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Audi is once again producing a five-cylinder
engine – and a very special one at that.
Arriving at dealerships this summer, the TT RS
has a turbocharged 2.5-liter engine with
direct gasoline injection; it produces 250 kW
(340 bhp) and 450 Nm (331.90 lb.-ft.) of
torque. The blazing five-cylinder engine
enables the TT RS to perform extraordinary
feats. In conjunction with quattro permanent
all-wheel drive and a high-performance
chassis, the engine makes the compact Audi TT
RS a top-notch sports car – available as a
coupé or roadster.
Sporty five-cylinder gasoline engines have a
long legacy at Audi. The most famous is
arguably the turbocharged 2.1-liter engine in
the Audi quattro. The first version, which was
launched in 1980, offered an impressive 147 kW
(200 bhp). And the Sport quattro from 1984,
directly inspired by motorsport, delivered a
whopping 225 kW (306 bhp). For 25 years,
turbochargers and quattro have been a dynamic
formula for success.
Audi has resumed using this recipe. Designed
from scratch, the five-cylinder engine
combines a turbocharger with FSI direct
gasoline injection to elevate the TT RS to a
high-performance sports car. The TFSI delivers
250 kW (340 bhp) from a displacement of 2,480
cc (151.34 cu in): a specific output of 100.8
kW (137.1 bhp) per liter.
The power-to-weight ratio is also outstanding.
In the case of the Coupé, which weighs in at a
mere 1,450 kilograms (3,196.70 pounds), the
power-to-weight ratio is just 4.3 kilograms
per bhp. The Roadster has a weight of 1,510
kilograms (3,328.98 pounds) and a
power-to-weight ratio of 4.4 kilograms per bhp
– thanks to its extremely lightweight and
largely aluminum body constructed as per the
Audi Space Frame principle.
The TT RS Coupé rockets from 0 to 100 km/h (0
to 62.14 mph) in 4.6 seconds; the Roadster
needs just a tenth of a second longer. The
limited top speed of 250 km/h (155.34 mph) is
merely the official figure for both versions;
as an option, Audi can increase it to 280 km/h
(173.98 mph).
Almost even more impressive is the aggressive
pulling power. The maximum torque of 450 Nm
(331.90 lb.-ft.) is always available between
1,600 and 5,300 rpm. In addition, the TT RS
overtakes without the slightest effort. Last
but not least, its engine makes passengers’
skin tingle time and again thanks to its
speedy and powerful response, its inspiring
free-revving character, and its unmistakably
guttural tailpipes: five-cylinder classical
music by Audi!
Compact and Lightweight: The Five-cylinder
TFSI
As an uncompromising sports-car engine, the
2.5-liter TFSI is ultra-compact. Just 49
centimeters (19.29 inches) in length, it is
ideally suited for transverse installation in
the TT RS. And its weight of just 183
kilograms (403.45 pounds) also sets a record.
The crankcase is made of vermicular-graphite
cast iron. This high-tech material unites the
utmost in strength with low weight; it has
otherwise only been used for the large TDI
engines from Audi. Perfectly placed
reinforcements enhance the block’s loadability.
The lightweight cylinder head, the pistons,
and the connecting rod are lightweight as well
as high-strength.
The ultra-powerful five-cylinder engine is
extremely fuel-efficient, requiring an average
of just 9.2 liters/100 km [25.57 mpg] as
regards the Coupé (Roadster: 9.5 l/100 km
[24.76 mpg]). Switchable flaps in the intake
manifold mix the incoming air in a calculated
configuration. Injected at a pressure as high
as 120 bar by the common-rail system, the
gasoline swirls intensely in the combustion
chamber – which in turn cools the walls. This
subsequently facilitates a compression ratio
of 10.0:1, which is very high for a
turbocharged engine. Both of the adjustable
camshafts, controlled via chains, also enhance
charging efficiency with respect to the
air-fuel mixture.
The large turbocharger generates up to 1.2 bar
of boost pressure. The intercooler, fed air
ideally by the lower segment of the single
frame radiator grille, reduces the temperature
of compressed air by over 80 percent at full
load.
When an Audi TT RS driver pushes the standard
Sport button on the center tunnel, a flap
installed in the left exhaust tailpipe renders
the exhaust noise even more robust and intense
while boosting engine responsiveness. An
optional Sport exhaust system is available
with matt black tailpipe trims and sound flap.
For Purists: The Driveline
The Audi TT RS is the first classic sports car
in the Audi RS family. Like the RS 4 and the
RS 6, the Audi TT RS was developed by quattro
GmbH as a pure, no-holds-barred driving
machine. A new six-speed manual transmission
conveys the engine’s tremendous power, and
permits easy and precise operation thanks to a
specially designed shift lever boasting
particularly short shift travel. The
transmission’s defining characteristics are a
high efficiency ratio and a sportily narrow
spread of the gear ratios.
The Audi TT RS features quattro permanent
all-wheel drive as standard equipment. Its
heart lies at the rear axle: an electronically
controlled, hydraulic multi-plate clutch. If a
situation calls for it, the clutch redirects a
majority of the torque input from the front
wheels to the rear wheels.
