Car comparison

Ariel Atom 4 2.0vsBMW Z4 (G29) M40i

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

New comparison

Ariel Atom 4

2.0

320 hp1996 ccGasolineRWDManualTurbochargedRoadster2018-present
VS

BMW Z4 (G29)

M40i

340 hp2998 ccGasolineAWDAutomaticTurbochargedRoadster2018-2022

Comparison overview

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

Best choices

Ariel Atom 4 2.0

  • Quickest 0-100 km/h
    2.8 s
  • Fastest top speed
    280 km/h
    174 mph Unrestricted
    260 km/h
    162 mph Restricted
  • Lightest
    595 kg
    1,312 lb
  • Best power-to-weight
    538 hp/t
    401 kW/t
    1.9 kg/hp
  • Best overall score
    62/100
  • Best performance score
    79/100

BMW Z4 (G29) M40i

  • Most powerful
    340 hp
    254 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • Best economy score
    87/100
  • Best practicality score
    32/100

Specification comparison

Specification comparison
ModelArielAtom 42.0BMWZ4 (G29)M40i
Power
320hp239kW
340hp254kW
Torque
420Nm310lb-ft
500Nm369lb-ft
Curb weight
595kg1,312lb
1,535kg3,384lb
Gross weight-
1,860kg4,101lb
Top speed
Unrestricted
280 km/h174 mph
Restricted
260 km/h162 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
30.7s99% target: 277 km/h / 172 mph
Calculated
57.6s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
2.8s
4.5s
0-200 km/h
8.1s
Calculated
15.2s
Calculated
0-60 mph
2.7s
Calculated
4.3s
Calculated
Fuel consumption-
7.4L/100 km31.8mpg US38.2mpg UK
Fuel consumption city-
9.2L/100 km25.6mpg US30.7mpg UK
Fuel consumption highway-
6.3L/100 km37.3mpg US44.8mpg UK
Quarter mile
10.3s
Calculated
12.6s
Calculated
Power-to-weight
538hp/t401kW/t244hp/1000 lb
Calculated
221hp/t165kW/t100hp/1000 lb
Calculated
Torque-to-weight
706Nm/t472lb-ft/ton
Calculated
326Nm/t218lb-ft/ton
Calculated
Estimated range-
703km437mi
Calculated
Displacement
1,996cc122cu in
2,998cc183cu in
Length
3,520mm139in
4,324mm170in
Width
1,880mm74in
1,864mm73in
Height
1,122mm44in
1,304mm51in
Wheelbase
2,390mm94in
2,470mm97in
Front track
1,600mm63in
1,594mm63in
Rear track
1,615mm64in
1,589mm63in
Ground clearance-
114mm4in
Trunk volume-
281L
Doors-
2
Seats
2
2
Fuel tank
40L
52L
CO2 emissions-
168g/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.

Ariel Atom 4 2.0BMW Z4 (G29) M40iPowerTorque
  • Ariel Atom 4 2.0: Power / Torque
  • BMW Z4 (G29) M40i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
ArielAtom 42.06,500 rpm3,000 rpm6,750 rpm
BMWZ4 (G29)M40i5,000-6,500 rpm1,600-4,500 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricArielAtom 42.0BMWZ4 (G29)M40i
Acceleration checkpoints
0-60 mph
0-97 km/h
2.7 s
4.3 s
0-100 km/h
0-62 mph
2.8 s
4.5 s
0-200 km/h
0-124 mph
8.1 s
15.2 s
Top speed
Unrestricted
280 km/h174 mph
Restricted
260 km/h162 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
1.8 s
2.1 s
330 ft
101 m
4.5 s
5.5 s
1/8 mile
201 m
6.7 s
8.2 s
1000 ft
305 m
8.7 s
10.6 s
1/4 mile
402 m
10.3 s
12.6 s
Trap speed
1/4 mile
402 m
222 km/h
138 mph
184 km/h
114 mph

Power comparison

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

Chart data table
VehicleValue
ArielAtom 42.0
320 hp
239 kW
BMWZ4 (G29)M40i
340 hp
254 kW

BMW Z4 (G29) M40i has 20 hp more than Ariel Atom 4 2.0.

