I had my Altea 1.9 TDI (BXE) for a few weeks now and already put some 1500 miles on it. I bought for the known reliability and good MPG of the VAG 1.9. I am however getting about 39mpg both on the computer and doing the math brim to brim. That is driving exclusively at 70mph (per satnav on the M4 with flowing traffic and with the ocassional 75mph fro overtaking. I was hoping to be around 55! I can get 40 on any petrol one. I have since tried a totally different driving style and drove with a feathered right feet and kept the speed at no more than 65 and roughly at 2200 and now I got about 52mpg average on the computer which proved to be very accurate before. The problem is that driving like this is demanding, particularly without a cruise control. I asked around and people are getting 55-60mpg on their PD130 with the 6sp gearbox (mine is 5 sp) and the altea in only 50kg heavier than a golf mk5. Could this be just aerodynamics? There is two questions I would like to throw in here: How much PSI you put on the OEM 205/55/16. I have them at 32 but I read that if I pump them up I can get better MPG. Also (and I don't know the name of the part) the beginning of the airbox (the rectangle that is attached to the radiator so to speak) and connects wit the air box is all crooked and poorly taped with duct tape. So is the engine undertray. Loosely put together with zip ties. Could this be having an effect? Not particularly interested in a remap ot a tuning box unless there is enough people swearing by an improved mpg and even then, the increase of the insurance premium plus the remap would not be too cost effective. I really would like to drive at 70-75mph with decent gas mileage. I can take the granny style most days but I spent too much time on my car to be concerned about keeping constant RPMs with the right foot. Any pointers will be much appreciated!