Betterment
Betterment is the amount an insurer deducts from a repair claim when the work leaves the vehicle in a better condition than it was in before the accident, for example a brand new part replacing one that was already old or worn.
It explains why a workshop’s repair estimate and an insurer’s actual payout can differ, since the insurer is only obliged to restore the vehicle to its pre-accident condition, not to improve it. The full mechanics are set out in how betterment affects a repair claim.
Knowing this in advance helps you read a settlement breakdown with realistic expectations rather than assuming any deduction is a mistake.
For example, replacing a ten-year-old corroded exhaust with a brand new one commonly attracts a betterment deduction, since the new part will outlast the original many times over. Ask the workshop for an itemised breakdown so any deduction is easy to check.