hp @ 5800 rpm
113.3 hp per liter
(from BMW Press
Release) The Top Performer in the Roadster Range: The BMW Z4
classic proportions with modern sportiness, the new BMW Z4 has
reached the top of its market segment almost overnight. And now this
charismatic roadster is entering a new dimension in driving
dynamics, the new BMW Z4 sDrive35is offering an even higher standard
of performance ensured both by the modified straight-six power unit
with BMW Twin Turbo Technology and High Precision Injection, on the
one hand, and by BMW’s seven-speed Sport Automatic with double
clutch operation and the M Sports Package including the adaptive M
Suspension likewise featured as standard, on the other. Appropriate
optimisation in engine technology increases maximum output of the
3.0-litre power unit to 250 kW/340 hp. Peak torque is 450 Newton-metres/332
lb-ft, increasing briefly with the Overboost function to 500 Newton-metres/369
lb-ft. The outstanding power and performance of the BMW Z4
sDrive35is is expressed in particular by the significant increase in
pulling power and muscle to be clearly experienced in all
situations. In conjunction with seven-speed Sport Automatic
featuring double clutch operation, this new top-of-the-range
Roadster accelerates from a
standstill to 100 km/h (62 mph) in just 4.8 seconds.
At 9.0 litres/100
kilometres (equal to 26.1 mpg US) and 210 grams in the EU test
cycle, fuel consumption and CO2 emissions are the same as on the BMW
Z4 sDrive35i with Sport Automatic.
The BMW Z4 sDrive35is is making its world debut at the 2010 North
American International Auto Show (NAIAS) in Detroit. And parallel to
the market launch of this high-performance roadster in spring 2010,
the M Sports Package is being introduced for all further versions of
the BMW Z4.
More air, more boost, more torque,
more driving pleasure.
straight-six power unit already giving the BMW Z4 sDrive35i truly
impressive dynamics and all-round performance is characterised in
particular by its spontaneous and direct response to the gas pedal,
fascinating free-revving performance, and unusually economical use
of fuel for a car in this class.
Now the outstanding
potential of this power unit is being put to even greater use in the
new version of the BMW Roadster, features such as optimised air
supply and increased boost pressure ensuring an even better flow of
power with the same high standard of efficiency.
The combination of BMW
Twin Turbo Technology and High Precision Injection offers a level of
performance a naturally-aspirated power unit would only be able to
provide with a larger number of cylinders and extra displacement,
meaning far higher weight and significantly greater fuel
Instead, the BMW Twin
Turbo power unit uses two small turbochargers which, through their
low inertia, cut in from the start at relatively low engine speeds,
each supplying three cylinders with compressed air. As a result,
power and performance are built up with a level of spontaneity quite
unusual on a turbocharged engine. The turbocharger system developed
for the power unit of the new BMW Z4 sDrive35is maintains a high
boost pressure throughout the entire load range. Peak torque now
increased to 450 Newton-metres or 332 lb-ft comes from a low 1,400
rpm and is maintained consistently all the way to 4,500 rpm. Maximum
output of 250 kW/340 hp, in turn, is delivered at 5,800 rpm.
Overboost function for
particularly dynamic acceleration.
management on the BMW Z4 sDrive35is also allows the use of an
Overboost function briefly increasing engine torque under full load
by another 50 Newton-metres or 37 lb-ft. The peak thus offered of
500 Newton-metres/369 lb-ft gives the car particularly fast, dynamic
and powerful acceleration, the BMW Z4 sDrive35is completing the
sprint from a standstill to 100 km/h (62 mph) in just 4.8 seconds.
Through its particular characteristics, the power unit offers a
particularly intense experience of this supreme performance. The
extra output of the optimized
six-cylinder is maintained consistently throughout all load ranges,
above all under very dynamic driving conditions.
When accelerating in the BMW Z4 sDrive35is, the driver feels the
additional torque and muscle particularly at medium and high engine
speeds. Following the policy of the BMW Group, finally, top speed of
the BMW Z4 sDrive35is is limited electronically to 250 km/h or 155
High Precision Injection: the
efficient way to supreme performance.
