I would like to add could it be gp regen blocked due to the short trips I make?
Would the warning light come if this the case?
Thanks
GPF regeneration was my initial thought. In addition to your car feeling like it’s in a different gear to the actual gear and your poor fuel consumption, is your car displaying any of the other symptoms that might indicate a forced GPF regeneration is in progress? (See list in my post - reply #6 - at the link posted by @Adam T in reply #2 above). During a forced GPF regeneration, additional fuel is used to help raise the exhaust temperature and neutralise accumulated particulate matter. When my car (a 2020 2.0 litre Polo GTI+) is performing a forced GPF regen, the additional fuel usage results in my mpg worsening by around 30-35% until the regen has finished, after which mpg returns to normal levels.
I don’t think VW’s have a warning lamp in the instrumentation display to show when a GPF regeneration is taking place (my car certainly doesn’t) even though I think some owner’s manuals for various VAG brands might make reference to a warning lamp.
If your car is attempting to perform a forced GPF regen and you complete your your journey before it’s finished (quite likely if you’re doing a high proportion of short trips), then it’ll recommence the regen process during the next - and subsequent - ignition cycle(s) until the process is complete. Assuming that’s what’s happening with your car, then I’d recommend taking it on a decent length run so the engine can get up to optimum operating temperature and trying the ‘engine braking’ method to help clear the GPF; details in my post #6 at the linked discussion topic referred to above.
Please update this discussion topic for the benefit of other forum members once you’ve done the above.
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