Mercedes-Benz A180 Engine Problems

A broken valve spring is not something that would be caused by the fuel. Most likely the spring was faulty, perhaps there was in inclusion in the material it was made from, or there could have been some other manufacturing problem. Use either 95 or 98-octane fuel.

Mercedes-Benz Australia spokesman David McCarthy says: "The issue has been, first, a coolant leak from the thermostat therefore displaying the low coolant level light on a slope. After this repair was completed the customer has started to watch his temperature gauge and found the operation different to what he has possibly experienced on other vehicles. The design of the cooling system has located the temperature sensor in an area where the coolant temperature does fluctuate as the thermostat operates. Stop-start operation can also influence this temperature variance because if the engine is not running no heat is generated. This is normal on the A-Class and has been documented from Germany for our dealers."