Car comparison

BMW Z4 Coupe (E86) M 3.2vsBMW 6 Series (E63) 650i

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

New comparison

BMW Z4 Coupe (E86)

M 3.2

343 hp3246 ccGasolineRWDManualNaturally aspiratedCoupe2006-2008
VS

BMW 6 Series (E63)

650i

367 hp4799 ccGasolineRWDAutomaticNaturally aspiratedCoupe2005-2007

Comparison overview

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

Best choices

BMW 6 Series (E63) 650i

  • Most powerful
    367 hp
    274 kW
  • Highest torque
    490 Nm
    361 lb-ft
  • Lowest combined fuel consumption
    11.1 L/100 km
    21.2 mpg US
    25.4 mpg UK
  • Lowest city consumption
    16.3 L/100 km
    14.4 mpg US
    17.3 mpg UK
  • Lowest highway consumption
    8.1 L/100 km
    29.0 mpg US
    34.9 mpg UK
  • Best estimated range
    631 km
    392 mi
  • Largest trunk
    450 L
  • Best overall score
    65/100
  • Best performance score
    71/100
  • Best economy score
    77/100
  • Best practicality score
    53/100

BMW Z4 Coupe (E86) M 3.2

  • Quickest 0-100 km/h
    5.0 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Lightest
    1,425 kg
    3,142 lb
  • Best power-to-weight
    241 hp/t
    179 kW/t
    4.2 kg/hp

Specification comparison

Specification comparison
ModelBMWZ4 Coupe (E86)M 3.2BMW6 Series (E63)650i
Power
343hp256kW
367hp274kW
Torque
365Nm269lb-ft
490Nm361lb-ft
Curb weight
1,425kg3,142lb
1,645kg3,627lb
Gross weight
1,730kg3,814lb
2,095kg4,619lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
62.0s99% target: 262 km/h / 163 mph
Calculated
72.3s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
5.0s
5.5s
0-200 km/h
16.7s
Calculated
18.9s
Calculated
0-60 mph
4.8s
Calculated
5.2s
Calculated
Fuel consumption
12.1L/100 km19.4mpg US23.3mpg UK
11.1L/100 km21.2mpg US25.4mpg UK
Fuel consumption city
18.2L/100 km12.9mpg US15.5mpg UK
16.3L/100 km14.4mpg US17.3mpg UK
Fuel consumption highway
8.6L/100 km27.4mpg US32.8mpg UK
8.1L/100 km29mpg US34.9mpg UK
Quarter mile
13.1s
Calculated
13.6s
Calculated
Power-to-weight
241hp/t179kW/t109hp/1000 lb
Calculated
223hp/t166kW/t101hp/1000 lb
Calculated
Torque-to-weight
256Nm/t171lb-ft/ton
Calculated
298Nm/t199lb-ft/ton
Calculated
Estimated range
455km282mi
Calculated
631km392mi
Calculated
Displacement
3,246cc198cu in
4,799cc293cu in
Length
4,113mm162in
4,820mm190in
Width
1,781mm70in
1,855mm73in
Height
1,271mm50in
1,373mm54in
Wheelbase
2,497mm98in
2,780mm109in
Front track
1,486mm59in
1,558mm61in
Rear track
1,516mm60in
1,596mm63in
Trunk volume
245L
450L
Max trunk volume
300L
-
Doors
2
2
Seats
2
4
Fuel tank
55L
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.

BMW Z4 Coupe (E86) M 3.2BMW 6 Series (E63) 650iPowerTorque
  • BMW Z4 Coupe (E86) M 3.2: Power / Torque
  • BMW 6 Series (E63) 650i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ4 Coupe (E86)M 3.27,900 rpm4,900 rpm8,150 rpm
BMW6 Series (E63)650i6,300 rpm3,400 rpm6,550 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWZ4 Coupe (E86)M 3.2BMW6 Series (E63)650i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.8 s
5.2 s
0-100 km/h
0-62 mph
5.0 s
5.5 s
0-200 km/h
0-124 mph
16.7 s
18.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.3 s
330 ft
101 m
5.8 s
6.0 s
1/8 mile
201 m
8.6 s
8.9 s
1000 ft
305 m
11.0 s
11.5 s
1/4 mile
402 m
13.1 s
13.6 s
Trap speed
1/4 mile
402 m
179 km/h
111 mph
172 km/h
107 mph

Power comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)M 3.2
343 hp
256 kW
BMW6 Series (E63)650i
367 hp
274 kW

BMW 6 Series (E63) 650i has 24 hp more than BMW Z4 Coupe (E86) M 3.2.

