Car comparison

Porsche Boxster (981) Spyder 3.8vsBristol Bullet 4.8 V8

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

New comparison

Porsche Boxster (981)

Spyder 3.8

375 hp3800 ccGasolineRWDManualNaturally aspiratedRoadster2015-2016

Bristol Bullet

4.8 V8

374 hp4799 ccGasolineRWDAutomaticNaturally aspiratedRoadster2017-present

Comparison overview

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

Porsche Boxster (981) Spyder 3.8

Fastest top speed
300 km/h
186 mph Unrestricted
290 km/h
180 mph Restricted
Most powerful
375 hp
280 kW
Best overall score
62/100
Best performance score
77/100
Best economy score
80/100
Best practicality score
31/100

Bristol Bullet 4.8 V8

Quickest 0-100 km/h
3.8 s
Highest torque
502 Nm
370 lb-ft
Lightest
1,100 kg
2,425 lb
Best power-to-weight
340 hp/t
254 kW/t
2.9 kg/hp

Specification comparison

Specification comparison
Model	PorscheBoxster (981)Spyder 3.8	BristolBullet4.8 V8
Power	375hp280kW	374hp279kW
Torque	420Nm310lb-ft	502Nm370lb-ft
Curb weight	1,315kg2,899lb	1,100kg2,425lb
Gross weight	1,650kg3,638lb	1,250kg2,756lb
Top speed	Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph Calculated	249 km/h 155 mph
To 99% top speed	61.8s99% target: 297 km/h / 185 mph Calculated	37.2s99% target: 247 km/h / 153 mph Calculated
0-100 km/h	4.5s	3.8s
0-200 km/h	13.2s Calculated	12.6s Calculated
0-60 mph	4.3s Calculated	3.6s Calculated
Fuel consumption	9.9L/100 km23.8mpg US28.5mpg UK	-
Fuel consumption city	14.2L/100 km16.6mpg US19.9mpg UK	-
Fuel consumption highway	7.5L/100 km31.4mpg US37.7mpg UK	-
Quarter mile	12.4s Calculated	11.8s Calculated
Power-to-weight	285hp/t213kW/t129hp/1000 lb Calculated	340hp/t254kW/t154hp/1000 lb Calculated
Torque-to-weight	319Nm/t214lb-ft/ton Calculated	456Nm/t305lb-ft/ton Calculated
Estimated range	545km339mi Calculated	-
Displacement	3,800cc232cu in	4,799cc293cu in
Length	4,414mm174in	4,200mm165in
Width	1,801mm71in	1,860mm73in
Height	1,262mm50in	1,200mm47in
Wheelbase	2,475mm97in	2,553mm101in
Front track	1,526mm60in	-
Rear track	1,540mm61in	-
Ground clearance	106mm4in	-
Trunk volume	280L	-
Doors	2	2
Seats	2	2
Fuel tank	54L	55L

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.

Porsche Boxster (981) Spyder 3.8Bristol Bullet 4.8 V8PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
PorscheBoxster (981)Spyder 3.8	6,700 rpm	4,750-6,000 rpm	6,950 rpm
BristolBullet4.8 V8	6,300 rpm	3,400 rpm	6,550 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	PorscheBoxster (981)Spyder 3.8	BristolBullet4.8 V8
	Acceleration checkpoints
0-60 mph 0-97 km/h	4.3 s	3.6 s
0-100 km/h 0-62 mph	4.5 s	3.8 s
0-200 km/h 0-124 mph	13.2 s	12.6 s
Top speed	Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph Likely limited	249 km/h 155 mph
	Drag race simulation
60 ft 18 m	2.2 s	2.0 s
330 ft 101 m	5.5 s	5.2 s
1/8 mile 201 m	8.2 s	7.7 s
1000 ft 305 m	10.5 s	9.9 s
1/4 mile 402 m	12.4 s	11.8 s
Trap speed 1/4 mile 402 m	194 km/h 120 mph	195 km/h 121 mph

Power comparison

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

Chart data table
Vehicle	Value
PorscheBoxster (981)Spyder 3.8	375 hp 280 kW
BristolBullet4.8 V8	374 hp 279 kW

Porsche Boxster (981) Spyder 3.8 has 1 hp more than Bristol Bullet 4.8 V8.

