Hidden Dealer Commissions: How the UK's Biggest Car Finance Scandal Happened

The UK car finance mis-selling scandal is being described as one of the largest consumer finance failures in recent British history — potentially bigger than PPI. But how did it happen? How were millions of motorists quietly overcharged without knowing it?

The answer lies in a practice called discretionary commission arrangements (DCAs), and the way the UK motor finance market was structured for over a decade.

The Relationship Between Dealers and Finance Companies

To understand DCAs, you first need to understand how car finance actually works.

When you buy a car on finance through a dealership, the dealer is not lending you the money directly. Instead, they act as a credit broker — they introduce you to a finance company (the lender) who provides the actual credit. The lender then pays the dealer a commission for making the introduction.

This arrangement is legal and disclosed. Commission arrangements between dealers and lenders are a normal part of the motor finance market. The problem arose in the type of commission arrangement that was used.

What Was a Discretionary Commission Arrangement?

A discretionary commission arrangement worked like this:

1. The lender set a range of permissible interest rates — for example, 6% to 14% APR
2. The dealer could choose any rate within that range for a given customer
3. The higher the rate the dealer set, the more commission the dealer earned

This meant the dealer had direct financial incentive to set your interest rate as high as possible within the permitted range. And — crucially — this arrangement was almost never disclosed to consumers.

You sat across from the dealer, and while they appeared to be helping you find the best finance deal, they were actually being paid more for giving you a worse one.

An Example of How It Worked

Imagine you are buying a used car worth £12,000 on a three-year PCP deal. The lender has set a range of 8% to 18% APR. A fair rate for your credit profile might be 10%.

The dealer, knowing they earn 2% commission for every 1% of rate they add, sets your rate at 16%.

The difference to you:

• At 10% APR: total interest cost approximately £1,850
• At 16% APR: total interest cost approximately £3,040

You have paid approximately £1,200 more in interest than you needed to. The dealer pocketed a larger commission. The lender earned more interest income. You had no idea this was happening.

Multiply this across millions of agreements over 14 years, and you can begin to see the scale of the problem.

How Common Was It?

Extremely common. The FCA's investigation found that DCAs were used by virtually all major motor finance lenders in the UK during the relevant period. The FCA estimated that:

• Millions of car buyers were affected
• The total overcharging may run to tens of billions of pounds
• The average consumer overpaid by hundreds or thousands of pounds per agreement

The practice was so embedded in the motor finance market that many dealers may not have thought of it as misconduct — it was simply how car finance had always worked.

Why Wasn't It Disclosed?

This is one of the more troubling aspects of the scandal. Finance companies knew about DCAs and how they worked. Dealers knew. Regulators had seen evidence of the practice as far back as 2007.

Yet consumers were rarely, if ever, told about it. The FCA's rules required that credit brokers disclose any commission they received where it might affect the advice they gave. But the disclosure was frequently either absent entirely, or buried in small print that customers were not expected to read.

The FCA has since acknowledged that it failed to move quickly enough to address the practice, despite having visibility of it for many years.

The FCA Ban in January 2021

On 28 January 2021, the FCA banned discretionary commission arrangements. From that date onwards, lenders could no longer pay higher commissions for higher interest rates. This removed the core financial incentive for dealers to charge consumers more than necessary.

The ban was a significant step — but it did not address the question of what should happen to the millions of consumers who had already been overcharged under the old system.

The Investigation and Potential Redress

In 2024, following a series of court cases and complaints, the FCA launched a formal review of historical DCA arrangements. It found that the practice had been widespread and systematic.

The FCA is now consulting on an industry-wide redress scheme — a mechanism to identify and compensate affected consumers, potentially without requiring each individual to lodge a separate claim.

The Court of Appeal's landmark October 2024 ruling went even further, suggesting that any undisclosed commission — not just discretionary ones — may give rise to a claim. This is currently being considered by the Supreme Court.

What This Means for Consumers

If you had PCP or HP car finance between 2007 and 2021, there is a reasonable chance you were subject to a DCA or another form of undisclosed commission arrangement.

The fact that you did not know about it at the time is precisely the point. The claim is that you should have been told, and because you were not, you are entitled to recover the excess you paid.

The good news is that you do not need to prove the exact commission arrangement yourself. When a lender is asked to investigate a complaint, they are required to look at their own records and determine whether a DCA applied to your agreement.

How to Find Out If You Were Affected

The simplest step is to check your eligibility with The PCP Team's free online checker. You do not need your original paperwork — just an approximate date for when you took out the finance and the name of the lender.

If your agreement falls within the eligible period and lender, we will help you pursue the claim.

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The PCP Team is a trading style of Credit Claim Assist Ltd, authorised and regulated by the Financial Conduct Authority for claims management activity (FRN 832480). This article is for informational purposes and does not constitute legal or financial advice.