cogarch
Member
Can poor fuel consumption be a symptom of poor engine tuning? If so, what level of fuel consumption if any could justify a service under warranty?
We bought our 2005 A2 1.4 TDI in March, as a family car to replace an aging petrol Passat estate (which was averaging about 27 mpg around town). I was tempted by a hybrid but, with past experience of an A4 1.9 TDI getting up to 65 MPG on the motorway, I was looking forward to getting figures that were even better with an A2 Diesel, with superb design and handling to boot.
The design and handling are as expected, but in terms of fuel consumption I have been managing an average of 37 MPG around town and 44 MPG on the motorway (A/C on most of the time), with a maximum of 56 MPG in a controlled experiment when I filled the tank up before and after driving 100 miles at a steady 70 MPH (slowing down as necessitated by road conditions!). This was nowhere near what I had expected - I thought I might have found the reason when I discovered my tyres had been under-inflated. However the figures weren't any better when the tyres were pumped up to the recommended pressure.
It's not as if I'm lead-footed -- I pride myself on being a pretty smooth driver. The question is, are these what is to be expected for this model, and if not might there be an underlying mechanical problem?
We bought our 2005 A2 1.4 TDI in March, as a family car to replace an aging petrol Passat estate (which was averaging about 27 mpg around town). I was tempted by a hybrid but, with past experience of an A4 1.9 TDI getting up to 65 MPG on the motorway, I was looking forward to getting figures that were even better with an A2 Diesel, with superb design and handling to boot.
The design and handling are as expected, but in terms of fuel consumption I have been managing an average of 37 MPG around town and 44 MPG on the motorway (A/C on most of the time), with a maximum of 56 MPG in a controlled experiment when I filled the tank up before and after driving 100 miles at a steady 70 MPH (slowing down as necessitated by road conditions!). This was nowhere near what I had expected - I thought I might have found the reason when I discovered my tyres had been under-inflated. However the figures weren't any better when the tyres were pumped up to the recommended pressure.
It's not as if I'm lead-footed -- I pride myself on being a pretty smooth driver. The question is, are these what is to be expected for this model, and if not might there be an underlying mechanical problem?