Audi A4 (B8)

Audi A4 (B8)

Manufacturer	Audi
Production	2008–present
Assembly	Ingolstadt, Germany Neckarsulm, Germany Aurangabad, India (CKD) Jakarta, Indonesia (Garuda Mataram Motor)
Predecessor	Audi A4 B7
Body style	4-door saloon/sedan, 5-door Avant (estate/wagon)
Layout	Front engine, front-wheel drive / four-wheel drive
Platform	Volkswagen Group B8 (MLB/MLP) platform
Engine	petrol engines: 1.8L I4 TFSI 2.0L I4 TFSI 3.2L V6 FSI diesel engines: 2.0L I4 TDI 2.7L V6 TDI 3.0L V6 TDI
Transmission	6-speed manual 6-speed Tiptronic automatic 7-speed S-Tronic 8-speed multitronic CVT
Wheelbase	2,808 mm (110.6 in) allroad: 2,805 mm (110.4 in) LWB: 2,869 mm (113.0 in)
Length	4,703 mm (185.2 in) allroad: 4,721 mm (185.9 in) LWB: 4,763 mm (187.5 in)
Width	1,826 mm (71.9 in) allroad: 1,841 mm (72.5 in)
Height	1,427 mm (56.2 in) Avant: 1,436 mm (56.5 in) allroad: 1,495 mm (58.9 in) LWB: 1,426 mm (56.1 in)
Related	Audi A5, Audi S4 (B8), Audi Q5

Audi A4 (B8) is the 4th generation of Audi A4. The B8 A4 is built on a variant of the Audi Modular Longitudinal Platform, a platform which is also used in the Audi A5 coupé. Whilst prior A4 chassis were limited in wheelbase due to the relationship between the engine, transmission and front axle, the MLP allows for a reduced front overhang, resulting in a greater wheelbase length without the same increase in overall length. This effectively redistributes the centre of gravity slightly rearwards, improving handling by better balancing vehicle mass between the front and rear axles. The estimated static front:rear weight ratio of the B8 A4 is approximately 55:45, depending on body style and engine. The relocation of the steering rack in front of the axle also improves handling over previous A4 platforms.^{[citation needed]}

The B8 A4 has increased in wheelbase by 160 millimetres (6.3 in) and in length by 117 millimetres (4.6 in) over the prior B7, which has allowed for increased rear seating legroom. Although the overall dimensions have increased, the kerb weight has dropped some 10%. The boot (trunk) has also increased to 480 litres (17.0 cu ft) for the saloon (sedan) version. The A4 Avant will have a maximum capacity of 1,430 L (50.5 cu ft) with the rear seats folded down.

Reception has been mixed, with praise for the Audi A4's increased size, giving it best-in-class rear legroom and trunk space in the compact executive car segment. Its inline-four 2.0 TSFI engine, while efficiently providing plenty of torque, was considered lacking and less refined compared to six-cylinder engines of lighter rivals who posted faster acceleration times. However, the Audi S4 has been well-received for its V6 3.0 TSFI engine's power and efficiency.

Body types

Audi A4 (B8) sedan

Audi B8 A4 Avant

Sedan

Audi released the first official pictures of the B8 series A4 in August 2007, and unveiled the car to the public at the September 2007 Frankfurt Motor Show. Saloon/sedan and Avant (estate/wagon) models are offered.

Avant

The Avant was unveiled to the public at the March 2008 Geneva Motor Show.

A4L

Extended wheelbase Audi A4L 2.0T

The A4L is a long-wheelbase version for the Chinese market, with a 60 mm (2.4 in) longer wheelbase and 50 mm (2.0 in) longer length. The vehicle was unveiled at the 2008 Guangzhou Motor Show. The production version then went on sale in January 2009. Launch models included a 2.0 TFSI with 132 kW (180 hp) and the 3.2 FSI with 195 kW (265 hp).

allroad quattro

The A4 allroad quattro features a wider track, increased ground clearance, quattro permanent four-wheel drive, a distinctive radiator grille, stainless steel underbody guards and roof rails. It is expected to be available in the early summer of 2009. The car was unveiled in 2009 Geneva Motor Show.

