See also:

Nearing Obsolescence?
Just a year or two ago, we pointed out that there wasn't much difference between the Outback and the Subaru Forester, aside from price. Now that a larger, redesigned Forester is on the market for ...

If the light illuminates constantly
If the light illuminates constantly while driving or does not turn off after the engine starts, an emission control system malfunction has been detected. You should have your vehicle checked by an ...

MMT
Some gasoline contains an octane-enhancing additive called MMT (Methylcyclopentadienyl Manganese Tricarbonyl). If you use such fuels, your emission control system performance may deteriorate and t ...