I see reports of AAZ or 1Z powered B4s getting close to 80MPG whereas my 1.9 non-turbo gets an average of 44MPG with a one-time record of 49MPG. I wonder if it's the engine or the gearbox that contributes towards the phenomenal fuel economy of the TDI B4s?
Does anyone have a chart of the gear ratios in the B3/B4 transmissions? Any advice appreciated
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