Specifications

Body styles

Body	Sedan	Avant	A4L	allroad quattro
Year	2008-	2008-	2009-	2009-
Luggage capacity	480 litres (17.0 cu ft) with the rear seats in the upright position, and 962 L (34.0 cu ft) with the seats folded	490 L (17.3 cu ft) with the rear seats upright, and 1,430 L (50.5 cu ft) with the seats folded	?
Curb weight	1,410 kg (3,109 lb) to 1,690 kg (3,726 lb)	1,470 kg (3,241 lb) to 1,695 kg (3,737 lb)	?

The A4-based convertible models were replaced by the A5/S5 Cabriolet.

Powertrain

The B8 powertrain options comprise of the following engines, transmissions and drivelines: (All United Kingdom specification unless stated otherwise).(for South Africa specification).(for Australia specification).(for New Zealand specification).

Model	Engine code	Years	displacement / type	Power@rpm	Torque@rpm
Petrol engines
1.8 TFSI	CABA/CDHA	2008-	1,798 cc (110 cu in) 16v I4 turbo	160 PS (118 kW; 158 hp) @4500-6200	250 N·m (184 lb·ft) @1500-4500
1.8 TFSI, 1.8 TFSI quattro	CABB/CDHB	2007-	1,798 cc (110 cu in) 16v I4 turbo	160 PS (118 kW; 158 hp) @4500-6200	250 N·m (184 lb·ft) @1500-4500
2.0 TFSI	CDNB	2008-	1,984 cc (121.1 cu in) 16v I4 turbo	180 PS (132 kW; 178 hp) @4000-6000	320 N·m (236 lb·ft) @1500-3900
2.0 TFSI, 2.0 TFSI quattro	CDNC	2008-	1,984 cc (121 cu in) 16v I4 turbo	211 PS (155 kW; 208 hp) @4300-6000	350 N·m (258 lb·ft) @1500-4200
3.2 FSI, 3.2 FSI quattro	CALA	2007-	3,197 cc (195 cu in) 24v V6	265 PS (195 kW; 261 hp) @6500	330 N·m (243 lb·ft) @3000-5000
S4 quattro/3.0 TFSI	CAKA	2009-	2,995 cc (183 cu in) 24v V6 supercharged	333 PS (245 kW; 328 hp) @5500-7000	440 N·m (325 lb·ft) @2900-5300
Diesel engines
2.0 TDI	CAGC	2008-	1,968 cc (120 cu in) 16v I4 turbo	120 PS (88 kW; 118 hp) @4200	290 N·m (214 lb·ft) @1750-2500
2.0 TDI e	CAGB	2009-	1,968 cc (120 cu in) 16v I4 turbo	136 PS (100 kW; 134 hp) @4200	320 N·m (236 lb·ft) @1750-2500
2.0 TDI, 2.0 TDI quattro	CAGA	2007-	1,968 cc (120 cu in) 16v I4 variable geometry turbo	143 PS (105 kW; 141 hp) @4200	320 N·m (236 lb·ft) @1750-2500
2.0 TDI, 2.0 TDI quattro	CAHA	2008-	1,968 cc (120 cu in) 16v I4 variable geometry turbo	170 PS (125 kW; 168 hp) @4200	350 N·m (258 lb·ft) @1750-2500
2.7 TDI	CAMA/CGKA	2007-	2,698 cc (165 cu in) 24v V6 turbo	190 PS (140 kW; 187 hp) @3500-4400	400 N·m (295 lb·ft) @1400-3250
3.0 TDI quattro	CAPA/CCWA	2007-	2,967 cc (181 cu in) 24v V6 turbo	240 PS (177 kW; 237 hp) @4000-4400	500 N·m (369 lb·ft) @1500-3000

The quattro permanent four-wheel drive system uses the latest Torsen T-3 centre differential, with a default 40:60 front to rear asymmetric torque distribution ratio (used first on the B7 RS4) as standard. (Previous A4 quattro models split torque with a default front:rear 50:50). The additional torque bias applied to the rear wheels helps mimic the driving dynamics of rear wheel drive cars.

Audi was reported to stop offering 3.2L V6 models in 2010 model year, but still offers them as of August 2011 (Germany).

All petrol engines use Fuel Stratified Injection (FSI), and all diesel engines use the common rail fuel delivery (with a pressure of 1,600 bars (23,000 psi)), with piezo injectors of their Turbocharged Direct Injection engines.

Transmissions

In 2009, Audi announced the seven-speed dual-clutch S tronic transmission as option for A4 in UK and European markets.

