpg UK
Fuel consumption city	13.4L/100 km17.6mpg US21.1mpg UK	9.2L/100 km25.6mpg US30.7mpg UK
Fuel consumption highway	7.3L/100 km32.2mpg US38.7mpg UK	5.8L/100 km40.6mpg US48.7mpg UK
Quarter mile	15.8s Calculated	15.8s Calculated
Power-to-weight	117hp/t87kW/t53hp/1000 lb Calculated	113hp/t84kW/t51hp/1000 lb Calculated
Torque-to-weight	149Nm/t100lb-ft/ton Calculated	166Nm/t111lb-ft/ton Calculated
Estimated range	656km408mi Calculated	857km533mi Calculated
Displacement	2,494cc152cu in	1,997cc122cu in
Length	4,488mm177in	4,824mm190in
Width	1,757mm69in	1,828mm72in
Height	1,372mm54in	1,508mm59in
Wheelbase	2,725mm107in	2,920mm115in
Front track	1,471mm58in	1,541mm61in
Rear track	1,483mm58in	1,586mm62in
Ground clearance	-	165mm6in
Trunk volume	260L	520L
Max trunk volume	300L	1,600L
Doors	2	5
Seats	4	5
Fuel tank	63L	60L
CO2 emissions	229g/km	164g/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 Gran Turismo (F34) 320iPowerTorque

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 Gran Turismo (F34)320i	5,000-6,250 rpm	1,250-4,500 rpm	6,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	BMW3 Series Convertible (E46)Facelift 2003325Ci	BMW3 Series Gran Turismo (F34)320i
	Acceleration checkpoints
0-60 mph 0-97 km/h	7.6 s	7.6 s
0-100 km/h 0-62 mph	8.0 s	8.0 s
0-200 km/h 0-124 mph	37.2 s	38.5 s
Top speed	234 km/h 145 mph	227 km/h 141 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	13.3 s	13.3 s
1/4 mile 402 m	15.8 s	15.8 s
Trap speed 1/4 mile 402 m	145 km/h 90 mph	145 km/h 90 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 Gran Turismo (F34)320i	184 hp 137 kW

BMW 3 Series Convertible (E46) Facelift 2003 325Ci has 8 hp more than BMW 3 Series Gran Turismo (F34) 320i.

The biggest power difference is between BMW 3 Series Gran Turismo (F34) 320i and BMW 3 Series Convertible (E46) Facelift 2003 325Ci: 8 hp (6 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 Gran Turismo (F34)320i	270 Nm 199 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 Gran Turismo (F34)320i	1,625 kg 3,583 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 Gran Turismo (F34)320i	227 km/h 141 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 Gran Turismo (F34)320i	8.0 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 Gran Turismo (F34)320i	7.0 L/100 km 33.6 mpg US 40.4 mpg UK

The biggest fuel consumption difference is between BMW 3 Series Gran Turismo (F34) 320i and BMW 3 Series Convertible (E46) Facelift 2003 325Ci: 2.6 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 Gran Turismo (F34)320i	113 hp/t 84 kW/t 8.8 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 Gran Turismo (F34)320i	857 km 533 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 Gran Turismo (F34)320i	184 hp 137 kW	8.0 s	227 km/h 141 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 Gran Turismo (F34)320i

Power	184 hp 137 kW
0-100 km/h	8.0 s
Top speed 227 km/h 141 mph

Doors/seats	5 doors 5 seats
Trunk	520 L 18.4 cu ft
Length	4,824 mm 189.9 in
Height	1,508 mm 59.4 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 Gran Turismo (F34)320i

Power	184 hp 137 kW
0-100 km/h	8.0 s
Top speed 227 km/h 141 mph

7.0 L/100 km

33.6 mpg US

40.4 mpg UK

BMW 3 Series Gran Turismo (F34) 320i 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 Gran Turismo (F34)320i	7.0 L/100 km 33.6 mpg US 40.4 mpg UK	8.0 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 Gran Turismo (F34)320i	113 hp/t 84 kW/t 8.8 kg/hp	7.0 L/100 km 33.6 mpg US 40.4 mpg UK

Detailed score breakdown

Vehicle

BMW3 Series Convertible (E46)Facelift 2003325Ci

BMW3 Series Gran Turismo (F34)320i

Power

192 hp

143 kW

184 hp

137 kW

Torque

245 Nm

181 lb-ft

270 Nm

199 lb-ft

Acceleration

8.0 s

Top speed

234 km/h

145 mph

227 km/h

141 mph

Lightness

1,640 kg

3,616 lb

1,625 kg

3,583 lb

Fuel consumption

9.6 L/100 km

24.5 mpg US

29.4 mpg UK

7.0 L/100 km

33.6 mpg US

40.4 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	520 L 18.4 cu ft
Length	4,824 mm 189.9 in
Height	1,508 mm 59.4 in

Range score

656 km

408 mi

857 km

533 mi

CO2 score

229 g/km

164 g/km

Trunk score

260 L

9.2 cu ft

520 L

18.4 cu ft

Power-to-weight score

117 hp/t

87 kW/t

8.5 kg/hp

113 hp/t

84 kW/t

8.8 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 3 Series Convertible (E46) Facelift 2003 325Ci	BMW 3 Series Gran Turismo (F34) 320i
Consumption	9.6 L/100 km24.5 mpg US29.4 mpg UK	7 L/100 km33.6 mpg US40.4 mpg UK
Cost / 100 km	16.80 LC100 km	12.25 LC100 km
Cost / 100 mi	27.04 LC100 mi	19.71 LC100 mi
Annual fuel used	1,440 L380 US gal317 UK gal	1,050 L277 US gal231 UK gal
Annual fuel cost	2,520 LC/year	1,838 LC/year