Within milliseconds, a powerful electrical
pump in conjunction with an accumulator
presses together the clutch’s plates via
hydraulic pressure. Additions to the quattro
powertrain include a constant velocity joint
before the propeller shaft and a compact
rear-axle differential – both are heavy-duty
components.
The quattro drivetrain grants the Audi TT RS
outstanding traction, fascinating dynamics,
and superb stability. Winding rural routes or
some laps around a racetrack allow the
superior handling to shine. The precise and
responsive steering, the instantaneous
reactions of the chassis, the neutrality at
the cornering limit, the grip while exiting a
curve, and – time and again – the engine’s
thrilling power: every mile in an Audi TT RS
exudes the distilled essence of sportiness.
High-tech Excellence from Audi: Chassis and
Body
The chassis of the Audi TT RS builds on the
cutting-edge foundation of the base TT design.
The four-link rear suspension, which handles
longitudinal and lateral forces separately,
plays a crucial role. The electromechanical
steering is highly efficient and the power
steering adjusts to the vehicle’s speed. With
aluminum in the front and sheet steel in the
back, the body’s innovative mixture of
materials results in a well-balanced axle-load
distribution, excellent crash safety, and the
outstanding rigidity which lays the
cornerstone for the car’s precise handling.
The standard sports chassis, which lowers the
body by 10 millimeters (0.39 inches), features
tightly tuned springs and shock absorbers. The
optional Audi magnetic ride adaptive damping
system allows the driver to select one of two
modes for the shock absorbers by simply
pushing the Sport button. Dynamic mode enables
the TT RS to hug the road; Comfort mode
provides a pleasantly balanced ride perfect
for long journeys.
The sportiest version in the TT model line
boasts 18-inch wheels fitted with 245/45
tires. They are complemented by mighty
ventilated disc brakes, which measure 370
millimeters (14.57 inches) in diameter at the
front and 310 millimeters (12.20 inches) at
the rear. So that heat dissipates quickly, the
front friction rings are perforated. They, in
turn, are connected by hollow pins to the
aluminum brake discs, which are encircled by
black four-piston brake calipers made of
aluminum and bearing RS logos.
The Electronic Stabilization Program (ESP) can
be switched off partially or entirely. In
Sport mode, the engine does not intervene to
monitor traction and, correspondingly, the
brakes engage later than otherwise. In the
second mode, the ESP is fully deactivated.
The Face of Power: The Exterior
At just 4.20 meters (13.78 feet) in length,
the vigorously compact Audi TT RS hints at its
explosive potential from the very first
glimpse. The front spoiler tapers downward
into a splitter, reminiscent of a racing car.
The large and squared air inlets have
diamond-shaped inserts. And the high-gloss
black single frame grille with a frame in matt
aluminum look and the TT RS badge bear the
same styling. The xenon plus headlights with
LED daytime running lights notify faraway
drivers that an Audi TT RS is approaching.
The sides of the vehicle are accentuated by
large wheels in 5 twin-spoke design, vigorous
side sills, and exterior-mirror casings in
matt aluminum look. At the tail end, the two
large oval exhaust tailpipes – spaced apart –
are encircled by a diffuser insert. Here, too,
is a TT RS badge. A stationary rear spoiler is
standard, though customers can opt for one
which automatically extends and retracts.
Thanks to a drag coefficient of just 0.3, the
2+2-seat coupé and the two-seat roadster glide
effortlessly through the wind. Audi offers the
TT RS in eight colors. Among them are four
exclusive options: Daytona Gray, pearl effect;
Mugello Blue, pearl effect; Sepang Blue, pearl
effect; and Suzuka Gray, metallic. The
Roadster’s soft top comes in black or dark
gray.
Exclusive Character: Interior and Equipment
Packages
The dynamic exterior of the Audi TT RS is
matched by the interior. The leather
multifunction sports steering wheel has an
especially thick rim, is flat-bottomed, and is
covered with perforated leather. Integrated in
the instrument panel, the driver information
system can display boost pressure and oil
temperature as well as a lap timer for
chronicling feats at the racetrack. The door
handles consist of two slim strips – typical
of Audi RS models. An automatic
climate-control system and the concert sound
system are standard, as are an
electrohydraulic soft top and an electric wind
deflector for the Roadster.
The entire interior is black. The heated
sports seats feature an Alcantara/leather
combination with silver contrasting stitching
and embossed TT RS logos in the front
backrests. Additional badges and logos appear
on the steering wheel, in the rev counter, and
on the door sill trims. The inlays are made
from brushed aluminum. Floor mats feature
silver piping trim; footrests and pedals are
in aluminum look.
Audi offers TT RS customers a diverse range of
optional equipment: variably styled wheels
measuring 18, 19 or 20 inches in diameter;
bucket seats with folding backrests; seat
upholstery in Silk Nappa leather with
perforations or Fine Nappa leather with
special TT perforations; inlays with Ibis
White or Phantom Black paint finish as well as
matt aluminum-look inlays for the exterior. In
addition, there are high-tech navigation and
multimedia systems available. Sales of the
Audi TT RS begin in March; deliveries are
scheduled to begin this summer.
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