If you have been offered a throttle body cleaning or a fuel injector service, politely decline and find a more reputable ...

Credit: Coherus. The on-body injector includes features such as a retractable needle mechanism, an indicator, status light and auditory signal to help patients confirm the dose has been administered.

Fuel system issues can be expensive, so it makes sense to invest in a petrol injector cleaner next time you fill your car up.