Many UK motorists know the feeling: that knot of anxiety when you drop your car off at the garage, wondering what the bill will look like. Will it be a fair price, or will you be hit with unexpected costs and unnecessary repairs? It’s a common worry, and unfortunately, it's often justified.

The truth is, many drivers are indeed paying more than they should. A recent study by Carly (Jan-Oct 2025) found that UK garages could be charging motorists almost 25% more than necessary for routine car repairs. That's a significant chunk out of your wallet that could be better spent elsewhere.

Finding Details Source & Date
Overcharging for routine repairs UK garages could be charging almost 25% more than necessary. Carly, Jan-Oct 2025
Cost difference: Independent vs. Dealer Independent garages are, on average, 28% cheaper (average £260 vs £361) for servicing. Which?, June 2026
Drivers' belief in overcharging Over half of UK drivers (57% overall, 59% women, 55% men) believe they're overcharged. Fixter survey, 2022
Extreme overcharging example A simple £110 sensor repair was quoted up to £672 (5 times the expected cost). Carly, March 2026

Why Do So Many UK Drivers Feel Overcharged?

It's not just a hunch. Over half of UK drivers, approximately 57% (with 59% of women and 55% of men agreeing), believe they are overcharged when getting their car fixed, according to a 2022 Fixter survey. This widespread sentiment highlights a significant trust issue between motorists and some garages.

The reasons for this feeling are varied. Sometimes it's a lack of transparency, other times it's a genuine misunderstanding of what a repair entails. But often, it's because drivers simply don't have enough information to challenge a quote or understand if the work is truly necessary. This information gap makes it easy for less scrupulous garages to inflate costs.

How Much Could You Be Overpaying for Car Servicing and Repairs?

The figures can be eye-watering. Beyond the general 25% overcharge for routine repairs, some cases are far more extreme. A mystery shopping exercise conducted by Carly in March 2026 revealed that for a simple £110 sensor repair, drivers could be charged up to five times the expected cost, with quotes reaching an astounding £672. Imagine paying an extra £562 for a repair that should have been straightforward!

The Independent vs. Franchised Dealer Debate

Where you choose to have your car serviced can also have a big impact on your bill. Which? (June 2026) found that independent garages are, on average, approximately 28% cheaper than franchised dealers for car servicing. They reported average costs of £260 for independent garages compared to £361 for franchised dealers. While franchised dealers might offer brand-specific expertise and parts, independent garages often provide excellent service at a more competitive price, using genuine or equivalent quality parts.

What Are the Common Warning Signs of Overcharging?

Learning to spot the red flags is your first line of defence against inflated bills. Here are some common indicators that you might be paying too much:

Key point. Don't be afraid to ask questions. A good mechanic will be happy to explain the work, show you the problem, and justify the costs. If they're evasive or dismissive, it's time to look elsewhere.

How Can Carvy Help You Avoid Unnecessary Costs?

This is where technology can truly be your ally. An AI-powered car diagnostics app like Carvy puts the power of information back in your hands. Before you even step foot in a garage, Carvy can help you understand what's going on with your car.

By connecting to your car's OBD-II port (or even diagnosing issues without one using advanced AI, as Carvy can do), the app can read fault codes and translate complex technical jargon into plain English. If your dashboard lights up, Carvy can tell you what it means, the potential severity, and even provide likely causes and typical repair costs. This crucial insight means you'll walk into the garage informed, making it much harder for anyone to suggest unnecessary work or inflate prices for a problem you already understand.

With Carvy, you're not just guessing; you're going in with a clear picture of your car's health, helping you challenge dubious quotes and ensure you only pay for what's truly needed. Think of it as having a smart, impartial mechanic in your pocket, ready to give you the facts.

What Steps Can You Take to Protect Yourself from Overcharging?

Being an informed and proactive motorist is your best defence. Here’s how you can protect yourself:

  1. Get Multiple Quotes: For any significant repair or service, always get at least two, preferably three, quotes from different garages. This gives you a benchmark and helps you identify outliers. Make sure the quotes are for the exact same work and parts.
  2. Understand Your Car's Needs: Know when your car is due for its MOT and what kind of service it needs. Is it a full service or an interim one? Familiarise yourself with your car's service schedule. This prevents garages from adding services you don't need.
  3. Ask for Details, in Writing: Always ask for a written quote before any work begins, detailing parts, labour, and VAT. Once the work is done, ensure you receive an itemised invoice. If parts are replaced, ask for the old parts back (unless they're exchange items).
  4. Check Garage Reputation: Do your homework. Look for garages with good reviews on platforms like Google, Trustpilot, or local forums. Check if they're members of reputable trade bodies such as the Motor Ombudsman or the Retail Motor Industry Federation (RMI). These bodies often have codes of conduct and arbitration services. You can also use our guide to find a trustworthy garage in the UK.
  5. Know Your Rights: The Consumer Rights Act 2015 states that services must be carried out with reasonable care and skill, at a reasonable price, and within a reasonable time. If you believe you've been overcharged or received poor service, you have legal recourse. The DVSA (Driver and Vehicle Standards Agency) oversees MOT testing and can investigate complaints about MOT centres. For more detailed advice on dealing with issues, check out our article on stopping garage overcharging in the UK.
  6. Regular Maintenance: Keeping up with routine maintenance can prevent minor issues from escalating into costly major repairs. Address car overheating quickly and keep an eye on your brakes. Proactive care is always cheaper than reactive repairs.

Is the Cheapest Quote Always the Best Option?

While avoiding overcharging is crucial, remember that the cheapest quote isn't always the best. Quality of work, reputation, and the type of parts used all play a role. A significantly lower quote might mean cheaper, inferior parts are being used, or the work isn't being done to a high standard, which could lead to more problems down the line. It's about finding the best value for money: fair pricing for quality work and reliable parts.

Ultimately, transparency and knowledge are your best tools. By being

Average Full Car Service Cost by Car Size (UK) Average Full Car Service Cost by Car Size (UK). Small Car: 160, Medium Car: 200, Large Car: 390. Source: Airtasker, March 2025 Average Full Car Service Cost by Car Size (UK) Small Car 160 Medium Car 200 Large Car 390 Source: Airtasker, March 2025

Frequently Asked Questions

How often should I get my car serviced?

Most manufacturers recommend a full service every 12,000 miles or 12 months, whichever comes first. Regular servicing helps maintain your vehicle's health and can prevent more costly repairs in the future.

Will using an independent garage void my car's warranty?

No, under UK consumer law, using an independent garage for servicing will not void your car's warranty. This is provided they follow the manufacturer's service schedule and use genuine or equivalent quality parts and fluids.

What should I do if I suspect I'm being overcharged for a car service?

Always obtain multiple itemised quotes before authorising any work. If you suspect overcharging, question the garage about the charges, seek a second opinion from another reputable mechanic, and if necessary, you can contact consumer advice services or The Motor Ombudsman for guidance.