Audi Q7: The performance SUV
Posted on Monday, September 12, 2005 @ 20:49:11 BST by audioc

As a third-generation SUV the Audi Q7 has been clearly moulded by the most diverse genes: its styling is not only an expression of sheer sportiness but also evidence of its suitability for challenging terrain. The interior possesses the ambience of the luxury class.

Equally typical of the current Audi formal idiom are the shoulder line and dynamic line, which define the side section. The paintwork option of two contrasting body colours creates a striking look. Eleven basic colours are available, three of which are reserved exclusively for the Q7.

The V-shape of the engine compartment lid sets a dynamic, pioneering trend in front design - a clear indication of the power of the engines.
The shoulder line meets the clearly curved rear end at the top edge of the light units. These are drawn far into the side, emphasising the horizontal design of the area and its low centre of gravity - an impression underlined by the lower part of the tailgate, which likewise reaches far into the side section.
Typical for a vehicle with the genes of an off-roader are the high ground clearance of 200 millimetres (with steel-spring suspension) and the 18-inch wheels (up to 20-inch on request) in the striking, broad curve of the wheel arches. Off-road capability is also enhanced by a distinctly short overhang at the front and the sturdy underride protection at the front and rear.

This ambience serves to reveal the vehicle's kinship with the Audi A6 and A8 saloons. The styling of the controls was clearly inspired by the interior of the A6, as was the driving area with teardrop-shaped frames for the instruments.
The driver-integrating cockpit with the MMI multimedia interface impresses with the ergonomic qualities of Audi's current interior design. Broadly curved and encompassing the upper part of the centre console, the controls and switches form a central operating and information unit designed with the driver in mind.

Numerous storage compartments and up to six cup holders enhance travelling comfort for every passenger. The door pockets are fitted with brackets that will even take 1.5-litre bottles.
The seats in the Q7 are of a new design and ensure excellent comfort on long journeys and a relaxed seated position throughout. Depending on the configuration chosen, up to seven people can be accommodated in three rows of seats. Exceptional head, shoulder and - most notably - leg room is provided by the middle seat row, which can be adjusted forward and back by up to 100 millimetres - here the Q7 offers the maximum in its class.

In addition, a third seat row can be ordered for the Q7, which can accommodate passengers up to 1.60 m tall. Thanks to the easy-entry feature for the rear seats, access to the third row is simple and convenient.
The seats in the second and third row can be folded flat, providing - along with up to 28 different loading configurations - a load area with a maximum volume of 2,035 litres, without the seats having to be removed. If the third seat row is omitted the Q7 has a load area of 775 litres - the best in its class. Even if all three seat rows are in use, a load capacity of 330 litres remains.

Another useful convenience feature is the trailer hitch with detachable, electrically controlled ball end, which is user-friendly and easy to operate if required.
Body and safety
In contrast to earlier SUV generations that were based on a ladder-type chassis frame in the tradition of an all-terrain vehicle, the Audi Q7 has a self-supporting body of lightweight steel construction. The drag coefficient of only 0.34 is the best in its class and is evidence of the aerodynamic qualities of the lines.

In the event of a frontal collision, front sensors behind the radiator grille, in conjunction with other sensors and control units, register a crash within the space of a few thousandths of a second. A few milliseconds later, the belt tensioners are triggered to minimise any possible belt slack.
A belt-force limiter yields at a particular load threshold to allow occupants to sink into the inflated airbag. The full-size front airbag functions in two stages: during the first stage - when it ignites in low-speed accidents - there is less load on the occupant. At higher speeds, the deployment of the second stage fully utilises the protective potential of the front airbag.

Sensors in doors and C-pillars ensure reliable and fast deployment in the event of a side or oblique collision.
The Audi Q7 also affords occupants excellent protection against the consequences of a rear-end collision. It already meets the requirements of future standards, i.e. it withstands an impact against a deformable barrier at 80 km/h and with 70 per cent overlap.
Powertrain

Two power plants are available for the debut of the new SUV with the four-ring badge: a new 4.2 litre V8 with FSI direct petrol injection and the powerful yet quiet 3.0 TDI with common rail system using piezo inline injectors. Other engines will be added to the range.
The V8 is a close relative of the equally large power plant that drives the currently most dynamic Audi, the RS 4. The engine belongs to the present V engine family of the brand, notable for a 90° cylinder angle and a distance of 90 millimetres between cylinders. An additional distinguishing feature: the four camshafts are activated by a two-stage chain drive system at the rear of the engine.