The biggest power difference is between BMW Z4 Coupe (E86) M 3.2 and BMW 6 Series (E63) 650i: 24 hp (18 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)M 3.2
365 Nm
269 lb-ft
BMW6 Series (E63)650i
490 Nm
361 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)M 3.2
1,425 kg
3,142 lb
BMW6 Series (E63)650i
1,645 kg
3,627 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)M 3.2
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW6 Series (E63)650i
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)M 3.25.0 s
BMW6 Series (E63)650i5.5 s

Although BMW 6 Series (E63) 650i has more power, BMW Z4 Coupe (E86) M 3.2 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between BMW Z4 Coupe (E86) M 3.2 and BMW 6 Series (E63) 650i: 0.5 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)M 3.2
12.1 L/100 km
19.4 mpg US
23.3 mpg UK
BMW6 Series (E63)650i
11.1 L/100 km
21.2 mpg US
25.4 mpg UK

The biggest fuel consumption difference is between BMW 6 Series (E63) 650i and BMW Z4 Coupe (E86) M 3.2: 1.0 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
BMWZ4 Coupe (E86)M 3.2
241 hp/t
179 kW/t
4.2 kg/hp
BMW6 Series (E63)650i
223 hp/t
166 kW/t
4.5 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMWZ4 Coupe (E86)M 3.2
455 km
282 mi
BMW6 Series (E63)650i
631 km
392 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWZ4 Coupe (E86)M 3.2
343 hp
256 kW
5.0 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
BMW6 Series (E63)650i
367 hp
274 kW
5.5 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 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
BMWZ4 Coupe (E86)M 3.2
Power
343 hp
256 kW
0-100 km/h5.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
245 L
8.7 cu ft
Length
4,113 mm
161.9 in
Height
1,271 mm
50.0 in
BMW6 Series (E63)650i
Power
367 hp
274 kW
0-100 km/h5.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,373 mm
54.1 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
BMWZ4 Coupe (E86)M 3.2
Power
343 hp
256 kW
0-100 km/h5.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
12.1 L/100 km
19.4 mpg US
23.3 mpg UK
BMW6 Series (E63)650i
Power
367 hp
274 kW
0-100 km/h5.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
11.1 L/100 km
21.2 mpg US
25.4 mpg UK

BMW 6 Series (E63) 650i 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
BMWZ4 Coupe (E86)M 3.2
12.1 L/100 km
19.4 mpg US
23.3 mpg UK
5.0 s
BMW6 Series (E63)650i
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
5.5 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
BMWZ4 Coupe (E86)M 3.2
241 hp/t
179 kW/t
4.2 kg/hp
12.1 L/100 km
19.4 mpg US
23.3 mpg UK
BMW6 Series (E63)650i
223 hp/t
166 kW/t
4.5 kg/hp
11.1 L/100 km
21.2 mpg US
25.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ4 Coupe (E86)M 3.2BMW6 Series (E63)650i
Power
343 hp
256 kW
367 hp
274 kW
Torque
365 Nm
269 lb-ft
490 Nm
361 lb-ft
Acceleration
5.0 s
5.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,425 kg
3,142 lb
1,645 kg
3,627 lb
Fuel consumption
12.1 L/100 km
19.4 mpg US
23.3 mpg UK
11.1 L/100 km
21.2 mpg US
25.4 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
245 L
8.7 cu ft
Length
4,113 mm
161.9 in
Height
1,271 mm
50.0 in
Doors/seats
2 doors
4 seats
Trunk
450 L
15.9 cu ft
Length
4,820 mm
189.8 in
Height
1,373 mm
54.1 in
Range score
455 km
282 mi
631 km
392 mi
Trunk score
245 L
8.7 cu ft
450 L
15.9 cu ft
Power-to-weight score
241 hp/t
179 kW/t
4.2 kg/hp
223 hp/t
166 kW/t
4.5 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
VehicleBMW Z4 Coupe (E86) M 3.2BMW 6 Series (E63) 650i
Consumption12.1 L/100 km19.4 mpg US23.3 mpg UK11.1 L/100 km21.2 mpg US25.4 mpg UK
Cost / 100 km21.18 LC100 km19.43 LC100 km
Cost / 100 mi34.08 LC100 mi31.26 LC100 mi
Annual fuel used1,815 L479 US gal399 UK gal1,665 L440 US gal366 UK gal
Annual fuel cost3,176 LC/year2,914 LC/year

Head-to-head comparisons

BMW Z4 Coupe (E86) M 3.2

  • Is 220 kg lighter
  • Is 0.5 s quicker from 0-100 km/h
  • Has 18 hp/t better power-to-weight

Pros

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

Cons

  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk

BMW 6 Series (E63) 650i

  • Has 24 hp more
  • Has 125 Nm more
  • Uses 1.0 L/100 km less fuel
  • Has 176 km (109 mi) more estimated range
  • Has 205 L more trunk volume

Pros

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

Cons

  • Slowest 0-100 km/h
  • Heaviest

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW Z4 Coupe (E86) M 3.2
BMW 6 Series (E63) 650i
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