Why Is My Changan Karvaan Giving Low Fuel Average Despite Regular Maintenance?

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Why Is My Changan Karvaan Giving Low Fuel Average Despite Regular Maintenance?

Many owners in Pakistan report poor fuel efficiency even after timely oil changes, filter replacements, and tune-ups. What could be the underlying causes despite regular upkeep?

Sandeep asked on 24 Jul 2025 16:22:28 pm

1 Answer

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Car Mechanic Expert - on 24 Jul 2025 16:51:51 pm

Even with regular maintenance, poor mileage can result from deeper issues like a clogged catalytic converter, faulty sensors O2, MAF, weak fuel injectors, o r worn spark plugs. Driving habits and local fuel quality also significantly affect efficiency.