Bmw Z4 Roadster officially unveiled

Article by Christian A., on August 26, 2010

Finally! The waiting is over because today the 2009 Bmw Z4 Roadster was officially unveiled! The new vehicle which will make its debut at the 2009 North American International Auto Show on January 11, has returned more powerful and more stylish than ever before.

The new Z4 offers a unique combination of elegance and supreme comfort but also a new two-piece lightweight hardtop which is a premiere at the German manufacturer, this vehicle being the first which uses this system.

As you can see the new coupe-cabriolet follows the same line of the classic design of course, with new and modern flowing lines. The front comes with the new grille seen at the new 2009 Bmw 7-Series, with new air intake and the dual round headlights.

The new roadster comes with two engines: the 3.0-liter twin turbo (Z4 sDrive35i) capable to develop 300 hp at 5,800 rpm sprinting from 0-60 mph (96 km/h) in just 5.1 seconds (optional seven-speed double clutch sport automatic transmission in 5.0 seconds) while the top speed is limited to 130 mph or 210 km/h (150 mph or 241 km/h when equipped with the optional Sport Package).

The 3.0-liter turbo (Z4 sDrive30i) capable to develop 255 hp at 6,600 rpm providing a sprint from 0-60 mph (96 km/h) in just 5.6 seconds (with optional sport automatic in 6.0 seconds) while the top speed is electronically limited to 130 mph or 210 km/h (150 mph or 241 km/h when equipped with the optional Sport Package).

Compared to the previous version, the BMW Z4 is clearly larger as its length is 148 mm longer at 4,239 mm, while it is wider by 9 mm with the width now at 1,790 mm. What this simply means is that the Z4 offers increased space for the interior and better luggage capacity.

If the roof is up, one can see that the headroom is increased by 44 mm, with the shoulder room offering an additional 20 mm, and the elbow room giving an extra 43 mm. Meanwhile, the Z4 has its storage facility placed at the back of the driver and the passenger seats, a first.

The single compartment extends through the whole width of the interior and provides space of 15.5 liters. It even has a netting order to ensure that the items stored are kept steady. Complementing this additional space is the Storage Package that while offered as an option can increase even further the storage capacity.

The Z4 will also have for the first time the brand’s very own iDrive. There is also the BMW Professional Multimedia Navigation system which has a hard disc drive that can store music files as large as 12 Gb. It even has the BMW ConnectedDrive functionality.

The system even has eight Favorite buttons that can be programmed as system shortcuts. The roof has been constructed in a way that the boot can offer storage capacity between 180 liters to 310 liters, enough space to even store golf clubs.

There is even a hatch in the middle of the two seats to stow a second set of golf clubs. Customers will be glad to know that for the first time, they will be allowed to specify the through-loading system if they want additional storage for their Z4.

Another improvement to the Z4 is the driver visibility. Four electric windows result in a larger glasshouse and thus the all-round visibility is increased by 14% while side visibility is raised by as much as 40%. The Retractable Hard-Top roof has a rear window of glass, improving visibility even further by 52%.

Press Release


The latest in BMW's long and successful roadster family has been revealed. The all-new BMW Z4 will go on sale in the UK in May 2009 and features a host of innovations never before showcased during BMW's 75 years of roadster heritage.

The BMW Z4 is the first to come with a two-piece, electro-hydraulically operated Retractable Hard-Top roof that can be raised or lowered in 20 seconds. The new roadster is also the first vehicle to be offered with Adaptive M Suspension. Electronically controlled dampers offer three different configurations and lower the ride height by up to 10mm for a more dynamic drive. By way of comparison, the Sport+ setting of the new car is comparable to the outgoing BMW Z4's standard ride comfort level.

The standard Drive Dynamic Control function is another first and allows the driver to alter, depending on model specification, the throttle and steering response, level of ride comfort, Dynamic Stability Control response and, on automatic or Double Clutch Transmission cars, gear change times.

Powering the new BMW Z4 is a choice of three six-cylinder powerplants. The range flagship is the current International Engine of the Year-winning 3.0-litre twin-turbocharged engine. Producing 306hp at 5,800rpm, the BMW Z4 sDrive35i powers its way from zero to 62mph in 5.2 seconds (5.1 seconds for a Double Clutch Transmission-equipped car) and on to an electronically-limited top speed of 155mph. The twin-turbocharged 2,979cc engine with high-precision direct injection technology produces 400Nm of torque from just 1,300rpm for effortless in-gear acceleration. The strong performance credentials are matched in terms of economy and emissions. The BMW Z4 sDrive35i records a combined consumption figure of 30.1mpg (31.4mpg) and CO2 emissions of 219g/km (210g/km).