The BMW Z4 sDrive35is
offers its outstanding power and performance consistently at all
times. But this does not mean an increase in fuel consumption and
emissions. On the contrary – averaging fuel consumption of 9.0
litres/100 kilometres (equal to 26.1 mpg US) and CO2 emissions of
210 grams per kilometre in the EU test cycle, the new top model
offers the same superiority also in this respect as the BMW Z4
sDrive35i with Sport Automatic.
This unusually good balance of performance and fuel consumption
results from the fundamental design and layout of the six-cylinder
combining BMW Twin Turbo Technology with High Precision Injection.
So once again, the qualities of direct gasoline injection featured
in this engine come out very clearly, piezo-injectors positioned in
the cylinder head between the valves and therefore in the immediate
vicinity of the spark plugs ensuring particularly precise dosage of
fuel and a clean combustion process.
Opening up to the outside, the injectors operate at a pressure of up
to 200 bar, distributing fuel in a conical spray pattern throughout
the entire combustion chamber. A further advantage of such direct
fuel injection is the cooling effect allowing higher compression and
making the combustion process even more efficient.
Through their concept alone, the turbochargers likewise help to
reduce fuel consumption. Since the turbines are made of special
steel particularly resistant to high temperatures and therefore able
to cope with temperatures of more than 1,000° C or 1,830° F, there
is no need for an increased fuel supply with its cooling effect.
Particularly under full load, this ensures a significant advantagein
Further technologies offered as standard by BMW EfficientDynamics
such as Brake Energy Regeneration, EPS Electric Power Steering and
on-demand control and management of ancillary units likewise help to
reduce both fuel consumption and emissions.
Characteristic engine sound
accompanying the dynamic surge of power.
six-cylinder also comes with special features on the engine block
itself in the interest of even greater strength and stiffness. The
exhaust system of the BMW Z4 sDrive35is, in turn, has been developed
specifically for this model, appropriate sound engineering giving
the car a very characteristic and truly impressive sound pattern.
This particular distinction tailored to the BMW Z4 sDrive35is is
ensured by special sound flaps and modifications on the silencers.
The driver and passenger therefore experience powerful acoustic
feedback to their wish for performance, without the sound of the
engine becoming obtrusive, let alone annoying, at any time. So the
sound experience is characterised by a particularly deep rumble with
the focus above all on the low frequency range.
Seven-speed Sport Automatic with a
special control map
and an optimised two-mass flywheel.
The seven-speed Sport
Automatic with double clutch operation featured in the BMW Z4
sDrive35is likewise offers the very best in driving dynamics and
efficiency. A particular highlight in this case is the two-mass
flywheel laid out particularly for an even higher level of power and
performance, offering even greater strength and stability and
naturally handling high engine torque of up to 500 Newton-metres or
369 lb-ft without the slightest problem.
The seven-speed Sport Automatic with double clutch operation shifts
gears without the slightest interruption of torque and engine power,
offering the driver the choice of an automatic gearshift or the
manual selection of gears. The fast and particularly smooth change
of gears ensures unusually harmonious acceleration and serves in
addition to reduce both fuel consumption and emissions.
The control map on the seven-speed Sport Automatic transmission with
double clutch has naturally been tailored to the particular power
and performance of the engine, thus further enhancing the superior
sportiness of the BMW Z4 sDrive35is to an even higher level.
Particularly when shifting gears manually and in conjunction with
the SPORT and SPORT+ modes of Dynamic Driving Control, the
transmission offers a most dynamic experience through modified
gearshift points, optimised selection of gears and an even greater
increase in torque before shifting.
Sport Automatic also comes with a Launch Control function for
maximum performance when accelerating from a standstill.
The Sport Automatic transmission is controlled and masterminded by
an electronic gear selector on the centre console and comes with
gearshift paddles on the steering wheel.
Featured as standard on the BMW Z4
sDrive35is: M Sports Package
and adaptive M Suspension.