FSI engines deliver more power and dynamism than the conventional power plant with manifold injection - and they do so with outstanding fuel economy. With this remarkable achievement, Audi is opening up a new dimension in the efficiency of standard petrol engines, demonstrating once again the brand's proverbial "Vorsprung durch Technik".

The engine excels not only with its dominant power output (257 kW/350 bhp) at 6,800 rpm and a maximum torque of 440 Nm at 3,500 rpm. The resultant driving performance is excellent, even in the face of tough competition.
In just 7.4 seconds the new Audi Q7 4.2 quattro sprints from zero to 100 km/h and accelerates superbly up to a top speed of 248 km/h. Fuel consumption: only 13.8 litres of premium plus fuel per 100 kilometres (overall / provisional figure).
With piezo injectors: 3.0 TDI

Despite having a torque-converter transmission, this delivers a driving performance that is hard to find elsewhere among SUVs with V6 engines: the speedometer needle passes the 100 km/h mark a mere 9.1 seconds after driving off; the Audi Q7 3.0 TDI quattro goes on to reach a top speed of 216 kilometres per hour.
The V6 four-valve engine with turbocharger technology and map-controlled, cooled exhaust gas recirculation also belongs to Audi's new family of V engines and features a chain drive for camshafts and oil pump.
Mixture preparation is performed by a latest-generation common rail system. It has a high-pressure pump and an injection rail for each cylinder bank, increasing maximum injection pressure to 1,600 bar. The high injection pressure ensures even finer atomisation of the fuel and therefore better mixture preparation and more efficient combustion.

With piezo injectors, the number of injection processes per cycle can be varied almost at will. The Audi TDI development engineers have opted for up to five injection processes for the 3.0 V6: in addition to the main injection process, double pilot injection takes places in the lower speed range and single pilot injection takes places in the medium range. In addition to this, simple post-injection takes place up to around 2,500 rpm and under partial load.

Both engines are combined as standard with a 6-speed tiptronic. This transmission allows the engines' power potential to be converted into a masterly synthesis of dynamism and operating convenience.
New quattro generation
A typical feature of all high-performance Audi vehicles is quattro permanent four-wheel drive - a drive principle that is now celebrating 25 years of success in motor sport and standard production. More than two million Audi quattro models have left the assembly line so far - a number that speaks for itself.

A Torsen differential in the new Audi Q7 - with its longitudinally installed engines - automatically ensures optimum power distribution to all four wheels. The name Torsen is a combination of the terms "torque" and "sensing". The Torsen differential is a self-locking worm gear.
Like the RS 4 most recently, the Q7 is equipped with the latest-generation quattro drive technology. Here the torque split between front and rear axle is 40 : 60. This provides the basis for even more agility - most notably when steering into bends - with practically no perceivable torque steer.

Suspension
The dynamic suspension of the Audi Q7 uses proven sports technology with double wishbones at the front and rear as well as standard steel springs and twin-tube shock absorbers. Long spring travel, a ground clearance of 205 millimetres and robust components take into account the application spectrum of off-road driving. All this results in a driving performance that bears any comparison in respect of dynamism and which sets the standard with regard to ease of control, even on rough terrain.

All Q7 models are equipped as standard with speed-dependent servotronic steering. This helps the driver to manoeuvre in or out of a parking space with minimum steering effort, and its directness and precision ensure good road contact and clear feedback at high speeds.
At the rear axle, the upper wishbone and the spring strut cross bar are made of forged aluminium. The tie bar on the other hand is made of weight-optimised tailored rolled blanks, which thanks to steel plates of varying thicknesses combine low weight with high rigidity for sections under particular loads and strain. All control arms are attached to a subframe which also supports the final drive. The tilted position of the spring and shock absorber unit reduces overall height and creates more room in the vehicle interior.

