Car remapping is a modern way of increasing a car’s overall performance. If you are a car enthusiast who wants to get the most out of your current vehicle, you are in the right place. I suggest you consider all the benefits and downsides and then make a conscious decision about it. Improving your car’s capabilities sounds tempting, but you should always keep a cool head. First of all, find answers to your questions –,, Do I need it ?  Is it good or bad? Or does it affect my fuel economy?”
Let’s discuss and find out all the necessary details you need to know.

What is ECU remapping?

Sometimes called ‘chipping’ – It is a convenient and practical solution that implies replacing microchips in a car’s ECU by overwriting the existing settings with third-party software. The electronic engine control unit (ECU) is the heart of the engine management system that is responsible for controlling the fuel supply, airflow, fuel injection and, ignition. When the settings of a car’s ‘engine control unit’ (ECU) are altered it allows you to go beyond the limits set by the manufacturer and get the most out of the engine. Moreover, it is beneficial for a specific purpose: a car’s power, torque, MPG during the normal drive. Shortly, ECU software reprogramming is considered one of the best solutions for many car owners.

ECU remapping - definition

What are the benefits of remapping my car and will it work for me?

The benefits of this modification are significantly appreciated among car geeks. It mostly depends on what types of vehicle you have: Non-turbo petrol car, turbo-petrol car, or turbo diesel car. Even though it is only possible to get the most out of remapping for turbo-powered engines, you can also benefit even if your auto doesn’t meet this criterion. Hence, if you are looking for the best way to boost your vehicle’s capabilities, it is superior to its alternatives. The main advantages are the following:

  • Improved horsepower and torque   
  • The car is more responsive: Better control and drivability.
  • Improved throttle response
  • Enhanced rev range

Does vehicle remapping improve fuel economy?

According to popular belief, car remapping provides fuel economy, but the driving habits of car enthusiasts speak volumes. That’s why it depends on the individuals. The majority of drivers who are eager to remap their car, do not miss a chance to use their car’s full potential. They enjoy boosted speed and drivability and therefore ignore increased fuel usage.

Another factor affecting fuel economy is an ultimate need to buy higher octane fuel for your newly remapped vehicle.

The potential impact on your insurance premiums

As with any vehicle modification, you will have to declare ECU chip tuning with your insurance company, mainly because keeping it to yourself is illegal in some countries. You may be thinking they are unable to discover your secret but do not risk it, they have the special departments that deal with such cases. As soon as they catch you in a lie, they will invalidate your policy and refuse to payout. If you honestly inform your insurance company, they will ask you what the power increase is in percent and make a final decision whether continue insuring you or not. 

Taking into consideration the fact that you are reading this article, it is highly likely that you are a skilled driver who considers remapping to use the full potential of the vehicle. However, there is also someone who just wants to increase the speed of the vehicle directly after acquiring the driving license. What if an insurer is willing to cover despite car remapping? Insurers use a rough guide in this case and you should expect a noticeable rise in the cost of your car insurance premium. Learn about other factors affecting auto insurance.

How does it impact on insurance premiums

Things to consider before you make a final decision

ECU remapping, often called Stage 1 tuning, implies a simple ECU software change that can bring you obvious positives. However, you should carefully think about all the details that are related to this. what should I need to know before I remap my car? Read through the checklist and bear those in mind before you go ahead with the modification:

  • Do careful research and choose an authorized company for vehicle remapping. Make sure that qualified professionals provide this service without the risk of damaging your engine. Some untrustworthy companies may take out emission-limiting hardware from your auto, which will be resulted in failing MOT testing.
  • Consider your car’s warranty. Overwriting the manufacturer’s factory settings with new software may invalidate your warranty.It can be reversible in many cases, but dealership technicians will likely spot this kind of ECU modification.
  • Manufacturers intentionally limit vehicles’ capabilities to meet certain regulations. By  ECU reprogramming engine function at its full potential. Hence, there is more wear and tear of the car parts and more pressure on the engine. The fuel economy is not guaranteed. If you are interested in one thing – drive faster, you will be unable to improve fuel economy. Try changing your driving style. The more smoothly you drive, the better you reduce fuel bills.
  • Insurance premiums go up! Think twice if the increased prices are worth the increased performance.


Thus, we’ve learned ECU chip tuning basics and the ultimate purpose of this modification. It can be a cost-effective and less intrusive way to boost cars. However, before you make a final decision, it is reasonable to estimate all the advantages and disadvantages in advance and make sure it is worth it.

Why is mileage important? It’s quite a complicated question, as it’s impossible to state one single reason. It can be overrated in certain cases, and it can also be neglected. Either way, it is undeniable that it’s an important factor when we’re dealing with used cars. If you have all the necessary information as a buyer, sellers will have a hard time ripping you off. And as a seller yourself, you’ll know how to price your car in terms of mileage.

Let’s continue our discussion and figure out what’s the meaning and importance of mileage in the auto industry. It’s time to dig deeper, isn’t it?

What is the mileage and how is it measured?

Mileage is the number of miles your car has traveled during a certain amount of time. The numbers we see on the odometer usually depict the distance your vehicle has covered throughout its lifespan. In certain cases, it could even indicate the fuel efficiency of your car.

Regardless of the definition, mileage is something everybody is interested in. Luckily, we don’t need to have a pad and a pen to track those miles on our own. Be it an old car or a new model, mileage is measured for us.

The odometer is the genius mind here. You’ll find this fella on the instrument cluster. It measures miles by counting the rotations of the wheels and multiplying it by the circumference of the tire. To make sure you always have the correct numbers on display, you need to get standard tires. That way, you’ll avoid any discrepancies that might occur if you have smaller/bigger tires.