All A4L models include Speed 8 multitronic continuously variable/manual transmission, except for A4L 3.2 FSI quattro, which includes Tiptronic automatic transmission.

Performance

Vehicle model, transmission	Acceleration 0-100 km/h (62 mph) (s) (saloon)	top speed (saloon)	CO2 emissions (g/km) (saloon) (Directive 80/1268/EEC)	notes
Petrol engines
1.8 TFSI, 6-speed Manual	10.5	209 km/h (130 mph)	164
1.8 TFSI, 6-speed Manual	8.6	225 km/h (140 mph)	164
1.8 TFSI, 8-speed Multitronic CVT	8.6	250 km/h (155 mph)	169
2.0 TFSI, 8-speed Multitronic CVT	8.2	236 km/h (147 mph)	167	Aus/NZ/ZA only
2.0 TFSI, 6-speed Manual	6.9	250 km/h (155 mph) (elec. limited)	149
2.0 TFSI, 8-speed Multitronic CVT	6.9	241 km/h (150 mph)	167
2.0 TFSI quattro, 6-speed Manual	6.6	246 km/h (153 mph)	169
2.0 TFSI quattro, 7-speed S tronic	6.5	241 km/h (150 mph)	172
3.2 FSI, Multitronic CVT	6.5	250 km/h (155 mph) (elec. limited)	194
3.2 FSI quattro, 6-speed Manual	6.0	250 km/h (155 mph) (elec. limited)	213
3.2 FSI quattro, 6-speed Tiptronic	6.1	250 km/h (155 mph) (elec. limited)	215
Diesel engines (all common rail (CR) Turbocharged Direct Injection (TDI))
2.0 TDI, 6-speed Manual	10.7	205 km/h (127 mph)	129
2.0 TDI, 6-speed Manual	9.4	215 km/h (134 mph)	134
2.0 TDI, 8-speed Multitronic CVT	9.4	215 km/h (134 mph)	149
2.0 TDI 6-speed Manual	8.3	230 km/h (143 mph)	134
2.0 TDI quattro, 6-speed Manual	8.3	226 km/h (140 mph)	149
2.7 TDI, 8-speed Multitronic CVT	7.7	226 km/h (140 mph)	167
3.0 TDI quattro, 6-speed Manual	6.1	250 km/h (155 mph) (elec. limited)	172
3.0 TDI quattro, 6-speed Tiptronic	6.3	250 km/h (155 mph) (elec. limited)	182

Equipment

LED daytime running lights of A4

Standard equipment on the B8 A4 includes:

• LED daytime running lights (on some models);
• MMI system (Multi Media Interface) (multi-mode interface of driver information and entertainment systems); (3rd generation MMI expected in vehicles produced from week 22 of 2009)
• Electronic hand brake
• Speed sensitive power steering ('servotronic' - on some models)

Options:

• Audi Lane Assist (lane departure warning system);
• Audi Side Assist (blind spot monitor);
• Adaptive Cruise Control (ACC);
• Advanced Key (keyless entry and start);
• Bang & Olufsen sound system (505W);
• Advanced parking system front and rear with reversing camera;
• Navigation system with full MMI with 7-inch (180 mm) screen;
• Adaptive headlights (with cornering technology);
• Audi Drive Select;

Safety

The Audi A4 (B8) passed the Euro NCAP crash tests, and was awarded the following car safety ratings:

• Adult occupant =
• Child occupant =
• Pedestrian =

A4 TDI concept e (2008)

It includes a common rail 1,968 cc (120 cu in) TDI diesel engine rated at 120 PS (88 kW; 118 hp) and 290 N·m (210 lb·ft), a stop-start system and regenerative braking. It can achieve a fuel consumption of 3.99L/100 km (58.95 mpg) and CO₂ output of 105 g/km. It can accelerate 0-100 km/h (62 mph) in 10.7 seconds, with top speed of 206 km/h (128 mph).

Other features include electric motor-based power steering, revised aerodynamics, low-rolling resistance 225/45R17 tyres, and electric actuation of the rear brakes.

The car was unveiled in Paris Motor Show.

Model year changes

During a model cycle changes are made to integrate new technologies and to keep the model competitive. These changes are referenced based on the model year (MY) of the car. In Australia, the B8 has undergone 2 revisions leading to three variants, the B8, B8 MY10 and B8 MY11.

External links

• Audi A4 at Audi International website
• Audi A4L at Audi China