Why do car makers exaggerate performance stats?

Test Car's performance

Despite the growth of ethical concerns, plethora of companies still try to deceive their customers in terms of the product/service they offer to them. Car manufacturers are not exclusion to such unethical behavior. They do claim that they want to be sustainable, but their actions don’t always comply with this statement.

Do we have to care about performance characteristics?

The short answer will be yes, we definitely have to. Automobile manufacturers know the importance of these figures and that is why they enhance not only the performance of their vehicles, but also the specifications. It is vital to take these characteristics into account whilst making purchase decision, as they will significantly affect the safety, the budget and the comfort of the owner.

But what if the brand of my vehicle is quite reliable one?

There is plethora of car brands, but there are those that stand out because of their consistent brilliance. However, even the giants of automobile manufacturing industry are often involved in such unethical behavior. Audi Bentley, BMW, Porsche and VW have recently admitted that their performance figures have been overstated significantly. Whether it is for the sake of favoring customers for insurance taxation or for boosting sales is a million-dollar question.

How do car manufacturers’ deceitful actions come into light?

There are multiple causes that explain but not justify overstated car’s performance. Governments and regulation bodies always try to find discrepancies between the statements of these companies and the real-life performance of their vehicles. However, most of the time individual customers are the ones who are able to determine these inconsistencies. Governmental bodies try to take prompt actions on the basis of their complains. Such devices as Mileage Stoppers, Can Filters, Speedometer Calibration Tools allow individual customers to test their vehicle without affecting its mileage.

What factors do automobile manufacturers overstate?

Fuel consumption figures

Certainly, for some people having high-performance vehicle is kind of the hobby and they favor the engine size rather than the economy. However, in most of the developed countries vehicle is not perceived as a symbol of authority anymore and people seek to buy the vehicle that will simply be used as a means of transportation.

Some researches state that economy figures are exaggerated by up to 120% in certain cases. It’s not runner-up companies who are involved in these deceitful actions, but car industry giants as well. Audi, Bentley, Porsche and VW are those companies who have admitted that fuel consumption figures, which they provided, were overstated.

Carbon emissions

Environmental concerns are always in the center of attention as earth is facing serious dangers from the behavior of humanity. Non-profit International Council on Clean Transportation (ICCT) conducted a research that pinpoints that automobile producers’ figures about carbon emission are understated by about 25% (before it was 10%). Similarly, BMW was fined because of 30% discrepancy in their numbers.


It is said that money cannot buy health. Neither economy nor engine size will trigger people to buy a car if their safety will be at stake. Car manufacturers use this perception to overstate their vehicle’s safety in order to gain deceiving competitive advantage.

WeRide.ai and Pony.ai are two Chinese startups that were convicted for overstating the safety of their fully autopiloted vehicles. They intended to offer fully automatized taxi services, but government bodies made sure to check extensively their claims in terms of safety. The results were significantly different from those stated by these companies.

Engine size

If you are one of those individuals who admires speed you will understand why this criterion is crucial. Some early adopters are always eager to pre-order their favorite vehicle. However, they are sometimes disappointed as the performance doesn’t meet their expectations.

Why Automobile producers overstate?

Because of harsh competition

Nowadays, it became almost impossible to differentiate your product because of harsh competition. Even comparatively new brands such as Tesla offer cars that perform much better than Volkswagen. To survive in such environment, it is essential to differentiate your product by all means. However, the threshold in terms of development is getting closer and some companies don’t have any other option than lying. Car manufacturers are inclined to overstate the performance of their vehicle to trigger the customers to make purchase decision. Even though such behavior can easily repel their customers in the long-run, they sometimes are eager to get short-term profits.  

To Favor Customers

You may be wandering how overstating such numbers can favor ordinary customers. In some countries, taxation level depends on the engine size, as it indicates the amount of fuel the vehicle consumes. In China for example a car with 4001cc engine is going to be around 18% more expensive (in terms of taxis) than one with 3999cc engine.

Automobile manufacturers sometimes understate these stats to make vehicle less taxable. Whether it is to favor customers or to make the vehicle more likeable probably we will never know.

Because “time is money”

Previously car producers used to test their vehicles thoroughly before making them available for customers. Nowadays, efficiency is the most important criterion that every company is trying to improve and time is an important component of this factor. Despite noticeable improvements in testing devices, time is still required to determine any faults that might appear after frequent usage of the vehicle.

How to check your car’s performance?

As the previous paragraphs suggest most of the customers are at a disadvantage as they will never know if their vehicles undesirable performance is because of the usual depreciation or because of overstated stats.

Mileage stopper

The best way to check the truthfulness of your manufacturer and the state of the vehicle is to use the mileage stopper device. It can calibrate your speedometer and allow you test these characteristics without increasing mileage unnecessarily. This is a great opportunity to make sure that the automobile manufacturer you are loyal to, is truly as good as it seems to be.

Similarly, safety is not a factor that you can neglect solely because of the claims of the producer. It would be unfavorable to check its safety directly in the street and put yourself in danger. Hence, stopping mileage can help you to check regularly the performance of the vehicle with simple key combinations. Even the installation process is quite simple and doesn’t require thorough understanding of car’s maintenance.

What about car checking service?

Car’s parts are interdependent components and their simultaneous condition determines the vehicles overall well-being. Hence, just checking each part will not give the full understanding of your vehicle’s health. You will need to take precautions and test your vehicle on your own. Car checking facilities do the great job in determining the condition of the parts but checking general condition in motion is equally important.

Is it worth to test the vehicle?

You can get the payment if you prove them wrong

All the car producers who have committed such unethical behavior had to pay reimbursement to the car holders who were affected by their actions. Hence, checking your vehicle will give you the opportunity to get the money back that you have spent because of this deceit.  

You will know whether your loyalty is truly worth it or not

Most of the car manufacturers make more profit from selling parts rather than a vehicle on its own. Therefore, you will be able to avoid such extra expenses and change the preferences for the brand that you are loyal to.

Being proactive in terms of safety

Chevy Cobalt was one of the most notable examples of the safety issues that a new vehicle might have. However, such scandals are only revealed after multiple accidents that indicate to the faulty parts of the vehicle. If more people used to test their new car before starting to use it on a daily basis, such cases would not be as frequent as they are nowadays. It is always advisable to test a new vehicle for any incontinencies with the stated characteristics before putting yourself and your relatives in danger.


Nowadays, car manufacturers are more eager to deceive their customers.  Harsh competition triggers them to act unethically out of necessity and exaggerate the specifications of their vehicles. However, to avoid any complications it is always desirable test your newly purchased vehicle. Mileage stopper device is a great option to be proactive and make sure that your vehicle performs as stated.

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