Modifikation car

There are equal amounts of fear and bravado when it comes to modifying new cars. Many owners worried they’ll void their warranty don’t modify their car at all. Others make modifications they can reverse if they need to take a car in for warranty work. But few know what a car company even looks for when assessing a modified car with a problem.

The Magnuson-Moss Warranty Act of 1975 helps consumers when it comes to installing aftermarket parts, but only to a certain extent since the manufacturer can still deny coverage if they can prove that the aftermarket part caused the damage.

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Going in for a warranty repair if your car is modified can be a stressful affair since the decision of whether the damage caused the modification is often at the whim of the technician diagnosing the car. Luckily, we spotted a document in the Ford service portal that shows us at least how one manufacturer decides what caused the damage and whether they will approve a warranty repair.

The document posted on the Ford service portal and available through some public websites is called “A Guide to Identifying Failures Related to Performance Modifications” as it focuses on identifying potential modification to the gas engines in their performance cars. Ford sells tons of desirable cars for tuners, and it’s no surprise to see a document like this from the company that supplies the public with Fiesta STs and Mustangs.