Question 1

What is Oil Pump / Balance Shaft Failure on the Audi Audi A4 Mk3 (B7)?

Accepted Answer

The hex drive for the oil pump rounds off, leading to instant loss of oil pressure and engine seizure.

Question 2

What is 2.0 TDI Cylinder Head Cracking on the Audi Audi A4 Mk3 (B7)?

Accepted Answer

Early 2.0 TDI engines with head casting numbers V330, V320, V125 and V130 are prone to cylinder head cracking, causing coolant loss and overheating.

Question 3

What is DPF Clogging and Regeneration Failure on the Audi Audi A4 Mk3 (B7)?

Accepted Answer

Town-driven diesel cars struggle to regenerate the DPF, leading to warning lights, limp mode and expensive DPF cleaning or replacement.

Question 4

What is 2.0 TFSI High Pressure Fuel Pump Cam Follower on the Audi Audi A4 Mk3 (B7)?

Accepted Answer

The cam follower for the high-pressure fuel pump wears rapidly on 2.0 TFSI engines, leading to fuel pressure loss, misfires and potential pump damage.

Question 5

What is Diverter Valve (DV) Diaphragm Split on the Audi Audi A4 Mk3 (B7)?

Accepted Answer

The rubber diaphragm in the diverter valve splits on 2.0 TFSI engines, causing boost leaks, poor performance and turbo flutter noises.

Question 6

What should I check when buying a used Audi Audi A4 Mk3 (B7)?

Accepted Answer

On 2.0 TDI models, check for oil pump/balance shaft upgrades

Question 7

What should I check when buying a used Audi Audi A4 Mk3 (B7)?

Accepted Answer

2.0 TFSI engines need regular oil checks; they can be thirsty

Question 8

What should I check when buying a used Audi Audi A4 Mk3 (B7)?

Accepted Answer

Check the boot lid for rust around the number plate lights

Question 9

What years was the Audi Audi A4 Mk3 (B7) made?

Accepted Answer

The Audi Audi A4 Mk3 (B7) was produced from 2005 to 2008.

Audi Audi A4 Mk3 (B7)

Audi A4 Mk3 (B7) Reliability & Common Faults

Browse by Production Year