Our 1996 Mystique that we have owned from new, with 103,000 km, now gets about 27 imperial MPG on the 110 km/hour highway we have here. When new, it would average 37, with the odd tank over 40. It gets oil changed every 5,000 km and fuel filter every 10,000. It had the O2 sensors replaced under warranty at about 40,000. The throttle body has been replaced twice (would stick at idle). All hoses were replaced at 80,000 (6 years of age, very sticky inside). Has Continental Touring 2000 tires, stock size on the alloys and ice radials on steel rims for our nice Canadian winters. Does not matter, fuel economy is the same winter or summer. Car gets lots of highspeed highway use as well as puttering the 3 km to work. Fuel economy does not change if I am driving or if my very conservative wife is driving.
Any ideas on what to look at next? I have checked the FAQ and searched for problems but I seem to have dealt with them all, no change. The shop that does the regular service thinks its fuel injectors that need cleaning. Any ideas would be appreciated. Thanks
