Misfuel Insurance Claims: How NZ Insurers Handle Wrong Fuel Damage

Putting the wrong fuel in your car happens to thousands of Kiwis every year at Z Energy, BP, Gull and Mobil stations across New Zealand. The good news is that most comprehensive car insurance policies will cover misfuel damage, though the specifics vary between insurers.

AMI, State Insurance, AA Insurance, Vero and Tower all typically cover misfuel incidents under their comprehensive policies, but there are important differences. Most insurers will cover the cost of draining contaminated fuel, flushing the fuel system, and repairing any engine damage that occurs. However, coverage usually only applies if you haven't started the engine after misfuelling.

AMI and State Insurance generally have straightforward misfuel coverage with standard excess applying. AA Insurance often covers misfuel as accidental damage, while Vero may require you to prove the misfuelling was genuinely accidental rather than negligent. Tower's coverage depends on your specific policy level, with some basic policies excluding misfuel entirely.

The key factor across all insurers is whether you started the engine. Petrol in a diesel engine or diesel in a petrol engine becomes far more expensive to fix once contaminated fuel circulates through the system. Starting the engine can turn a $400 drain-and-flush into thousands of dollars in engine repairs.

When claiming, you'll need to provide details about where and when the misfuelling occurred, proof that you stopped driving immediately upon realising the mistake, and documentation from a certified mechanic about the required repairs. Most insurers prefer you to use their approved repairers for assessment and repairs.

Excess typically applies to misfuel claims, ranging from $400 to $750 depending on your policy. Some insurers may waive excess if you can prove the service station was at fault, though this is rare.

What to do right now

If you've just misfuelled, don't start the engine or drive anywhere. Remove the keys immediately and move away from the fuel pumps if safe to do so. Contact your insurer to report the incident and ask about approved repairers in your area.

Call EEK Mechanical on 0800 769 000 for immediate assistance. We operate 24/7 across New Zealand and will dispatch a tow truck to collect your vehicle and transport it safely to a certified workshop for proper fuel system cleaning and any necessary repairs. Getting professional help quickly can make the difference between a minor inconvenience and a major insurance claim.