Didn’t make a difference to us when driving the ID3, you usually don’t smell your own fumes. At least not from your car, lets put it that way. Meaning, that the smell never actually changed. The one thing i could think of, other than “placebo effect”, is maybe that E10 has a more distinctive smell than E5?
Prior: SEAT Ateca Xcellence Lux 1.5 TSI DSG MY19, VW Golf GTE PHEV DSG MY23
Current: Hyundai Ioniq 6 Ultimate
Next: we'll see what's available in 2028.