If you are attached to your petrol car or own a classic and want to make the switch to an EV, one option is to convert your existing petrol car to electric. This may seem like a daunting task, but with the right guidance and information, it is possible to convert your petrol car to an electric vehicle.
In this article, we will explore how to convert a petrol car to an electric car, how much it costs and what are the challenges of a conversion.
Can I convert my petrol car to electric?
You can convert a petrol car to an electric vehicle with the right knowledge, tools, and expertise. However, this is a huge challenge and you need to make sure it’s feasible to convert your specific make and model of car. Some cars are more suitable for electric conversions than others, depending on their weight, size, and other factors that we will discuss further in the article below.
Is it legal to convert a petrol car to electric?
It is legal to convert a petrol car to electric, but there are specific requirements that must be met. Any converted vehicle must take an Individual Vehicle Approval (IVA) test to make sure that it meets the necessary safety standards.
The IVA test includes inspections of the converted vehicle’s braking system, suspension, steering, and electrical components, among other aspects. The most important part of the test is to make sure that the converted vehicle meets the zero emissions standards set by the government.
How do you convert a petrol car to electric?
Converting a petrol car to an electric car involves a huge amount of work and expertise in both mechanics and electrical engineering. Here are the general steps involved in converting a petrol car to electric:
- Remove the engine
The first step is to remove the old engine, fuel system, and exhaust system.
- Install electric motor and batteries
A suitable electric motor needs to be chosen and installed in the car. The batteries should also be chosen and installed in a manner that balances the car’s weight distribution. The electric motor should be connected to the car’s transmission or drive shaft, remember, EVs do not have gears like traditional ICE cars.
- Wiring the new system in
The electrical system needs to be rewired to accommodate the new electric motor and batteries. This requires expertise in electrical engineering and programming to ensure that the car operates correctly and safely.
- Cooling and heating systems will be needed
The electric motor and batteries generate heat and require a cooling system to prevent overheating. The car’s heating system may also need to be modified to run off the electric power.
- Testing and fine-tuning
Once the conversion is complete, the car needs to be tested to ensure that it operates safely and efficiently. The car’s performance may need to be fine-tuned to optimize its range and power output.
- Apply for an Individual Vehicle Approval test
You need to fill in this IVA 1C application form for passenger cars with less than 8 seats.
Companies that convert petrol cars to electric
Converting a petrol car to an electric car is a really complex process and there are plenty of companies around who will complete that conversion for you. Let’s look at some of the options:
London Electric Cars
London Electric Cars are based in London and specialise in converting petrol cars to electric. They offer a range of conversion options, from basic conversions to complete restorations.
Electrogenic are from Oxfordshire, Electrogenic specializes in converting classic and vintage cars to electric. They also sell ready-to-drive electric classic cars.
Electric Classic Cars
Electric Classic Cars, based in Wales, convert your classic to electric, building your electric classic to your specifications.
How much does it cost to convert a car to electric?
The cost of converting a car to electric can vary widely depending on various factors such as the size of the car, the type of electric motor and batteries used, the range and performance desired, and the complexity of the conversion. However, a general estimate for converting a petrol car to electric in the UK is between £20,000 to £30,000.
This cost includes the electric motor, batteries, controller, charging system, and other necessary components, as well as the cost of labour for the conversion. The cost can be higher for larger or more complex cars or for those that have had a lot of customisation.
It is probably a lot more cost-effective to buy an electric car from a manufacturer instead of attempting a conversion. Additionally, government grants and incentives are available to new EVs that are not applicable to conversions, which further adds to the appeal of a new EV over a conversion.
Can you convert a petrol car to an electric hybrid?
You can convert a petrol car to a hybrid, although it can be much more complex than converting to a fully electric vehicle. The process involves adding an electric motor, battery pack, and a hybrid control system to the existing petrol engine, allowing the car to use both the normal engine and the electric motor.
Can I convert a classic car to electric?
It’s fine to convert a classic car to electric, lots of classic cars have been converted over the years. There are several advantages to converting a classic car to electric, including improved performance, reduced maintenance, and the environmental benefits of using an electric powertrain!
Converting a classic car to electric presents a unique set of challenges, some of which include:
- Space constraints
Classic cars often have limited space for accommodating modern EV components, such as the battery pack, electric motor, and charging system. Custom solutions may be needed if you are going to fit everything in.
