Wow that is a big increase. If the oil used was thicker like 5w40 then you would see an increase, but not so much. Volvo recommends over 100 000km, A3/B4.
I would start with checking there is no obstruction where the air filter is, maybe starving the car of air.
Is the power the same?
Do you sometimes drive the car a little harder, to burn off gunk and stuff? A car being driven slow all the time gets clogged up, and reduces performance and causes more fuel use.
You should take it for a spirited drive, see if that helps. I think yours uses a filling agent to help the regen of DPF. Get on the highway, 30 km, and drive with rpm above, I think 3000 or above constant.
If that does not help, I would start cleaning the Throttle valve, EGR valve....intercooler, and all the sensors that goes with it.
Also do a turbo clean with Wins Carbon Buster. I did a post about it, and the improvements I got, doing that, and cleaning everything.
Diesels are dirty engines if not cleaned and maintained. Especially EGR etc, they get clogged, and causes issues.
I would start with checking there is no obstruction where the air filter is, maybe starving the car of air.
Is the power the same?
Do you sometimes drive the car a little harder, to burn off gunk and stuff? A car being driven slow all the time gets clogged up, and reduces performance and causes more fuel use.
You should take it for a spirited drive, see if that helps. I think yours uses a filling agent to help the regen of DPF. Get on the highway, 30 km, and drive with rpm above, I think 3000 or above constant.
If that does not help, I would start cleaning the Throttle valve, EGR valve....intercooler, and all the sensors that goes with it.
Also do a turbo clean with Wins Carbon Buster. I did a post about it, and the improvements I got, doing that, and cleaning everything.
Diesels are dirty engines if not cleaned and maintained. Especially EGR etc, they get clogged, and causes issues.
