GAP Insurance: What It Covers, Who Needs It, and When to Buy
GAP insurance covers the difference between what your motor insurer pays in a total loss and what you still owe — or what you originally paid. This guide explains the three main types, when each is appropriate, and how to avoid paying over the odds.
What the gap actually is
When your car is written off or stolen and not recovered, your comprehensive motor insurer pays the vehicle's current market value — not what you paid for it or what you owe on finance. Because cars depreciate the moment you drive them away, that market value is almost always less than your invoice price, and possibly less than your outstanding finance balance.
Example: the gap in practice
Without GAP insurance, you would owe £2,500 to the finance company with no car to show for it.
The three main types of GAP insurance
Finance GAP
Pays the difference between the motor insurer's settlement and your outstanding finance balance. Designed specifically for PCP, HP, and personal loan buyers. Does not help if you paid cash.
Best for: finance buyers
Return to Invoice (RTI)
Pays the difference between the motor insurer's settlement and the original invoice price you paid. Works for finance and cash buyers. More generous than Finance GAP if the invoice price was higher than the outstanding balance.
Best for: new car buyers, cash or finance
Vehicle Replacement GAP
Pays the difference between the motor insurer's settlement and the cost of replacing the car with an equivalent new model at today's prices. The most comprehensive — and most expensive — type. Relevant when new car prices have risen since purchase.
Best for: new car buyers in rising-price markets
Agreed Value GAP
A variation of RTI that pays a pre-agreed sum rather than tying the payout to the original invoice. Less common, but useful for classic or specialist vehicles where invoice price may not reflect true value at the time of loss.
Best for: classic or specialist vehicles
When to buy and where
Dealer-arranged GAP insurance is convenient but typically two to three times more expensive than equivalent cover bought from a specialist provider. The FCA introduced rules requiring dealers to offer a 4-day deferral period before GAP insurance can be sold — use this to compare alternatives. Specialist GAP providers can usually be found online within a day or two of purchase.
Most GAP policies are available for up to 180 days after vehicle purchase. The longer you wait, the higher the premium — but there is no need to buy from the dealer on the day. For context on what a total loss settlement involves, see our article on GAP insurance and total loss claims.
GAP insurance FAQ
Frequently asked questions
- If you paid cash for the car, there is no finance agreement — so Finance GAP does not apply. However, Return to Invoice GAP can still be relevant if the car depreciates faster than you expected and a total loss payout would leave you unable to replace it at an equivalent price. For most cash buyers, the question is whether the gap between market value and invoice price is large enough to justify the premium. See our article on GAP insurance for worked examples.
- Yes — GAP insurance can usually be purchased for up to 180 days after buying the vehicle, sometimes longer. The cost tends to increase the longer you wait, and some providers have upper mileage or age limits. Dealer-arranged GAP insurance at point of sale is often significantly more expensive than policies bought directly from specialist providers within a few weeks of purchase.
- GAP insurance supplements your comprehensive motor insurance payout — it pays the gap between what your motor insurer settles and your invoice price or outstanding finance. It requires a valid comprehensive motor insurance total loss settlement to trigger. If your motor insurer does not pay out (for example, due to a policy exclusion or non-disclosure), GAP typically does not pay either.
- Depreciation on used cars is slower than on new cars, so the gap between market value and purchase price or outstanding finance is smaller. GAP insurance can still be worthwhile on a used car purchased on finance — particularly in the first two years when the finance balance may still exceed the vehicle's market value. For older, lower-value used cars bought outright, the premium may not justify the benefit.