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Audi A4 (2008 - )

Last updated 2 April 2014

 
5
High quality interior with plenty of space. Excellent steering and handling. Available with quattro four-wheel drive. Frugal 2.0 TDI. Improved for 2012 with more efficient engines.
Very good, but doesn't handle quite as well as a BMW 3 Series. Chain cam 1.8 and 2.0 TFSI more reliable than belt cam diesels.
Updated 2 April 2014

Oil pump drive failure reported on 123,000 mile March 2008 Audi A4 2.0 TDI 143. Hexagonal shaft rounded off at its corners. Quoted repair bill for new oil pump, new balancer shaft assembly, new turbo...

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Introduction

Just as Porsche has developed increasingly sophisticated solutions to overcome the fundamental imbalance of an engine overhanging the back wheels, Audi has had to do the same job at the front.

Worst of all were the old iron block five-cylinder Audi 100 diesels that much preferred to go straight on at corners than actually change direction.

Fortunately, for most of us, these are no more than a memory. Audi has continually been getting better at dealing with its disability and had all but disguised the ponderous pendulum effect of its overhanging engines in the final incarnations of the 2005-2008 A4.

But its big breakthrough came earlier this year with the A5. The engine still sits out in front of the front wheels longitudinally, but, by moving final drive further forward, the weight of engine and transmission is better distributed between the front wheels.

How they do this is to take drive from the back of the gearbox, then run a propshaft forward to a differential that sits on the right hand side of the flywheel, with the left driveshaft running between the engine and the flywheel.

Next year's A4 shares this new drivetrain, as well as a longer wheelbase than past Audis and much improved front suspension, now 5 link in aluminium, with a steering rack repositioned in front of the engine so steering input is fed more directly to the wheels.

Audi A4 2007 Range Road Test

Audi A4 2008 Avant Road Test

Audi A4 2012 Facelift Road Test 

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