The Audi Q7 is fitted with 18-inch aluminium wheels as standard, with 235/60 tyres (eight-cylinder: 255/55). As an alternative, other wheels (sizes 18, 19 and 20-inch) can be ordered on request. An optical highlight is unquestionably the new 20-inch 5-arm double-spoke cast aluminium wheel with the bicolor design. If the Q7 is configured as a 5-seater with 18-inch wheels, a full-size spare wheel is available.
Option: adaptive air suspension
The latest-generation adaptive air suspension is available as an option on the Audi Q7. The combination of air suspension and an electronically controlled damping system produces the perfect synthesis of truly sporty handling and supreme ride comfort. An important feature for an automobile with off-road capability: ground clearance is variable between the minimum dynamic level of 165 mm and a maximum of 240 mm (lift mode).

In parallel with this, the trim is lowered by up to 35 millimetres (dynamic mode at high speeds), optimising drag and lateral dynamics at the same time.
Driving dynamics also benefit from the dynamic roll stabilisation function of the adaptive air suspension system - an innovation in the Q7: the system actively responds to steering movements and thus counteracts body roll.
In addition, the driver can activate two additional modes off-road: 25 millimetres higher than at normal level, the Audi Q7 can reach speeds of up to 100 km/h in the off-road mode. In lift mode, with 60 millimetres of extra ground clearance (absolute value 240 mm), even major obstacles can be negotiated. The automatic function's control mechanism intervenes to lower the vehicle's centre of gravity to achieve ride comfort and driving dynamics at higher speeds.

The fully-supporting air springs at the front and rear axle keep the body level constant, regardless of the load situation.
Added to this is a quality specific to this air suspension concept: the occupants benefit from a smooth ride at all times, regardless of the load the vehicle is carrying. The firmness of the springs always adapts to the weight of the vehicle.
All driving modes and height levels can be read off the MMI screen. The ride height also appears in the central driver information display.
New ESP generation

Important for other road users: if the driver brakes hard in extreme situations the ESP warns following traffic accordingly by switching on the hazard warning lights. If the driver activates the off-road mode with the ESP button, the traction of the Q7 is substantially enhanced by means of modified control settings.

Large vehicles are not infrequently used to tow trailers - with a trailer weight of up to 3,500 kg the Q7 is clearly destined to be used this way.
With this is mind, another function is an indispensable safety feature - the trailer stabilisation system. Often at cruising speed, and even when driving straight ahead, minor lateral movements build up, causing the trailer to sway dangerously as a result. The ESP trailer stabilisation function identifies this situation and effectively stabilises the outfit by means of automatic brake intervention.
Equipment: high tech for safety and comfort

adaptive cruise control with collision warning system
A new generation of the radar-assisted distance control system, adaptive cruise control plus, is being introduced in the new Audi Q7. As an extension of conventional adaptive cruise control, the system now controls distance and speed from 0 to 200 km/h. It is therefore able to brake the vehicle to a standstill behind the vehicle ahead. The benefits of this sensitive control function - particularly in slow-moving traffic - are quite clear.

Audi development engineers have deliberately designed the system, in respect of possible acceleration and deceleration, as a convenience system.

The collision warning system is being introduced for the first time on the Q7. It uses the sensors of the adaptive cruise control function and has a range of up to 180 metres. If there is the risk of a collision with the car in front, the system alerts the driver in two stages: first a warning tone is issued, with an optical signal appearing on the instrument panel at the same time. If the driver does not react, the system triggers a clearly noticeable warning jolt, produced by a fast build-up of pressure in the brake system. The purpose of the jolt is to draw the driver's attention immediately to what is happening on the road in front of the vehicle.

Audi side assist
Incorporating radar sensors, Audi side assist monitors the area next to and behind the vehicle to warn the driver - additionally to the image in the rear-view mirror - of any approaching vehicles. The driver is alerted by a warning light on the outside mirror, followed by an additional acoustic signal should he/she nevertheless switch on the direction indicator.

MMI and Infotainment
Still a benchmark with regard to intuitive operation - the integrated user interface MMI, the multi-media interface in the new Audi Q7. Already established in the Audi A8 and A6, the infotainment platform is notable for its ease of operation, perfect positioning and consistent inherent operating logic.
The system is available in three configurations: the standard MMI basic, the MMI basic plus and the MMI.
Even the standard equipment version of the Q7 is equipped with MMI basic comprising a terminal, monochrome display as well as an integrated radio and single-disc CD player. Music output is via a 4x20-Watt amplifier and four speakers in the doors. As well as the radio system and broadcasting of traffic information, numerous vehicle functions such as the air conditioning and interior light configuration can be controlled by the MMI basic.

