Toyota Corolla 2004 Problems

YOU can use them without causing any damage to your engine, but long-life spark plugs are considerably more expensive than regular ones and you should consider this before installing them.

YES, it is reasonable. A 4 per cent discrepancy is well within the allowable tolerance of plus or minus 10 per cent. Cars are assembled from thousands of parts, all of which have their own individual tolerances and these stack up as the car comes together. If the odometer is reading the way you describe, you should not have a problem. At 100km/h your average speed will actually be 96km/h. In other words, your speedo is optimistic, which is the case with most cars.

THE car should not roll backwards if the torque converter is working properly, though the ZR engine does need a lot of revs. Take it back to the dealer and get them to check the operation of the automatic, but also try holding the car on the brake -- perhaps with your left foot when you are stopped -- so it has more pulling power when you accelerate on a hill.

I can imagine that it's an annoying habit and I would also like to fix it if it was my car. Does it happen when the airconditioning is turned off? The reason for having the idle speed up when the engine starts is usually to ensure it doesn't stall when under the extra load of ancillary systems such as airconditioning. If that's the case, I would expect it wouldn't happen when the airconditioning is turned off. As for the fuel consumption, 10 litres/100km is on the high end of what I would expect. Something like 8.0-9.0 litres/100km is what I would expect. Contact Toyota direct on 9647 4444.