Best Cars to Modify and Customise

Roman Danaev

Best cars3 February 2025

For some, a car is just a way to get around, something practical and straightforward. But for others, it’s more personal — a chance to show a bit of who they are. A car can feel like a blank canvas, ready for those little tweaks or big changes that make it stand out.

best-cars-to-modify

That’s the fun of customising. Even though manufacturers design models to suit everyone, they leave room for drivers to modify and make them their own. Of course, not every car is ideal for this. That’s why we’ve pulled together a list of the best cars to modify.

Toyota GT86 / Subaru BRZ

best-cars-to-modify

Used model price

From £17,500

Body type

Coupe

Gearbox type

Manual (6-speed), automatic (6-speed)

Doors

2

Seats

4

Performance

0-60 mph in 6.2 seconds

Engines

2.4L inline-4 (naturally aspirated)

Boot

237 litres

Segment

Mid-range value

Why this car?

Good noise, great handling

The Toyota GT86 and Subaru BRZ hit the market in 2012 and quickly became popular with driving enthusiasts. The models are built with a front-engine, manual, rear-wheel-drive setup and were made for those who love driving. The simple look and moderate power made them perfect for modifications.

Start with better tyres or an engine tweak, and then go even further with superchargers and suspension upgrades. The new Toyota GR86 improves on the original, but there’s still enough to customise.

BMW 3 Series

best-cars-to-modify

Used model price

From £15,400

Body type

Saloon

Gearbox type

Automatic (8-speed)

Doors

4

Seats

5

Performance

0-60 mph in 5.3 seconds

Engines

2.0L turbocharged inline-4 petrol, 3.0L turbocharged inline-6 petrol

Boot

481 litres

Segment

Mid-range value

Why this car?

Brilliant all-rounder

The BMW 3 Series is a sports saloon that has long been a favourite for car enthusiasts looking to add some extra performance. There are plenty of specialists who can take everyday family models and turn them into something special. BMW-approved names like Alpina and Schnitzer offer a range of fairly cheap modifications, all tested to maintain your factory warranty. A simple remap is a great starting point to unlock this car’s full potential.

Toyota Supra

best-cars-to-modify

Used model price

From £27,000

Body type

Coupe

Gearbox type

Automatic (8-speed)

Doors

2

Seats

2

Performance

0-60 mph in 3.9 to 4.1 seconds

Engines

2.0L inline-4, 3.0L inline-6 (turbocharged)

Boot

290 litres

Segment

Premium and luxury

Why this car?

A blast to drive

The Toyota Supra made its comeback in 2019 and revived a classic. With BMW-sourced parts under the hood, it’s got plenty of untapped performance potential. It’s rare to see a Supra on the road without some customisation, and that’s no surprise. It’s truly one of the easiest cars to modify — there are tons of body kits, engine upgrades, and suspension mods available.

The new Supra is also a prime choice for car enthusiasts looking to make it their own, just like the generations before it.

Mazda MX-5

best-cars-to-modify

Used model price

From £13,600

Body type

Roadster

Gearbox type

Manual (6-speed), automatic (6-speed)

Doors

2

Seats

2

Performance

0-60 mph in 5.7 to 6.5 seconds

Engines

Inline-4 (petrol, naturally aspirated, turbocharged)

Boot

130 litres

Segment

Mid-range value

Why this car?

Small and light

The Mazda MX-5 is all about pure driving pleasure. It’s lightweight, fun, and offered at a reasonable price. These are qualities that have made both the latest models and even cheap older ones favourites among car enthusiasts.

JDM fans, car lovers, and even Jeremy Clarkson are on board. Over time, the MX-5 has been turned into track day machines, rallycross cars, and even electric versions. If you’re looking for MX-5 inspiration, the UK Owners Club is a great place to start.

Nissan GT-R

best-cars-to-modify

Used model price

From £57,400

Body type

Coupe

Gearbox type

Automatic (6-speed dual-clutch)

Doors

2

Seats

4

Performance

0-60 mph in 2.9 to 3.0 seconds

Engines

3.8L V6 (twin-turbocharged)

Boot

315 litres

Segment

Premium and luxury

Why this car?

