← BMW Z4 generations

MODIFICATION

BMW Z4 2.5 AT Specs — First Generation Restyling

Loading the Z4 stops at its tightest gap, so a boot opening narrower than the space behind it sets the real limit on what fits.

1 generation, restyling · Roadster

2006–2008

2.5 AT

Gasoline · Automatic · RWD

At a glance

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Specifications

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Performance & powertrain

Top speed
?

The highest speed a vehicle can sustain under manufacturer test conditions. Some cars are electronically limited below their mechanical potential. Glossary entry

229 km/h
Engine type
Gasoline
Transmission
Automatic
Type of boost
?

A turbocharger or supercharger compresses the air entering the engine so a smaller engine can produce more power. Naturally aspirated engines draw air without a compressor. Glossary entry

No
Type of drive
?

Which wheels receive power: front-wheel drive, rear-wheel drive or all-wheel drive. All-wheel drive can send power to every wheel for extra traction. Glossary entry

RWD
Bore and stroke
?

The diameter of a cylinder (bore) and the distance the piston travels inside it (stroke). Together they determine the displacement of the engine. Glossary entry

82 × 78.8 mm
Engine capacity
?

The total volume swept by all pistons inside the cylinders, usually stated in cubic centimetres or litres. Larger displacement often means more power but higher consumption. Glossary entry

2497 cm³
Engine location
Front, longitudinal
Number of gears
?

How many fixed forward ratios a gearbox offers. More gears can improve economy and refinement; continuously variable transmissions have no fixed steps. Glossary entry

6
Maximum power
?

A unit of engine or motor output. One metric horsepower is about 0.735 kilowatts. Peak power is normally reached at high engine speed. Glossary entry

177 hp
Maximum power, kw
?

A unit of engine or motor output. One metric horsepower is about 0.735 kilowatts. Peak power is normally reached at high engine speed. Glossary entry

130 kW
Compression ratio
?

The ratio between the largest and smallest volume of a cylinder as the piston moves. Higher ratios improve efficiency but may require higher-octane fuel. Glossary entry

11
Maximum power rpm
5800 rpm
Maximum torque N⋅m
230 N⋅m
Maximum torque rpm
3500 rpm
Acceleration to 100
?

The time a vehicle needs to reach 100 km/h from a standstill, a common shorthand for overall performance. Glossary entry

Not provided
Engine power system
Distributed injection (multi-point)
Number of cylinders
4
Valves per cylinder
?

The number of intake and exhaust valves in each cylinder. Four valves per cylinder is common and helps the engine breathe at higher speeds. Glossary entry

6
Cylinder arrangement
Inline
Maximum power ICE
Not provided
Maximum power ICE
Not provided

Energy & emissions

ECO class
Not provided
Battery power
Not provided
Fuel grade
98
Mild Hybrid
?

A car with a small electric motor and battery that assist the combustion engine and recover braking energy but cannot drive on electricity alone. Glossary entry

Not provided
Battery type
Not provided
CO2 emissions
?

The amount of carbon dioxide released per kilometre under a standardised test. Lower figures usually go hand in hand with lower fuel consumption. Glossary entry

Not provided
Full charge home
Not provided
Power consumption
Not provided
Fuel tank capacity
55 l
Full public charging time
Not provided
Driving range, maximum
?

The distance an electric or plug-in vehicle can travel on a full charge under a stated test cycle. Temperature, speed and load change the real result. Glossary entry

Not provided
Driving range, minimum
?

The distance an electric or plug-in vehicle can travel on a full charge under a stated test cycle. Temperature, speed and load change the real result. Glossary entry

Not provided
Fuel consumption city
Not provided
Average consumption
9.8 l
Fuel consumption highway
Not provided

Dimensions & body

Doors number
2
Number of seats
2
Width
1781 mm
Height
1299 mm
Length
4091 mm
Body type
Roadster
Wheelbase
?

The distance between the centres of the front and rear wheels. A longer wheelbase usually gives more cabin space and a calmer ride; a shorter one helps agility and parking. Glossary entry

2495 mm
U-turn diameter
Not provided
Depth of the ford to be crossed
Not provided
Body style
Drop-top
Rear track width
?

The distance between the centres of the two wheels on the same axle. A wider track generally improves stability in corners. Glossary entry

1523 mm
Trunk volume max
Not provided
Trunk volume min
260 l
Front track width
?

The distance between the centres of the two wheels on the same axle. A wider track generally improves stability in corners. Glossary entry

1473 mm
Max weight
1570 kg
Curb weight
?

The weight of the vehicle with all standard equipment and fluids but without passengers or cargo. Glossary entry

1275 kg
Ground clearance, maximum
?

The gap between the lowest point of the underbody and the road. More clearance helps on rough roads and steep driveway ramps. Glossary entry

Not provided
Ground clearance, minimum
?

The gap between the lowest point of the underbody and the road. More clearance helps on rough roads and steep driveway ramps. Glossary entry

123 mm

Identity & configuration

Body code
E85
Vehicle class
S
Body designation
E85
Right-hand drive
No

Additional specifications

Stop
2008-08-31
Start
2006-01-01
Wheel size
Not provided
Rear brakes
Disc
Front brakes
Ventilated disc
Rear suspension
Independent, spring
Front suspension
Independent, spring

Not provided means the source has no value. Zero remains zero. Units are shown as supplied; range test cycles are only stated when known.

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Engine and Transmission

Gasoline engines spin their crankshaft in plain bearings, where rotation drags oil into a wedge and pressurises it. That wedge lifts the journal clear, so the shaft floats rather than rubbing its shell.

Drivetrain and Everyday Driving

Rear-wheel drive delivers torque to the rear tyres, but a turning wheel only moves the car if the road pushes back against the tread. Without that reaction the wheel rotates and the body stays put.

Body and Practicality

A rigid long item fixes its own diagonal: it must find one straight line clear of the roadster's arches and folded roof. Small parcels of equal volume reshape themselves to whatever corners remain.