Is Vehicle Seat Modification Illegal?

1 Answers
Vivian
07/30/25 5:46am
Car seat modification is not illegal. Traffic regulations have less stringent requirements for vehicle interior modifications compared to exterior changes, as long as the internal layout of the vehicle is not altered. For example, adding or removing seats constitutes a change to the vehicle's internal layout. In simple terms, converting a seven-seater into a six-seater is not allowed, nor is converting a five-seater into a seven-seater. Regulations on vehicle interior seat modification: Illegal vehicle modifications refer to alterations to the appearance, power system, transmission system, or braking system that are not permitted by national laws or exceed the original manufacturer's design load capacity and functionality. Legal interior modifications include changes to interior facilities, such as replacing the steering wheel, installing sport seats, adding instrument equipment, or sound-deadening materials.
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