How to Detect Odometer Fraud During a Used Car PDI

Thinking of buying a used car? Well, it’s a smart move, but only if you know what to look out for. One of the first things most buyers check is the odometer reading, as it directly impacts the car’s value, condition, and future maintenance needs.

But here’s the catch; not all readings are genuine. Some sellers roll back the reading to make the car look less used than it really is. This is called odometer fraud, and it’s one of the most common tricks in the second-hand car market. If you miss it, you could end up overpaying for a vehicle that’s already seen more wear than it shows.

That’s where a used car PDI (pre-delivery inspection) becomes crucial. It gives you the chance to check if the mileage shown matches the car’s actual usage. A thorough inspection helps you spot tampering and make a confident decision.

This article explores how odometer fraud works, how to detect it during a second-hand car inspection, and what tools or warning signs can help you stay away from a bad deal.

Understand the Importance of Accurate Mileage

The total distance covered by a second hand car is one of the most crucial aspects in determining its price. A vehicle that runs fewer kilometres usually means less wear and tear. On the other hand, a vehicle with higher usage tends to fetch lower value because of increased wear and the high risk of unforeseen expenses in terms of repair costs.

Hence, many owners and buyers resort to activities such as odometer rollback to get more than what the car’s actual worth is when selling. A used car inspection can help save buyers from this fraud, and get a car that’s actually worth the amount they’re paying. 

How Does Odometer Fraud Work?

The idea behind odometer fraud is simple. The seller changes the mileage so the car looks less driven than it really is. How it's done depends on the car.

• Older cars with mechanical odometers

In older cars, the reading was rolled back by physically turning the dial backwards. It was crude, but it worked.

• Modern cars with digital instrument clusters

   

In newer cars, tampering is more technical. Fraudsters use OBD tools and software to reprogram the instrument cluster so it displays a lower figure.

The technology has evolved, but the intent hasn't. If you fall for it, you could pay full price for a car that has seen far more wear than advertised. That hidden wear usually shows up later as the expensive kind of repair.

How to Check for Odometer Fraud?

• Take a close look at the pedals and gear knob

   

If the car claims to have done just 30,000 km, but the brake pedal is looking a bit too scuffed or the gear knob feels worn out, it could be a sign of odometer tampering. Light usage shouldn’t leave heavy marks. Also check whether the gear pattern markings on the knob have faded. That usually means years of regular shifting.

• Check the dashboard for any tampering signs

   

Tampering often means someone’s opened up the instrument cluster. If you notice scratches near the screws, loose panels, or anything that looks like it’s been forced open, it’s worth asking questions.

• Match the service history with the current reading

A car service history records its past journey. If past records show much higher mileage than what’s on the odometer now, or if there are large unexplained gaps, it could be a dead giveaway of tampering.

• Look at the tyres – they tell their own story

   

Most tyres last around 40,000 to 50,000 km. If you’re buying a car with ‘low mileage’ but the tyres look unusually old or worn, something’s not adding up.

• Feel the steering wheel

   

A steering wheel that is worn smooth or shiny has had thousands of kilometres of hands on it. It's hard to fake and even harder to explain on a "low mileage" car.

• Check the driver's seat

   

A sagging seat, flattened side bolsters or worn fabric on the driver's side all point to heavy use. If the car claims 30,000 km but the interior looks like it has spent years as a city taxi, walk away.

• Pop the bonnet

   

Look for cracked hoses, heavy grease or oil build-up, and a drive belt that looks tired or cracked. These are not signs of a lightly used car. Keep the car's age in mind, since rubber parts also age with time. But heavy wear under the bonnet paired with a low reading deserves a closer look.

Spotting odometer tampering isn’t always easy, but keeping an eye on these little things during your used car inspection can help you steer clear of a bad deal.
 

Read the Tyre DOT Code to Verify Usage

Every tyre has a DOT code moulded on its sidewall. The last four digits tell you when the tyre was made. The first two digits are the week, and the last two are the year. So a code ending in 3521 means the tyre was made in the 35th week of 2021.

This lets you date the tyres yourself, whatever story you're being told. Here's what the dates can reveal:

Don't Forget the Spare Tyre

The spare tyre is often the most honest part of a used car. It is rarely used, almost never swapped, and usually still carries its original factory date. Compare that date with the car's manufacturing month and year, which you'll find on the RC. The two should be close, with the spare usually made a few months before the car.

Now look at the four tyres on the road. If the spare is original but the running tyres have been replaced more than once, the car has likely covered more kilometres than the odometer shows.

Check the Used Car’s Digital Records through a PDI

You can trust the digital records of used cars derived by using a pre-delivery inspection service to make an informed decision. Here are the records that you must verify:

Vehicle History Report

Used car inspection reports are essential for understanding a vehicle’s history, as they provide insights into the car’s past mileage, insurance claims, and major repairs. It is crucial in identifying used car issues that might not be evident during a normal visual inspection.

Check the reading logged at every service, not just the latest one. If the last service was recorded at 98,000 km and the odometer now shows 45,000 km, you've found your answer in seconds. 

Use Onboard Diagnostics (OBD) Tools

Modern used car inspection reports also include reports from scans through OBD (Onboard Diagnostics) tools. As modern cars are equipped with several sensors, it becomes imperative to verify data from the engine, sensors and other systems for faults. You can also find the total kilometres run in the ECU’s data, and cross-check it with the odometer reading to confirm the vehicle’s actual usage.

Moreover, in many modern cars, mileage isn't stored only in the instrument cluster. It is also logged in other control modules, such as the ECU, the ABS module and the transmission control module. A fraudster may change the reading on the dashboard, but changing every module is much harder. If the reading from any of these modules doesn't match the odometer, treat it as an immediate red flag.

Watch Out for These Seller Red Flags

Sometimes the seller gives away more than the car does. Be cautious if you hear or notice any of these:

• "The service records got lost"

Genuine owners usually hold on to service records, especially for a well-maintained car. Missing records make it impossible to cross-check the mileage.

• "Doctor-owned and barely driven"

Every used car seems to have belonged to a doctor who hardly drove it. A neat backstory costs nothing, so trust the car's condition and documents over the story.

• Pushing for a quick deal

A seller in a hurry to close before you've had time to check may be hoping you won't look too closely.

• Refusing a second inspection

A seller with nothing to hide shouldn't object to an independent inspection. If they do, consider it a warning sign.

Pro tip: Document everything. Take photos of the odometer reading, tyre DOT codes and service records, and keep the seller's claims in writing. This helps if there's a dispute later.

Quick Checklist to Spot Odometer Fraud

Conclusion: Protect Yourself from Odometer Fraud

A vehicle which has undergone odometer tampering could bring with it hidden surprises, sudden breakdowns, and hefty repair costs, not to mention the mental hassle and turmoil. You can easily avoid falling prey to odometer fraud by opting for a professional used car inspection through Cars24, and gain insights into the vehicle’s actual usage and condition, helping you make an informed decision.