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Buying a Car on Finance: What They Don’t Tell You

May 26, 2026 by Fraser Leave a Comment

Personal Contract Purchase is the dominant way new and nearly-new cars are sold in the UK. Over 80% of new private car sales involve some form of finance, and PCP is the most common product. It’s a well-designed product for the right buyer — but it also comes with small print that dealerships don’t always volunteer, and decisions made at the point of sale can be costly if you don’t understand what you’re agreeing to.

Designer leaning over table

How PCP Actually Works

A PCP deal has three financial components. First, a deposit — either cash or the value of a part-exchanged vehicle. Second, monthly payments over the term (typically two to four years). Third, a Guaranteed Minimum Future Value (GMFV), sometimes called the balloon payment — a sum set at the start of the contract that you pay if you want to own the car outright at the end.

The monthly payments cover the difference between the car’s purchase price and the GMFV, plus interest. Because you’re not financing the full value of the car, monthly payments are lower than on a Hire Purchase deal — which is the main appeal.

At the end of the contract you have three options: pay the balloon and keep the car, hand it back (provided it meets condition and mileage requirements), or use any equity above the balloon as a deposit on a new deal. The third option — rolling into a new PCP — is what most buyers do, and it’s the option that makes these deals most profitable for manufacturers and dealers.

The Mileage Trap

Every PCP contract includes a mileage limit, agreed at the start. Exceed it and you pay a per-mile charge at the end — typically 6–15p per mile, depending on the contract. On a three-year deal, 5,000 excess miles at 10p per mile is £500 owed at the end. 15,000 excess miles is £1,500.

Be realistic about your mileage when agreeing the contract. Many buyers underestimate, either to get lower monthly payments (higher mileage allowances cost more) or because they genuinely don’t know how much they drive. Check your current mileage against the car’s MOT history over the past two to three years to get an accurate baseline.

If you realise mid-contract that you’re going to exceed the limit, contact the finance company. It’s usually possible to buy additional miles in advance at a lower rate than the end-of-contract penalty rate.

Condition Charges

The British Vehicle Rental and Leasing Association (BVRLA) publishes fair wear and tear guidelines that most lenders use as the standard for condition at return. Within those guidelines, you’re fine — normal use is expected. Outside them, you’re charged.

Dealers are required to give you a copy of these guidelines, but in practice many don’t. Read them. Panel dents larger than a certain size, deep scratches through the paint, cracked glass, damaged alloys, tyres below legal limit — all are chargeable. An independent inspection before return (many companies offer this service for £50–£100) can help you identify and address issues before the official end-of-contract inspection.

Voluntary Termination: A Right You Have

Section 99 of the Consumer Credit Act gives you the right to voluntarily terminate a regulated PCP agreement once you’ve paid 50% of the total amount payable (including the balloon). If you’ve paid more than 50%, you can terminate and walk away without owing any further payments — though you must return the car in good condition.

This is a legal right that some finance companies don’t advertise clearly, and that some will push back on. Do it in writing, reference Section 99 specifically, and keep copies. If the car is in good condition and you’ve reached the 50% threshold, this can be a useful exit if your circumstances change or you simply want to end the agreement early.

The FCA Motor Finance Review

The FCA’s ongoing review of discretionary commission arrangements in motor finance has significant implications for anyone who took out a car finance deal before 2021. Some car dealers had the ability to set their own interest rates on finance deals and earn more commission the higher the rate — without disclosing this to customers. The FCA found this practice widespread and potentially harmful.

Legal proceedings are ongoing, and some lenders have set aside substantial provisions for potential redress. If you financed a car between 2007 and 2021, it’s worth checking whether you may have been affected. The FCA and several claims management firms are operating processes for checking eligibility. Be cautious of claims management companies that charge significant fees — direct claims through lenders or the Financial Ombudsman Service are free.

GAP Insurance — Buy It Independently

Guaranteed Asset Protection insurance covers the difference between your insurance payout and the outstanding finance if the car is written off. It’s a legitimate product that can save you from a significant financial shortfall. But GAP insurance sold at the dealership at the point of finance is almost always considerably more expensive than the same product from an independent insurer.

You have a window of time after taking out finance (typically 30 days) to source GAP insurance independently. Use it — you can typically get equivalent cover for a fraction of the dealership price.

Read the Agreement

This should go without saying, but the finance agreement is a legal document. Read it before signing — all of it, including the small print about excess mileage charges, condition requirements, and what happens if you miss a payment. If anything is unclear, ask. A dealer who can’t clearly explain the terms of the agreement they’re asking you to sign should give you pause.

Frequently Asked Questions

What happens at the end of a PCP deal?

You have three options: pay the balloon payment to own the car outright, hand the car back provided it meets mileage and condition requirements, or use any equity above the balloon as a deposit on a new deal.

Can I end my PCP agreement early?

Yes — once you’ve paid 50% of the total amount payable, Section 99 of the Consumer Credit Act gives you the right to voluntarily terminate the agreement and return the car. Do this in writing and reference Section 99 specifically.

What happens if I exceed my PCP mileage limit?

You’ll be charged a per-mile excess fee at the end of the contract — typically 6–15p per mile. If you realise mid-contract that you’ll exceed the limit, contact the finance company to buy additional miles in advance, usually at a cheaper rate.

Is GAP insurance worth buying with a car on finance?

It can be worthwhile, but never buy it from the dealership at the point of sale. The same cover is available from independent insurers for a fraction of the price. You typically have 30 days after taking out finance to arrange it independently.

Filed Under: Buying & Selling, Money

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