The biggest power difference is between Bristol Bullet 4.8 V8 and Porsche Boxster (981) Spyder 3.8: 1 hp (1 kW).

Torque comparison

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

Chart data table
Vehicle	Value
PorscheBoxster (981)Spyder 3.8	420 Nm 310 lb-ft
BristolBullet4.8 V8	502 Nm 370 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
PorscheBoxster (981)Spyder 3.8	1,315 kg 2,899 lb
BristolBullet4.8 V8	1,100 kg 2,425 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
PorscheBoxster (981)Spyder 3.8	Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph
BristolBullet4.8 V8	249 km/h 155 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
PorscheBoxster (981)Spyder 3.8	4.5 s
BristolBullet4.8 V8	3.8 s

Although Porsche Boxster (981) Spyder 3.8 has more power, Bristol Bullet 4.8 V8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Bristol Bullet 4.8 V8 and Porsche Boxster (981) Spyder 3.8: 0.7 s.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
PorscheBoxster (981)Spyder 3.8	285 hp/t 213 kW/t 3.5 kg/hp
BristolBullet4.8 V8	340 hp/t 254 kW/t 2.9 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
PorscheBoxster (981)Spyder 3.8	375 hp 280 kW	4.5 s	Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph
BristolBullet4.8 V8	374 hp 279 kW	3.8 s	249 km/h 155 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

PorscheBoxster (981)Spyder 3.8

Power	375 hp 280 kW
0-100 km/h	4.5 s
Top speed Unrestricted 300 km/h186 mph Restricted 290 km/h180 mph

Doors/seats	2 doors 2 seats
Trunk	280 L 9.9 cu ft
Length	4,414 mm 173.8 in
Height	1,262 mm 49.7 in

BristolBullet4.8 V8

Power	374 hp 279 kW
0-100 km/h	3.8 s
Top speed 249 km/h 155 mph

Doors/seats	2 doors 2 seats
Trunk	-
Length	4,200 mm 165.4 in
Height	1,200 mm 47.2 in

Detailed score breakdown

Vehicle

PorscheBoxster (981)Spyder 3.8

BristolBullet4.8 V8

Power

375 hp

280 kW

374 hp

279 kW

Torque

420 Nm

310 lb-ft

502 Nm

370 lb-ft

Acceleration

4.5 s

3.8 s

Top speed

Unrestricted

300 km/h186 mph

Restricted

290 km/h180 mph

249 km/h

155 mph

Lightness

1,315 kg

2,899 lb

1,100 kg

2,425 lb

Fuel consumption

9.9 L/100 km

23.8 mpg US

28.5 mpg UK

Practicality

Doors/seats	2 doors 2 seats
Trunk	280 L 9.9 cu ft
Length	4,414 mm 173.8 in
Height	1,262 mm 49.7 in

Doors/seats	2 doors 2 seats
Trunk	-
Length	4,200 mm 165.4 in
Height	1,200 mm 47.2 in

Range score

545 km

339 mi

Trunk score

280 L

9.9 cu ft

Power-to-weight score

285 hp/t

213 kW/t

3.5 kg/hp

340 hp/t

254 kW/t

2.9 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	Porsche Boxster (981) Spyder 3.8
Consumption	9.9 L/100 km23.8 mpg US28.5 mpg UK
Cost / 100 km	17.33 LC100 km
Cost / 100 mi	27.88 LC100 mi
Annual fuel used	1,485 L392 US gal327 UK gal
Annual fuel cost	2,599 LC/year