The biggest power difference is between Ariel Atom 4 2.0 and BMW Z4 (G29) M40i: 20 hp (15 kW).

Torque comparison

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

Chart data table
VehicleValue
ArielAtom 42.0
420 Nm
310 lb-ft
BMWZ4 (G29)M40i
500 Nm
369 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
ArielAtom 42.0
595 kg
1,312 lb
BMWZ4 (G29)M40i
1,535 kg
3,384 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
ArielAtom 42.0
Unrestricted
280 km/h174 mph
Restricted
260 km/h162 mph
BMWZ4 (G29)M40i
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
ArielAtom 42.02.8 s
BMWZ4 (G29)M40i4.5 s

Although BMW Z4 (G29) M40i has more power, Ariel Atom 4 2.0 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Ariel Atom 4 2.0 and BMW Z4 (G29) M40i: 1.7 s.

Power-to-weight comparison

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

Chart data table
VehicleValue
ArielAtom 42.0
538 hp/t
401 kW/t
1.9 kg/hp
BMWZ4 (G29)M40i
221 hp/t
165 kW/t
4.5 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
ArielAtom 42.0
320 hp
239 kW
2.8 s
Unrestricted
280 km/h174 mph
Restricted
260 km/h162 mph
BMWZ4 (G29)M40i
340 hp
254 kW
4.5 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
ArielAtom 42.0
Power
320 hp
239 kW
0-100 km/h2.8 s
Top speed
Unrestricted
280 km/h174 mph
Restricted
260 km/h162 mph
Doors/seats2 seats
Trunk-
Length
3,520 mm
138.6 in
Height
1,122 mm
44.2 in
BMWZ4 (G29)M40i
Power
340 hp
254 kW
0-100 km/h4.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
2 seats
Trunk
281 L
9.9 cu ft
Length
4,324 mm
170.2 in
Height
1,304 mm
51.3 in

Detailed score breakdown

Detailed score breakdown
VehicleArielAtom 42.0BMWZ4 (G29)M40i
Power
320 hp
239 kW
340 hp
254 kW
Torque
420 Nm
310 lb-ft
500 Nm
369 lb-ft
Acceleration
2.8 s
4.5 s
Top speed
Unrestricted
280 km/h174 mph
Restricted
260 km/h162 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
595 kg
1,312 lb
1,535 kg
3,384 lb
Fuel consumption
-
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
Practicality
Doors/seats2 seats
Trunk-
Length
3,520 mm
138.6 in
Height
1,122 mm
44.2 in
Doors/seats
2 doors
2 seats
Trunk
281 L
9.9 cu ft
Length
4,324 mm
170.2 in
Height
1,304 mm
51.3 in
Range score
-
703 km
437 mi
CO2 score
-
168 g/km
Trunk score
-
281 L
9.9 cu ft
Power-to-weight score
538 hp/t
401 kW/t
1.9 kg/hp
221 hp/t
165 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 (G29) M40i
Consumption7.4 L/100 km31.8 mpg US38.2 mpg UK
Cost / 100 km12.95 LC100 km
Cost / 100 mi20.84 LC100 mi
Annual fuel used1,110 L293 US gal244 UK gal
Annual fuel cost1,943 LC/year

Head-to-head comparisons

Ariel Atom 4 2.0

  • Is 940 kg lighter
  • Is 1.7 s quicker from 0-100 km/h
  • Has 15 km/h (9 mph) higher top speed
  • Has 316 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

BMW Z4 (G29) M40i

  • Has 20 hp more
  • Has 80 Nm more

Pros

  • Most powerful
  • Highest torque

Cons

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
Ariel Atom 4 2.0
BMW Z4 (G29) M40i
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