(from AC Schnitzer
Press Release) Endless driving pleasure with only 99 g CO2
The AC Schnitzer 99d is our
definition of Efficient Performance
The AC Schnitzer 99d
generates only 99g/km CO2 – that's less than any standard BMW
vehicle available at present.
And despite this, driving pleasure is guaranteed thanks to 190 HP /
140 kW. The 99d accelerates from 0 - 100 in an electrifying 6.9 s
and has a top speed of 235 km/h – a vehicle with all the sporting
genes, in fact a true AC Schnitzer. And with a fuel consumption of
just 3.8 litres diesel per 100 km.
So how does this Concept Car by AC Schnitzer manage to achieve such
low figures? AC Schnitzer calls the combination of features
Efficient Performance. "Pleasure is the driving force!“
That applies not only to the BMW engineers but also - and in
particular - to the tuning specialists at AC Schnitzer.
Secret 1: Diesel engine and matching drive train
A diesel engine in a BMW Z4, and the most efficient currently
available from BMW. It comes from the 320d EfficientDynamics
Edition. And of course now the power has been optimised by the
Aachen specialists to 190 HP and 420 Nm torque (standard 320d
EfficientDynamics Edition: 163 HP).
Secret 2: 230 kg weight saving
The elegant lightweight coupé demonstrates what is technically
possible today. The energy source for example is a lightweight
lithium ion battery instead of the usual lead accumulator. The use
of further lightweight materials such as carbon, magnesium and
titanium has achieved further substantial savings in the interior
equipment. So it's lighter than any current standard BMW.
Secret 3: Weight reduction in unsprung mass
35 kg less weight in the parts directly connected to the wheels,
such as wheels, tyres and brakes, leads to a perceptible gain in
agility and driving pleasure. The latest forging techniques using
materials from the aerospace industry guarantee strength and an
unbeatable weight saving. For example, the AC Schnitzer lightweight
4-pot high performance brake system with retraction system for the
front axle, and the lightweight brake discs on the front and rear
axles, ensure the shortest braking distances.
Or the Type VIII
one-piece high-strength forged rims used on the AC Schnitzer 99d.
These weigh in at just 7.9 kg per wheel and are connected to the
vehicle with titanium wheel bolts. Experts say that measures to
reduce the unsprung mass have a benefit of up to four times the
weight saving. This means that in terms of agility, the AC Schnitzer
99d feels like a vehicle which overall weighs 335 kg less.
Secret 4: Special Eco-tyres from Continental
The Continental BLUECO tyres size 225/35*19 were a special concept
development in conjunction with AC Schnitzer. These tyres help
optimise the rolling resistance. The design is a refinement of the
Conti Sport Contact 5P, and allows sporting driving thanks to its
high cornering stability and ZR speed rating of over 240 km/h.
Secret 5: Adaptation of EfficientDynamics
Behind the BMW EfficientDynamics concept lies a technology package
of intelligent measures which significantly reduce fuel consumption
and emissions. These technologies from the BMW 320d were integrated
into the AC Schnitzer 99d: Automatic start-stop, brake energy
recuperation, gear shift display, low-friction lubricants and active
Secret 6: Improved aerodynamics
The bodywork lowered by 30 mm, in conjunction with several AC
Schnitzer carbon aerodynamic components, reduces drag. The AC
Schnitzer racing suspension with adjustable dampers reduces the
residual spring travel to a sporting but still comfortable level,
especially when driving at low speeds.
Secret 7: Reduced friction
Special ceramic wheel bearings achieve a decisive reduction in
friction resistance. In addition, optimised low-friction lubricants
minimise friction. The high performance brake system is fitted with
a special PFC Retraction System which, after each brake process,
retracts the brake pads by 0.1 mm from the brake discs. The wheels
of the AC Schnitzer 99d then turn much more easily.
Secret 8: Driving
Individuality, exclusivity, ultramodern lightweight construction and
over 20 years of experience in refinement have led in the AC
Schnitzer 99d to a vehicle which perfectly combines efficient fuel
consumption and driving pleasure: Efficient Performance by AC
Naturally all safety elements are retained such as ABS, airbags and
ESP. The multimedia world too is not lacking thanks to the Apple
iPhone4 integrated into the vehicle. This gives access to all data
from the on-board computer. So the actual fuel consumption, or for
example the function of the particle filter can be checked. Music,
telephone, navigation, handsfree or internet complete the overall
experience in the AC Schnitzer 99d.
The AC Schnitzer 99d is a concept car not for sale, which was
developed as a technology platform. In the form shown here, the
vehicle would cost € 149,000.00.
The conversions in the fields of brakes, suspension, bodywork,
interior and wheels are part of the accessory range for the BMW Z4
model range. All are TÜV-tested and available from BMW dealers.