How important is mileage on a used car anyway? – we’ll answer that question in a sec. For now, let’s see why odometer data matters when buying a used car.

Is mileage important when buying a used car and why?

The importance of mileage when buying a second-hand car

The answer to the question “is mileage important when buying a used car” is certainly a yes. Mileage can be the deciding factor when it comes to the condition of the vehicle. Though it might not always show the full picture, it will give us an idea about the true value of the car.
If you drive 10,000 – 12,000 miles a year, then we can easily say that you have average i.e. good annual mileage. Anything much higher than that number will be considered as high mileage. If you’re a car owner yourself, it will be a good idea to be proactive and pay attention to your driving habits.

Now, a higher number of traveled distance usually indicates the wear and tear of the car. The parts of your vehicle have their lifespan. For instance, you might have to change the brake pads after you drive 20,000 miles, etc. When we see a car with a mileage of 100,000, we can assume that it has been through a lot.

If you’re wondering “how important is mileage on a used car”, you should remember that people consider more than 200,000 miles as too many i.e. bad. As a result, the price of the pre-owned car drops significantly.

Low mileage isn’t the best alternative either. If numbers on the odometer are suspiciously low, you might be looking at a car that has been sitting in storage for ages. Environmental factors, such as heat (during summer months) and humidity, can affect the internal system of the vehicle. Therefore, it’s always important to be suspicious about the mileage and double-check the condition of the car if the mileage is too low.

Moreover, low mileage should be a red flag as it might indicate possible fraud. If you see the mileage that’s way below the average, then you should check whether the odometer has been clocked or not. By being curious about the history of the car, you’ll be able to protect yourself from deception.

How important is mileage on a used car?

It depends on the scenario. In the majority of cases, you can follow the following rule of thumb: higher mileage = poor condition. However, this rule isn’t set in stone.

Why is mileage important? – because it determines if a car in question is worth your money or not. It can seriously affect the value of the vehicle and shift your opinion about the condition of a used car. Nevertheless, there are other questions that we should also be asking before buying a used car.

Sometimes it can be crucial to know to what extent it matters how many miles are too much for a used carIf the owner was meticulous and paid attention to car care, then high mileage might not make that big of a difference. You can check the treadwear numbers, check the interior, examine the parts of the vehicle. If everything is in perfect condition, then you don’t have anything to worry about.

Similarly, if the car had a crappy owner who could not care less about the condition of their vehicle, then low mileage isn’t something you should consider.

Why does low mileage matter to car owners? – we can think of different reasons, but the most important one is insurance. The majority of insurance companies check your annual mileage and calculate the premium accordingly. They will ask you for the estimated annual mileage when you fill out the application. It’s crucially important to know approximate numbers to avoid any trouble.

Keeping track of your driving habits will essentially save you a lot of money. Your insurance rates will remain the same if your actual covered distance is similar to the estimated one. Unless you’re driving a supercar, you’ll probably be driving around 10,000 miles per year.

Insurance rates and the importance of mileage will vary from one country to another. It’s always better to be in the know beforehand. Once you cross the line of average mileage, it will be hard to go back.

Is mileage important when buying a used car anyway?

The role of mileage when buying a used automobile

If getting deceived isn’t one of the things on your bucket list, then you should care about the covered distance. Though it isn’t always the determining factor, it’s definitely something we should keep in mind if we want to buy a used car.

If you’re unsure whether the displayed numbers are accurate or not, you can always ask the car owner to transfer all the necessary documents. It could be the car title or the history reports that will give you information about the previous mileage. That way, you’ll also make sure that you’re buying from a trustworthy seller.

Is mileage important when buying a used car? – It certainly is. Not only does it give us information about the condition of various vehicles, but it also displays warning signs. Displayed numbers on the odometer show you whether the car is up and running or not. Many of you might argue with this statement, but trust me, the data depicts true information more often than not.

You won’t understand the importance of miles data unless you know what to look for. If you’re willing to buy a decent car that will last you through a lifetime, then the covered distance isn’t the only thing you should consider. But if you want the used car to be relatively new, then mileage can be the determining factor.

Which tools do people use to reduce mileage?

People mainly use the mileage correction and blocker tools to alter existing data and sell a vehicle for a better price. These two operate differently, however, they both deal with odometer-related issues.
You already know how important is mileage when buying a used car. Therefore, it shouldn’t be surprising to hear that people solve high-mileage problems with specific devices. Even though such actions aren’t ethical, I personally understand the intentions behind mileage correction.

Mileage correction tools

Mileage correction tools are devices that can reverse the odometer and remove unwanted miles. You can usually connect them to the vehicle directly and use them right away. However, the majority of such units are traceable. They can’t access the information that your vehicle stores on internal computers. As a result, diagnostic testers easily discover the correction.

Mileage blocker

A mileage blocker is a more ethical alternative. Instead of removing driven miles, it simply stops recording additional distance. Manufacturers created it for testing purposes to help customers check the functionalities of their cars effortlessly. This module offers untraceable performance – it doesn’t matter if your odometer records the data in km or miles.

Since the miles blocker stops recording mileage in control units, some people activate it on the highway. Some of them want to make up for existing discrepancies, while others want to earn more profit from selling their vehicles. Either way, it’s better to use this tool in a controlled environment.

If you simply want to check the performance of your car, buying a high-quality blocker tool is a great idea.


Why is mileage important when buying a used car? – well, it’s a debatable question. Yet, it’s undeniable that the data is something that deserves our attention. You should always take covered distance (be it high or low) with a grain of salt.

Check the accuracy of the displayed numbers and make sure the odometer wasn’t clocked. If the odometer data looks perfect, check the condition of the overall vehicle. As a rule, you’ll find the best option if you look at the whole picture, not just parts of it. Good luck!