Audi A3 losing coolant

I own an Audi A3 diesel on a 57 plate and coolant is disappearing. There is no noticeable leak and it doesn't appear to be mixing with the oil. Before I embark upon a costly garage investigation have you any idea what the problem may be?

Asked on 5 December 2012 by dikpek

Answered by Honest John

If you're lucky it may be nothing more than an airlock from using the heater again after the summer. This can blow coolant out of the header tank pressure cap. See: www.honestjohn.co.uk/faq/cooling-system-airlocks/

Tags: technical issues coolant

Similar questions

What temperature should my MINI run at?

Is 106 degrees celsius too hot for the engine of my 2007 MINI? The warning light has not come on but the bonnet gets very hot.

Why does my engine coolant light come on when I tow my caravan?

I own a 2012 Ford Mondeo 2.0. When towing my caravan the engine coolant light came on with loss of power, after a minute or so the power returned and the light went off. After pulling into the caravan...

VW Golf Mk7 GTD with coolant issues - can you help?

My new Golf Mk7 GTD 184 bhp TDI DSG has had some teething problems . 1. it has used over 1 litre of oil every 4000 miles ( now at 8K ) .Also whilst checking the oil levels, the coolant overflow reservoir...

Related models

Audi A3 (2008 - 2012)

Good choice of engines. Some petrol engines now chain cam. Comfortable and well built interior. cheap to run 1.6 TDI. Feels very refined especially on the motorway.