Filled up early to see if PP+G-Eon (my way of P+G) beyond the city limits did much to the fuel economy.
The answer, I'm sorry to say, is it doesn't do much on my actual FE.
The SG gave some very nice numbers for the individual trips and a 4.6L/100km tank average, but they weren't matched by the calculated mpg when filling up (4.88), nor by the car's OBD (4.9).
The SG's steadily dropping average while using P+G was never matched by the OBD I'm afraid.
I'll keep doing P+G in town, as it does seem to help there (OBD average doesn't go up anymore as it used to do), but I'm going to stop doing it on the extra-urban roads or motorway.
Sidenote :
I felt quite tense while doing P+G out on the road, and especially tense on the motorway.
I'd rather drive relaxed
