21st Mar 2020, 04:48
I used to own a Mercedes W124 E280 Masterpiece. When you get worse fuel consumption, it can be few things you need to check including the wheel bearings, engine leaks, as well as some minor issues with the automatic gear box. Wheel bearings tend to be the beast here which will help to put stress on the car. The other is the air intake body as well as air filter. The other area that I know is engine oil. If the oil is dirty it can also put pressure on the engine to work hard, hence the increased fuel consumption. Otherwise this is what it is, as these cars have very little electronics.
3rd Nov 2014, 23:46
Hi - usually the economy / sport switch allows the car to run either more economically or more responsively. So you should get more MPG if you put it in Eco mode.