Hello, since the LPG price in Germany has risen enormously (and a friend sells a well-preserved diesel) I am thinking about whether my next car will become a diesel. I am mainly concerned with the consumption of constant motorways at 120 km/h, because for short distances I already have a means of transport with a consumption of 0 (except calories). Data for the consumption at 120 km/h is unfortunately only available until about 1995, e.g. for the BMW e39:https://en.wikipedia.org/wiki/BMW_E39#Model years_199 6_und_1997 In terms of driving performance, the petroler 520 is most likely to match the diesel 525 tds. In the case of petroler, the 7.3 liters at a petrol price of 1.90 euros currently cost around 14 euros. If one assumes an additional consumption of 20 % at LPG, one comes to about 9 liters of LPG, which costs about 9 euros at a gas price of 1 euro. In the case of diesel, it would be 6.7 liters times about 1.80 euros, which corresponds to about 12 euros. To what extent has the technology with the diesel (and petroler) in the letz Is there any data on the consumption of the same car with diesel and petrol engine (and possibly also electric motor) at 120 km/h, so that you can compare? Greeting Desperado