The Audi Q7: new engines and eight-speed transmission image

Audi unveiled today the new, with a choice of three new V6 engines and an 8-speed tiptronic transmission.

Engines: a new range
The two gasoline engines, both V6 units but with different power outputs, are new, and so is the second-generation V6 TDI. A mighty V8 diesel completes the range. All the engines for the Q7 combine two technologies: forced induction and direct fuel injection. A high-performance recuperation system that recovers energy during braking is also a standard item with all six- and eight-cylinder engines.

Two versions of the supercharged V6 are available. The basic version develops 200 kW (272 hp) and has a maximum torque of 400 Nm (295.02 lb-ft) over a broad engine-speed range from 2,250 to 4,750 rpm. It accelerates the Q7 in 7.9 seconds from a standing start to 100 km/h (62.14 mph) and gives it a top speed of 222 km/h (137.94 mph), or 225 km/h (139.81 mph) with adaptive air suspension.

The more powerful version of the 3.0 TFSI delivers 245 kW (333 hp) and a torque of 440 Nm (324.53 lb-ft) between 2,900 and 5,300 rpm. 100 km/h (62.14 mph) are reached in 6.9 seconds, with powerful forward progress continuing until 243 km/h (150.99 mph) are reached; with adaptive air suspension the top speed is 245 km/h (152.24 mph).

Compared with the previous engines, the 3.6 FSI and the 4.2 FSI, fuel consumption has been reduced by 1.4 and 2.0 l/100 km – 12 and 16 percent respectively.
The latest 3.0 TDI engine weighs less: 198 kilograms (436.52 lb), a reduction of 20 kg (44.09 lb). A new chain-driven timing gear and a complex cylinder wall machining process have reduced internal friction. The new turbocharger is very responsive, making itself felt as rapid torque buildup. The common rail injection system has also undergone further development: it has a maximum operating pressure of 2,000 bar and can therefore inject fuel in an extremely precise spray pattern.

Audi also offers its customers a second version of the V6 TDI: the 3.0 TDI clean diesel. It already meets the exhaust emission limits laid down in the Euro 6 standard, which does not come into force until 2014, and the tough US regulations as well.

The Q7 4.2 TDI has also had its fuel consumption reduced – from 9.9 (23.76 US mpg) to 9.2 liters per 100 km (25.57 US mpg) – by installing a 2,000-bar fuel injection system and minimizing internal friction. Yet at the same time the V8 diesel, with its unchanged power output of 250 kW (340 hp), delivers more torque than before. It now supplies 800 Nm (590.05 lb-ft) between engine speeds of 1,750 and 2,750 rpm.
Power transmission: eight speeds are standard

Audi has given all six- and eight-cylinder Q7 versions a new automatic transmission. The eight-speed tiptronic lowers fuel consumption by about five percent. It is based on the six-speed unit, but with another friction-clutch shift element added. Being able to shift between eight ratios keeps the jumps in engine speed low: the engine always runs close to its ideal operating point. All gear shifts are fast, flexible and take place extremely smoothly without delay.
Drivers can choose between the D and S programs – or make their own gear shifts at the transmission selector lever or the optional steering-wheel paddles.