The BMW Z4 sDrive35is
also comes as standard with an M Sports Package including the M
Aerodynamics Package and adaptive M Suspension featuring
electronically controlled dampers for even greater agility without
making any concessions in terms of comfort. The M Sports Package
underlines the dynamic character of the car through its
aerodynamically optimised exterior features and customised interior
design. Special 18-inch light-alloy rims in five-spoke design
combined with tyres of different size front and rear round off the
sporting character of the BMW Z4 sDrive35is, with 19-inch
light-alloy rims available an option.
The adaptive M Suspension lowers the entire car by 10 millimetres or
almost 0.4”, ensuring a quick reaction to sudden steering manoeuvres
and superior precision when entering a bend thanks to four
continuously adjustable twin-sleeve gas-pressure dampers with
interacting adjustment of the inbound and rebound strokes. The
central control unit processing data delivered by three
accelerometers and adjusting the four dampers independently of one
another enables the suspension to respond very quickly to even the
slightest change in driving and road conditions. Damper harshness,
in turn, is adjusted by externally fitted valves controlling the
flow of damper fluid, giving the dampers either a harder or softer
set-up in accordance with current conditions and driving
requirements. Reaction time of the system is extremely short, with
the rear dampers being adjusted immediately as soon as the front
wheels run over a hole or bump in the road.
Electric Power Steering on the BMW Z4 sDrive35is features a
particularly sporting and dynamic control map, with the focus on
intense and clear feedback to the driver through the dosage of power
assistance provided by the electric motor. Again, this enables the
driver to enter bends with extreme precision at all engine speeds in
the interest of enhanced performance.
M Sports Package offering a most direct experience of the car’s
dynamic potential – and available as an option also on the other
models in the range.
The exterior and interior features of the M Sports Package coming as
standard on the BMW Z4 sDrive35is raises the dynamic driving
potential of the car to an even higher level and clearly presents
the particular qualities of this model through its looks alone.
Upon introduction of the new top model in the range, the M Sports
Package is also becoming available as an option on the other
versions of BMW’s unique Roadster. The only difference is that
instead of the wheels exclusive to the BMW Z4 sDrive35is, the other
models come with 18-inch M light-alloy wheels on the M Sports
The particular exterior features on the BMW Z4 sDrive35is include a
striking front bumper with a horizontal trim bar in the outer air
intakes finished in matt aluminium, like the bars in the BMW kidney
grille. The slightly twisted contours of these trim bars take up the
spoke design of the light-alloy rims as a further sign of
The rear bumper comes with specially accentuated surrounds on the
exhaust tailpipes as well as a two-piece diffuser again created
specifically for the BMW Z4 sDrive35is, finished at the top in body
colour and featuring a black grained surface at the bottom. The M
Aerodynamics Package included in the optional M Sports Package also
on the other versions of the Z4 Roadster furthermore comes with a
rear bumper insert in Anthracite metallic.
Inside the BMW Z4 sDrive35is, the driving experience is enhanced to
an even higher standard by features such as the M leather steering
wheel with its gearshift paddles, an M footrest and sports seats.
The instrument cluster comes with grey faces on the dials and the
“sDrive35is” model designation in the instrument cluster.
Further features inside the BMW Z4 sDrive35is are the Anthracite-coloured
BMW Individual roof lining, M entry strips, footmats with coloured
piping and the “sDrive35is” model designation, as well as M interior
trim in Aluminium carbon.
The M Sports Package on the other versions of the Z4 Roadster
includes an M gearshift lever knob in leather on the manual gearbox
models. At the same time the range of leather upholstery is being
further enhanced by an additional colour variant marking the launch
of the BMW Z4 sDrive35is: Both the top model and all other versions
of the Z4 Roadster are now also available in Kansas Walnut leather
as yet a further option.
The BMW Z4 sDrive35is comes with a choice of six paintwork colours.
In addition to Alpine White and the metallic colours Titanium
Silver, Sapphire Black, Space Grey and Deep Sea Blue, the Z4
Roadster is now available for the first time in Melbourne Red
Regardless of the colour chosen, the exterior mirror caps on the BMW
Z4 sDrive35is always come in Oxide Silver. Another optical feature
on the top model, finally, is the “sDrive35is” model designation on
the front side panels.