Jun 28, 2025
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OK I have what is probably an unusual question I bought my self a cupra 300 4 drive and the previous owner had it stage 2 tuned with a 3 inch miltek exhaust system and possibly other parts it apparently make near to 400 bhp now but on normal driving I am lucky to 30mpg so can i get it downtuned a bit for better mpg or is there an option to vary the tuning so i have economy in drive mode and power in sport mode or do i have to put the car back to original parts. just trying to get an idea of my options. Thanks in advance for any advice
 
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What fuel economy were you expecting?
well i wasnt expecting 50mpg but i had leon 190 before that did 50 mpg easily and the standard 300 does 40 so i would like to get around 35 with normal driving but i got 29.5 on a reasonable drive and back and forth to work i get 26
 
Real world mixed usage economy on a standard 2WD 2.0 TSI is circa 35-40mpg at a push. The likes of the Golf R or Cupra 4Drive were never realistically designed with economy in mind, plus a vehicle with AWD and modifications (especially stage 2 tuning where the CAT/GPF has potentially been removed) could contribute to a big drop in MPG (a not very efficient tune being an underlying factor).

Reverting back to stock is going to cost a substantial amount of money to replace the exhaust system, have the map removed/altered etc.

Have you considered an alternative vehicle? I only ask, as I don't think there's going to be a "one size fits all" solution.