Car comparison

BMW Z8 (E52) 4.9vsAC Ace 4.6 i V8 32V

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

New comparison

BMW Z8 (E52)

4.9

400 hp4941 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible2000-2005
VS

AC Ace

4.6 i V8 32V

326 hp4601 ccGasolineRWDManualNaturally aspiratedCabriolet / convertible1997-2000

Comparison overview

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

Best choices

BMW Z8 (E52) 4.9

  • Quickest 0-100 km/h
    4.7 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    400 hp
    298 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • Best power-to-weight
    241 hp/t
    180 kW/t
    4.2 kg/hp
  • Largest trunk
    203 L
  • Best overall score
    61/100
  • Best performance score
    74/100
  • Best economy score
    68/100
  • Best practicality score
    32/100

AC Ace 4.6 i V8 32V

  • Lightest
    1,510 kg
    3,329 lb
  • Lowest city consumption
    15.1 L/100 km
    15.6 mpg US
    18.7 mpg UK
  • Lowest highway consumption
    10.5 L/100 km
    22.4 mpg US
    26.9 mpg UK

Specification comparison

Specification comparison
ModelBMWZ8 (E52)4.9ACAce4.6 i V8 32V
Power
400hp298kW
326hp243kW
Torque
500Nm369lb-ft
427Nm315lb-ft
Curb weight
1,660kg3,660lb
1,510kg3,329lb
Gross weight
1,900kg4,189lb
-
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
59.2s99% target: 257 km/h / 160 mph
Calculated
74.2s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.7s
5.7s
0-200 km/h
16.3s
Calculated
20.1s
Calculated
0-60 mph
4.5s
Calculated
5.4s
Calculated
Fuel consumption
14.5L/100 km16.2mpg US19.5mpg UK
-
Fuel consumption city
21.1L/100 km11.1mpg US13.4mpg UK
15.1L/100 km15.6mpg US18.7mpg UK
Fuel consumption highway
10.6L/100 km22.2mpg US26.6mpg UK
10.5L/100 km22.4mpg US26.9mpg UK
Quarter mile
12.8s
Calculated
13.8s
Calculated
Power-to-weight
241hp/t180kW/t109hp/1000 lb
Calculated
216hp/t161kW/t98hp/1000 lb
Calculated
Torque-to-weight
301Nm/t202lb-ft/ton
Calculated
283Nm/t189lb-ft/ton
Calculated
Estimated range
503km313mi
Calculated
-
Displacement
4,941cc302cu in
4,601cc281cu in
Length
4,400mm173in
4,420mm174in
Width
1,830mm72in
1,870mm74in
Height
1,317mm52in
1,300mm51in
Wheelbase
2,505mm99in
2,470mm97in
Front track
1,550mm61in
1,590mm63in
Rear track
1,570mm62in
1,570mm62in
Trunk volume
203L
185L
Max trunk volume-
300L
Doors
2
2
Seats
2
2
Fuel tank
73L
90L

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 Z8 (E52) 4.9AC Ace 4.6 i V8 32VPowerTorque
  • BMW Z8 (E52) 4.9: Power / Torque
  • AC Ace 4.6 i V8 32V: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMWZ8 (E52)4.96,600 rpm3,800 rpm6,850 rpm
ACAce4.6 i V8 32V5,800 rpm4,600 rpm6,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMWZ8 (E52)4.9ACAce4.6 i V8 32V
Acceleration checkpoints
0-60 mph
0-97 km/h
4.5 s
5.4 s
0-100 km/h
0-62 mph
4.7 s
5.7 s
0-200 km/h
0-124 mph
16.3 s
20.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.1 s
2.3 s
330 ft
101 m
5.6 s
6.0 s
1/8 mile
201 m
8.4 s
9.1 s
1000 ft
305 m
10.8 s
11.6 s
1/4 mile
402 m
12.8 s
13.8 s
Trap speed
1/4 mile
402 m
180 km/h
112 mph
169 km/h
105 mph

Power comparison

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

Chart data table
VehicleValue
BMWZ8 (E52)4.9
400 hp
298 kW
ACAce4.6 i V8 32V
326 hp
243 kW

BMW Z8 (E52) 4.9 has 74 hp more than AC Ace 4.6 i V8 32V.

