Hoping for a bit of advice please. My wife has had her 58 plate 2.0 TDI 143 Avant Auto for a couple of months now and is a little disappointed with the MPG at around 45mpg (driving carefully), but happy with the power. We plan to keep the car for a few years and want to buy a tuning box to improve economy. Any advice as to which one to go for to get best MPG and apart from cost are there any downsides/ risks.
Thanks in advance,
Paul
Thanks in advance,
Paul