How do mileage limits and excess mileage charges work on car finance?
Why a mileage limit exists at all, how the excess charge is calculated, when it applies and when it does not, and what to do if the figure was set too low.
- Difficulty
- beginner
- Time
- 12 min
- Read
- 5 min
Short answer
A PCP or lease sets an annual mileage because the whole calculation depends on what the car will be worth at the end, and mileage is the biggest single variable in that. Exceed it and you pay a per-mile charge set out in the agreement, applied to the total overage across the whole term. It only bites if you hand the car back or part-exchange — pay the balloon on a PCP and keep the car, and mileage becomes irrelevant.
The mileage limit is the most resented feature of modern car finance and it is the one with the clearest logic behind it. On a PCP or a lease, the lender has guaranteed what the car will be worth at the end. A car that has done 30,000 miles is worth appreciably more than the same car that has done 90,000, so the guarantee is only meaningful if the mileage is fixed. Everything else follows: the limit exists to make the guarantee possible, the excess charge exists to compensate the lender when the limit is exceeded, and the whole apparatus vanishes the moment you decide to keep the car and pay the balloon.
Step by step
- Find the two numbers in the agreement.The contracted annual mileage, and the excess mileage rate expressed as a charge per mile. Both are stated. The total contracted mileage is the annual figure multiplied by the number of years, and it is that total the charge is measured against, not each year individually.
- Understand that it is measured over the whole term.A year of high mileage followed by a year of low mileage nets off. The assessment happens at hand-back against the total contracted mileage, so a bad year does not trigger anything on its own.
- Know when the charge applies.It applies if you hand the car back at the end of a PCP or a lease, or part-exchange the PCP where the guaranteed value is being relied on. It does not apply if you pay the optional final payment and keep the car, and it never applies to hire purchase, because you are keeping the vehicle in any event.
- Be honest about your real mileage when the agreement is set.A lower contracted mileage produces a lower monthly payment, which is why people are tempted to understate it. The excess charge is almost always more expensive per mile than the additional monthly cost of a higher allowance would have been. This is the single most common and most avoidable cost in the whole product.
- Track it during the term.Divide the total contracted mileage by the number of months and compare against your actual reading periodically. Discovering an overrun with a year to go leaves options; discovering it at hand-back does not.
- Talk to the lender if it is drifting.Many will re-profile the agreement mid-term — raising the contracted mileage and the monthly payment for the remainder. That is almost always cheaper than the excess rate, and it is a straightforward conversation. Do it early, because it becomes less useful as the term runs down.
- Consider the alternatives at the end.If you have gone well over, paying the balloon and keeping the car removes the charge entirely, because the guaranteed value is no longer being relied on. Whether that makes sense depends on what the car is worth, which is a matter for a valuation rather than a rule.
- Do not confuse it with the condition charge.Excess mileage and end-of-contract damage are assessed separately and charged separately. A car handed back within its mileage can still attract substantial damage charges, and vice versa.
Common mistakes
- Understating your annual mileage to lower the monthly payment — The excess rate is normally more expensive per mile than the additional monthly cost of a realistic allowance would have been. It converts a small known cost into a large surprise one.
- Assuming the limit applies to hire purchase — It does not. Mileage limits exist to protect a guaranteed future value, and hire purchase has none because you are keeping the car regardless.
If it doesn't work
Going to be significantly over the limit
Cause: Circumstances changed, or the figure was set optimistically — Fix: Contact the lender now and ask about re-profiling. Almost every lender offers it, and the revised monthly cost is normally well below the excess rate.
Well under the contracted mileage at hand-back
Cause: Drove less than expected — Fix: There is generally no refund — the allowance is a ceiling, not an entitlement. This is why setting the figure realistically at the outset matters in both directions.
Excess charge much larger than expected
Cause: The rate applied to the total overage across the whole term — Fix: Check the arithmetic against the agreement: total contracted mileage, actual mileage, difference, multiplied by the stated rate. Query anything that does not reconcile.
Mileage fine but a large damage charge
Cause: The condition assessment is separate — Fix: Different standard, different charge. The fair wear and tear guide in this catalogue covers what is assessed and how to prepare for it.
Want to hand the car back early
Cause: Circumstances changed — Fix: Different question entirely. Look at voluntary termination rights on a PCP or hire purchase, or the early termination charge on a lease — both have their own guides here.
Part-exchanging and the dealer mentions the mileage
Cause: Excess mileage reduces any equity above the balloon — Fix: Get an independent valuation of the car as well as the dealer's offer, and compare against the settlement figure. Equity is the difference, and mileage affects it.
Questions people ask
What happens if I go over the mileage?
If you hand the car back or part-exchange relying on the guaranteed value, you pay the per-mile excess rate in the agreement, applied to the total overage across the whole term. If you pay the optional final payment and keep the car, nothing happens at all.
Can I increase my mileage allowance mid-agreement?
Most lenders will re-profile an agreement to raise the contracted mileage for a revised monthly payment. It is normally much cheaper than the excess rate, and the earlier in the term you ask, the more useful it is.
Do I get money back if I drive fewer miles?
Generally no. The allowance is a limit rather than a prepayment, and a lower actual mileage simply means the car is worth more than the guaranteed value — which becomes equity if you part-exchange, but is not refunded as such.