In the optional version with the full range of features, the MMI comes with a 7 inch colour monitor, a double tuner and a 6-disc CD changer. On request the MMI can be rounded off with a DVD navigation system.
A further extra, which can be combined with the MMI and the MMI basic plus, is the all-new BOSE surround sound system.
Cornering lights and daytime running lights
Already featured on the A8 and A6, some highly innovative technology will be found under the clear-glass covers of the Q7's front headlights: the combination of the dynamic cornering light system adaptive light, energy-saving daytime running lights and xenon plus technology - an offer unequalled by competitors.
The headlights of the new Q7 are available in three versions: standard free-form halogen lights, xenon plus lights with daytime running lights or additionally in conjunction with adaptive light dynamic cornering lights. The ellipsoidal module for dipped and main-beam headlights swivels according to the angle of each road and bend. This distinctly improves illumination of the road in the direction of travel and of the side area, making predictive driving even simpler.
Parking system plus and advanced
Three parking assistance systems are available as options on the Audi Q7. The Audi parking system aids the driver when approaching obstacles, using four sensors at the rear and an acoustic warning signal. The parking system plus monitors both front and rear areas around the vehicle and alerts the driver to a potential collision during parking manoeuvres also by means of a bar chart in the MMI display.
In addition to these options, the Audi parking system advanced features a rear-view camera; the images captured appear on the MMI screen. Parking lines projected on to the camera image provide extra support for the driver when manoeuvring into parking spaces. Audi is introducing this option in its programme for the production launch of the Q7.
Access and authorisation system: advanced key
Drivers of the new Audi Q7 with an automatic transmission will seldom have to use their car key: "advanced key" is the name of the optional system that functions as an electronic access and authorisation system.
The key - which can remain safely in the pocket - has an electronic pulse transmitter and its signal is registered and verified by a proximity sensor in the door. If identified, the doors are unlocked as soon as the driver pulls the door handle.
The central locking system can be activated and deactivated at every door on the vehicle. The driver merely has to have the key on his/her person within a range of around 1.5 metres of the vehicle and pull the door handle. If required, the passengers can also open the door first. Via the MMI you can choose whether the central locking should release only the door opened manually or whether all doors should be unlocked.
Before starting out, the steering and ignition are released electronically with advanced key, through wireless remote control. Provided the driver has the key on his or her person inside the vehicle, the steering is released by lightly pressing the starter button. At the same time, the ignition is turned on and the electronic immobiliser released.
The engine is then started by pressing the starter switch in the centre console once again. For safety reasons the automatic selector lever must be in position P or N, while the driver operates the foot brake at the same time.
Air and light: open sky system and 4-zone climate control
The open sky system, available as an option, gives all occupants a feeling of generous spaciousness and ensures an excellent supply of fresh air, along with a high level of versatility. The large panorama glass sunroof extends in three segments, reaching virtually from the front roof edge to the third seat row. The front segment of the 1.6 square metre open sky system can be raised and moved to the rear electrically. The rear segment is designed as a tilting roof.
Two roller blinds provide sun protection whenever required. Each element can be operated by occupants seated in the first and second row. The acoustic qualities of the open sky system are also exemplary; the drumming noise typical of many a sliding/tilting roof during a journey remains absent in the Audi Q7 thanks to precision work undertaken in the wind tunnel.
The well-being of all occupants can be enhanced with automatic high-comfort 2 zone climate control. In addition to separate air distribution and temperature control for the driver and front passenger, it also offers draught-free indirect ventilation and an air quality sensor. Other features: the residual heat function, automatic air recirculation and additional ventilation at the rear via the door pillars.
In addition, the Audi Q7 can be ordered with automatic high-comfort 4-zone climate control, an option that provides individual climate zones for rear-seat passengers. Temperature, air distribution and air volume can be adjusted separately for the left and right side. On top of this, an additional evaporator - located behind the luggage area trim - ensures consistent and steady cooling, even in the third row of seats.