Joining this model in the launch line-up are theBMW Z4 sDrive23i and the Z4 sDrive30i. Both use the same magnesium aluminium alloy engine with Double VANOS and VALVETRONIC technology, but with varying capacities. The 2,497cc entry-level BMW Z4 sDrive23i produces 204hp at 6,400rpm and 250Nm of torque from 2,750rpm. This equates to a zero to 62mph time of 6.6 seconds (7.3 seconds for the Sport Automatic) and a top speed of 151mph (149mph). In contrast the Z4 sDrive23i is capable of 33.2mpg (34.4mpg) on the combined cycle and CO2 emissions of 199g/km (192g/km) respectively.

All three six-cylinder powerplants surpass the latest strict EU5 emissions standards.

The BMW Z4 sDrive30i comes with a 2,996cc powerplant offering 258hp at 6,600rpm and 310Nm of torque from 2,600rpm. The six-cylinder engine records a zero to 62mph time of 5.8 seconds (6.1 seconds for the Sports Automatic) and an electronically-limited top speed of 155mph. Like the BMW Z4 sDrive23i, the Z4 sDrive30i posts impressive combined consumption and CO2 emissions figures, recording 33.2mpg (34.0mpg) and 199g/km (195g/km). Transmitting the power to the road in all three Z4s is a six-speed manual gearbox as standard. Customers of the BMW Z4 sDrive23i and the Z4 sDrive30i who prefer the characteristics of an automatic can specify a six-speed Sport Automatic transmission featuring gear change paddles on the steering wheel. Buyers of the BMW Z4 sDrive35i can choose the more advanced seven-speed Double Clutch Transmission, again with gear shift paddles located on the steering wheel.


All of the latest BMW Z4s come as standard with facets of BMW's award-winning EfficientDynamics programme. Technologies that improve engine performance while enhancing economy and cutting emissions include Brake Energy Regeneration, Electric Power Steering with Servotronic, Reduced Rolling Resistance Tyres, on-demand control of the engine's ancillaries and Optimum Shift Indicator on manual transmission cars. The BMW Z4 also adheres to a philosophy of lightweight construction with the front suspension and subframe being largely made from aluminium.

Enhanced packaging

The new BMW Z4 is larger than its predecessor measuring 148mm longer at 4,239mm and 9mm wider at 1,790mm, and this results in greater interior space and luggage capacity. With the roof up, headroom has been increased by 44mm while the greater car width and design enhancements have led to 20mm more shoulder room and 43mm more elbow room.

For the first time on a BMW Z4 there is a bespoke storage facility located behind the driver and passenger seats. This approximate 15.5-litre single compartment stretches the width of the car's interior and features netting to hold the contents in place. It can be complemented by an optional Storage Package that adds further stowage capacity. BMW's latest generation of iDrive makes its first appearance on a Z4. The BMW Professional Multimedia Navigation system features a hard disc drive capable of 12Gb of audio file storage and BMW ConnectedDrive functionality. The system also comes with eight programmable Favourite buttons as system shortcuts.

The unique roof construction of the BMW Z4 creates a boot that varies in capacity from 180 to 310 litres - large enough to stow a full set of golf clubs. For the first time on a BMW Z4 customers can specify a through-loading system for additional storage capability. A hatch between the two seats permits a second full set of golf clubs to be carried.

Driver visibility in the BMW Z4 has also been improved. All round visibility is up by 14 per cent while, courtesy of the four electric windows creating a larger glasshouse, side visibility is up 40 per cent. The Retractable Hard-Top roof features a glass rear window and this too improves visibility by 52 per cent.

Technical specifications

BMW Z4 sDrive23i
Power: 204 hp
Torque: 250 Nm
0-100 km/h: 6.6 s
Top Speed: 243 km/h
Fuel Consumption: 33.2 mpg
CO2 Emissions: 199 g/km
Price: 35,900 EUR
BMW Z4 sDrive30i
Power: 258 hp
Torque: 310 Nm
0-100 km/h: 5.8 s
Top Speed: 250 km/h
Fuel Consumption: 33.2 mpg
CO2 Emissions: 199 g/km
Price: 42,900 EUR
BMW Z4 sDrive35i
Power: 306 hp
Torque: 400 Nm
0-100 km/h: 5.2 s
Top Speed: 250 km/h
Fuel Consumption: 30.1 mpg
CO2 Emissions: 210 g/km
Price: 47,450 EUR

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