Dan77

*UPDATE* I got myself the VAG DPF app and a dongle and it turns out the DPF is regenerating a lot, it did it 3 time in a 120 mile journey last night, i screen recorded the app on my phone so i could look back at it and the soot mass measured is climbing really quickly, it went from 7 to 23 grams in 20 minutes, also the the differential pressure would occasionally jump from 50ish hPa to 100-170 hPa for a few seconds while not regenerating, with my limited knowledge i would expect the differential pressure to rise at a steady rate as DPF fills, could a faulty sensor cause the soot reading to be incorrect and make it regen when it doesn't really need to?

Put 46 litres after the fuel light came on, that was after covering just over 400 miles from a full tank. I’m going to record everything over the next few tanks to make sure I’m not going mad!

Hopefully someone can help out with this, I seem to have lost nearly 100miles per tank of diesel recently, the indicated MPG has stayed very close to what it’s always been and I normally get close to 500 miles per tank, however I’ve recently been getting no where near that, I’ve had a mate plug in his VAG DPF app and that didn’t show any issues with the DPF. Photo was taken when the fuel light came on which is normally close to 500miles, no signs of any leaks anywhere it just seem like diesel is disappearing!