The biggest power difference is between AC Ace 4.6 i V8 32V and BMW Z8 (E52) 4.9: 74 hp (55 kW).

Torque comparison

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

Chart data table
VehicleValue
BMWZ8 (E52)4.9
500 Nm
369 lb-ft
ACAce4.6 i V8 32V
427 Nm
315 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMWZ8 (E52)4.9
1,660 kg
3,660 lb
ACAce4.6 i V8 32V
1,510 kg
3,329 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
BMWZ8 (E52)4.9
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
ACAce4.6 i V8 32V
Unrestricted
260 km/h162 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
BMWZ8 (E52)4.94.7 s
ACAce4.6 i V8 32V5.7 s

The biggest 0-100 km/h difference is between BMW Z8 (E52) 4.9 and AC Ace 4.6 i V8 32V: 1.0 s.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
BMWZ8 (E52)4.9
241 hp/t
180 kW/t
4.1 kg/hp
ACAce4.6 i V8 32V
216 hp/t
161 kW/t
4.6 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMWZ8 (E52)4.9
400 hp
298 kW
4.7 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
ACAce4.6 i V8 32V
326 hp
243 kW
5.7 s
Unrestricted
260 km/h162 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
BMWZ8 (E52)4.9
Power
400 hp
298 kW
0-100 km/h4.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
203 L
7.2 cu ft
Length
4,400 mm
173.2 in
Height
1,317 mm
51.9 in
ACAce4.6 i V8 32V
Power
326 hp
243 kW
0-100 km/h5.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
185 L
6.5 cu ft
Length
4,420 mm
174.0 in
Height
1,300 mm
51.2 in

Detailed score breakdown

Detailed score breakdown
VehicleBMWZ8 (E52)4.9ACAce4.6 i V8 32V
Power
400 hp
298 kW
326 hp
243 kW
Torque
500 Nm
369 lb-ft
427 Nm
315 lb-ft
Acceleration
4.7 s
5.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,660 kg
3,660 lb
1,510 kg
3,329 lb
Fuel consumption
14.5 L/100 km
16.2 mpg US
19.5 mpg UK
-
Practicality
Doors/seats
2 doors
2 seats
Trunk
203 L
7.2 cu ft
Length
4,400 mm
173.2 in
Height
1,317 mm
51.9 in
Doors/seats
2 doors
2 seats
Trunk
185 L
6.5 cu ft
Length
4,420 mm
174.0 in
Height
1,300 mm
51.2 in
Range score
503 km
313 mi
-
Trunk score
203 L
7.2 cu ft
185 L
6.5 cu ft
Power-to-weight score
241 hp/t
180 kW/t
4.2 kg/hp
216 hp/t
161 kW/t
4.6 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
VehicleBMW Z8 (E52) 4.9
Consumption14.5 L/100 km16.2 mpg US19.5 mpg UK
Cost / 100 km25.38 LC100 km
Cost / 100 mi40.84 LC100 mi
Annual fuel used2,175 L575 US gal478 UK gal
Annual fuel cost3,806 LC/year

Head-to-head comparisons

BMW Z8 (E52) 4.9

  • Has 74 hp more
  • Has 73 Nm more
  • Is 1.0 s quicker from 0-100 km/h
  • Has 25 hp/t better power-to-weight
  • Has 18 L more trunk volume

Pros

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

Cons

  • Heaviest

AC Ace 4.6 i V8 32V

  • Is 150 kg lighter

Pros

  • Lightest

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW Z8 (E52) 4.9
AC Ace 4.6 i V8 32V
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BMW Z8 (E52) 4.9 vs AC Ace 4.6 i V8 32V - car comparison - FastVsFaster