That's about the same mileage I'm getting, but I've had an O2 error code since I bought it in 2005. The PO replaced it three times in 40K miles and since it passes emissions just fine, I haven't replaced it yet. I'll check it with a voltmeter next time I get under the car.

The cheapest thing you can do is send an e-mail or call your state senators and have them make the gas companies take the ethanol out of your gas. This will increase your MPG and reduce emissions at the same time. It should also lower the cost of gas.

Paul

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84 500 SEL (307,xxx miles)

Check tire pressure.

I get low/ mid 20s when driving normally. Near 30 when driving gently on long drives.

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'O=00=O'
bmw 2002.
long live the legend