[quote="ch.talal, post:427, topic:241996, full:true"]
Do not use hi-octane. It's not needed. Use regular fuel.
Inside city when you have to stop and go, do not expect mileage like highway. Besides driving style also matters. If you are an aggressive driver, you won't get good mileage.
Make sure your car wiring is intact and some electrician did not mess with it.
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thank you for your expert opinion, I really appreciate and got your point as well