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Audi TT Sportback concept at 2014 Paris Motor Show

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Four-cylinder TFSI with 294 kW

The Audi TT Sportback concept captivates with the power of 294 kW that flows through a seven-speed S tronic to the quattro permanent all wheel drive. The sprint from 0 to 100 km/h takes just 3.9 seconds.
The sophisticated suspension and the low center of gravity ensure dynamic handling, and the body integrates a number of lightweight aluminum components. A laser spot that complements the LED high beam is featured in each of the headlights – this innovation from Audi significantly boosts safety when driving in the dark.

The Audi virtual cockpit dominates the elegantly designed interior of the show car, with the 12.3 inch screen replacing the conventional instruments and the MMI® monitor. The screen provides top-quality graphics and enables the driver to choose between multiple display levels. In the MMI® terminal, the rotary push-button features a touchpad that is used to enter characters and gestures as with a smartphone. The operation of the climate control has been relocated to the air vents.
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The exterior design

The five-door Audi TT Sportback concept is 4.47 meters long, 1.89 meters wide, and 1.38 meters high, featuring a wheelbase of 2.63 meters. Compared with the new production TT, it is 29 centimeters (11.4 in) longer, 6 centimeters (2.4 in) wider and has a 12 centimeter (4.7 in) larger wheelbase; its height is 3 centimeters (1.2 in) less than that of the new TT.

Featuring Mars red paintwork, the body is a statement of powerful elegance: High-precision lines border athletically domed surfaces, and a flat greenhouse is positioned on a powerful body. The design makes use of the Audi TT’s formal idiom to develop a new sporty and elongated sculpture that is highly taut.
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The interior

The driver and the passengers enter the Audi TT Sportback concept through doors with frameless window panes. The interior fits around them with the precision of a sporty suit. In the interior, the uncompromising sportiness of the Audi TT meets the functionality of a five door sedan. This is underlined by slimline applications on the dashboard and doors, as well as a long center console which continues through the entire interior. Handworked seams run along the center console and top shoulder from the front through to the luggage compartment, lending a sporty elegance to the interior. The headlining also features an elegant contour that accentuates the length of the interior. The super sport seats with the integrated head restraints are sharply contoured and highly adjustable.
There is space for two people in the rear, likewise on individual seats with integrated head restraints. They are separated by functional storage compartments and a comfortable armrest. The backrests can be folded down so that large objects can also be stowed in the luggage compartment beneath the tailgate.

The sinewy, taut lines created by the Audi designers in the interior of the show car are closely oriented to those of the production TT. When viewed from the top, the instrument panel resembles the wing of an airplane and the five round air vents are reminiscent of jet engines.
The controls for the seat heating, air recirculation, temperature, distribution and strength of the air flow are located on their axes. The omission of the classic air conditioning control panel and the MMI® monitor has made it possible to design the instrument panel within a sleek and light architecture that is fully focused on the driver. The Audi virtual cockpit, the digital instrument cluster, replaces the conventional physical displays and the central MMI® monitor.
The driver can switch to the 12.3 inch display at multiple levels in order to view top quality graphics. The system is operated via the multifunction steering wheel or the MMI® terminal. The touchpad located on the round rotary push-button is used to enter characters and also processes multiple finger gestures – the driver can zoom in on the map as they would on a smartphone.In keeping with the character of sporty elegance, the interior of the Audi TT Sportback concept is defined by the use of high-quality materials.
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Drivetrain

The 2.0 TFSI® engine in the Audi TT Sportback concept captivates with its performance characteristics: It generates 294 kW at 6,400 rpm, with a specific output of 147 kW per liter of displacement. The four cylinder engine puts 450 Nm of torque on the crankshaft between 2,400 and 6,000 rpm, with over 300 Nm already available at just 1,900 rpm. The high-performance engine limits fuel consumption to an average of 7.0 liters per 100 kilometers. This equates to CO2 emissions of 162 grams per kilometer.

As a member of the Audi EA 888 engine family, there is a comprehensive package of high-end technology on board for the turbocharged direct-injection unit. The camshaft adjustment on the intake and exhaust sides and the Audi valvelift system, which varies the stroke of the exhaust valves in two stages, ensure good filling of the combustion chambers. At part load, indirect injection complements the FSI® direct injection. The exhaust manifold embedded in the cylinder head is an important component of the thermal management. The flow of coolant is managed by a powerful rotary slide module.

In order to generate the high power output, the 2.0 TFSI® has undergone profound modifications, including special aluminum pistons with an integrated cooling channel and a crankshaft made from ultra-high-strength forged steel. The crankcase consists of a new, high-strength casting alloy and the cylinder head has been designed for the increased gas flow rate. The turbocharger has also been redeveloped and builds up a maximum relative boost pressure of 1.8 bar. It contains a mixed flow turbine wheel that is noted for its particularly fast start-up performance.
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Chassis

The suspension also reflects the technological expertise behind the Audi TT Sportback concept. The front suspension is based on a McPherson system; aluminum components reduce the weight of the unsprung chassis masses. The four-link rear suspension can process the longitudinal and transverse forces separately.The large wheels have a 21 inch diameter and a tire format of 255/30. The four brake discs in 18 inch format feature a weight-saving wave design. The Electronic Stabilization Control (ESC) adds the final touch to the handling. A sub-function of the ESC is enabled at the cornering threshold – through minimal application of the brakes at the wheels on the inside of the curve, which are reduced of load, the wheel-selective torque control diverts the drive torque to the wheels on the outside of the curve. For the driver, this means a further boost in terms of neutrality, stability and traction.
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Body

The body plays a leading role in the lightweight construction concept of the Audi TT Sportback concept on the basis of the modular transverse matrix (MQB). The entire front section is made from steel. The passenger compartment floor comprises high-strength, hot-shaped steel components which, thanks to their outstanding strength properties, feature thin walls and are correspondingly light. The compartment’s structure, the outer skin, and the doors and lids are made of the classic Audi semi-finished aluminum products cast node, extruded profile and sheet metal.

With its composite concept, the body represents the latest evolution of the Audi Space Frame (ASF). Its hybrid construction ensures that the show car has a low center of gravity – ideal for sporty driving.