- Weight distribution
Adding a battery pack and electric motor may change the weight distribution of the vehicle, which can impact its handling and performance. Careful planning and placement of components are needed to help maintain the vehicle’s balance.
- Preservation of original appearance
Maintaining the classic car’s original look is important. This might involve finding creative solutions to integrate the EV components without altering the car’s exterior or interior too much.
- Integration of new and old systems
Classic cars often have older, less sophisticated electrical and mechanical systems that may not be directly compatible with modern EV components. Integrating the new components with the existing systems can require a good understanding of both the old and new technologies.
- Availability of parts
Some classic car parts might be rare or difficult to find, which can make it challenging to adapt the vehicle for an electric conversion. Custom fabrication or modification of parts may be necessary in some cases.
Can I convert a diesel car to electric?
It is possible to convert a diesel car to electric in the same way that you would a petrol car. The process is the same, but there are a few additional considerations for owners of diesel cars:
Diesel engines are generally heavier and larger than petrol engines, which may affect the weight distribution and available space for the electric components.
Diesel vehicles typically have higher torque and lower RPM ranges than petrol vehicles. This may mean that you have to select an electric motor that can provide a similar driving experience.
What’s the easiest car to convert to electric?
The easiest car to convert to electric is typically a small, lightweight vehicle with a simple mechanical layout and loads of space for the parts needed, such as the battery pack, electric motor, and charging system. Some popular models for electric conversions in the UK include the Volkswagen Beetle, Porsche 911, Mazda MX-5 Miata, and various classic British roadsters like the MG Midget or Triumph Spitfire.
Is there a kit to convert a car to electric?
There are plenty of electric vehicle conversion kits on the market that can help you convert a car to electric. All of the conversion companies listed in this article sell conversion kits.
The kits usually contain an electric motor, motor controller, charger, batteries, and all the other parts you need like wiring harnesses, contactors, and fuses.
Double (and triple) check that the kit is compatible with your specific car, some kits are designed for particular cars, while others may be more generic. Also, check that the kit includes a charging system compatible with your home charger, the best EV charger installers will be able to advise on the compatibility. Also, check the charging infrastructure in your area and that the company selling the kit provides customer support and aftercare if needed.
Can I still use public chargers with a converted car?
Yes, you should still be able to use public chargers with a converted car, as long as your car’s charging system is compatible with the charging stations available. You might find that you are unable to use fast or rapid chargers. Do some research on charging connectors available at the charging stations in your area and make sure the system you are using for the conversion is compatible.
Are there any downsides to converting a petrol car to an electric car?
So far in this article, we have looked at how to convert a petrol car to an EV, we should run through the potential downsides for you to consider before taking the plunge!
- The cost is high!
EV conversions can be expensive, depending on the components and labour required.
- Missing out on EV safety features
Morden EVs have a range of safety features that converted cars will not benefit from. Such as automatic emergency braking, regenerative braking and blind-spot monitoring systems.
- Range limitations
Depending on the battery capacity installed during the conversion, the range of the converted vehicle will generally be less than that of an electric vehicle you can buy new.
- Resale value
A converted electric vehicle may have a lower resale value compared to an original electric vehicle or an unmodified petrol car. Potential buyers might be concerned about the quality of the conversion and the availability of replacement parts and support.
- Technical expertise
Converting a car to electric requires a certain level of technical expertise and mechanical skill. If you’re not experienced in this area, you may need to rely on a professional, which can add to the cost.
Converted vehicles usually do not come with the same level of battery warranty and support as electric vehicles that you buy new, which can be a concern if you encounter issues with the conversion.
The final word on converting your petrol car to electric
Converting your petrol car to an electric vehicle could be a great project for someone with mechanical and electrical know-how. If you get it right, you will enjoy the benefits of lower operating costs, reduced emissions, a quieter mode of transport and improved performance.
You really need to carefully plan and research the process, taking into account factors such as the choice of components, space constraints, weight distribution, and legal and regulatory compliance.
It’s a complex job and luckily there are plenty of expert companies out there for you to speak to and take advice from.
Ready to dive even deeper...
John is the Editor and Spokesperson for Electric Car Guide.
With over 20 years of writing experience, he has written for titles such as City AM, FE News and NerdWallet.com, covering various automotive and personal finance topics.
John’s market commentary has been covered by the likes of The Express, The Independent, Yahoo Finance and The Evening Standard.