Incredibly easy to drive for maximum performance

The Nissan Skyline from the ‘80s and ‘90s became a legend. Fans love it for its mix of all-wheel drive and a turbocharged six-cylinder engine that gives it an edge over bigger rivals. When the Nissan GT-R hit the roads in 2009, it kept that legacy alive.

What was once seen as unhackable is now pretty common. Modified GT-Rs are everywhere, and some are tuning them to over 1600hp. Even with a few simple upgrades, you can easily push this project car to over 650hp.

VW Golf GTI

best-cars-to-modify

Used model price

From £16,000

Body type

Hatchback

Gearbox type

Manual (6-speed), automatic (7-speed dual-clutch)

Doors

5

Seats

5

Performance

0-60 mph in 5.9 to 6.2 seconds

Engines

2.0L inline-4 (turbocharged)

Boot

380 litres

Segment

Mid-range value

Why this car?

Practical package

The 1974 VW Golf GTI set the standard for hot hatches when it combined great speed with the practicality of a hatchback and cheap running costs. This recipe is still present in the latest models. The Golf provides a smooth, comfortable ride with just enough performance, easily handling both motorways and bumpy backroads.

This balance has earned the GTI a massive fan base and created a whole scene dedicated to modifying and tuning these iconic cars.

Ford Fiesta ST

best-cars-to-modify

Used model price

From £9,500

Body type

Hatchback

Gearbox type

Manual (6-speed)

Doors

5

Seats

5

Performance

0-60 mph in 6.0 seconds

Engines

1.5L Inline-3 (turbocharged)

Boot

292 litres

Segment

Budget-conscious

Why this car?

Detailed equipment for the price

The Ford Fiesta has really grown over the years and moved from being a simple city car to a sharp little ride, especially in the ST trim. If you’re into modding, there’s a lot you can modify to boost its performance.

What’s great is the Fiesta ST comes with a factory-approved upgrade from Mountune. This means you can add 40 extra horsepower and 80 Nm of torque without risking your warranty.

Audi TT

best-cars-to-modify

Used model price

From £11,900

Body type

Coupe, roadster

Gearbox type

Manual (6-speed), automatic )7-speed dual-clutch)

Doors

2

Seats

2, 4

Performance

0-60 mph in 4.2 to 5.2 seconds

Engines

2.0L inline-4 (turbocharged), 2.5L inline-5 (turbocharged)

Boot

280-305 litres

Segment

Mid-range value

Why this car?

Effortless to live with

The Audi TT looks sharp and handles well, but the higher-end models can be pretty expensive. Why not go for the 194hp Sport 40 TFSI and use the savings for some upgrades?

Start with a remap to get a bit more power from the 2.0-litre turbo — experts say you can squeeze out up to 40 extra horsepower. Then, improve the handling with some sportier dampers and springs. Finally, add a performance exhaust to give it a more aggressive sound.

Subaru WRX

best-cars-to-modify

Used model price

From £15,900

Body type

Sedan

Gearbox type

Manual (6-speed), automatic (CVT)

Doors

4

Seats

5

Performance

0-60 mph in 5.1 to 5.5 seconds

Engines

2.0L inline-4 (turbocharged), 2.5L inline-4 (turbocharged)

Boot

340 litres

Segment

Mid-range value

Why this car?

Comfortable, behaves like race cars

Subaru may be focused on hybrids and electric SUVs now, but let’s not forget the glory days of the WRX in rallying. The latest WRX and STI are fun cars to modify, but they aren’t on sale in the UK anymore. Picking up a used one and turning it into your own Colin McRae-inspired car is still an option.

There are plenty of specialists out there who can help you boost your turbo, increase the power, and tweak the suspension — all based on what you’re willing to spend.

Honda S2000

best-cars-to-modify

Used model price

From £9,500

Body type

Roadster

Gearbox type

Manual (6-speed)

Doors

2

Seats

2

Performance

0-60 mph in 5.4 seconds

Engines

2.0L inline-4 (naturally aspirated), 2.2L inline-4 (naturally aspirated)

Boot

280 litres

Segment

Budget-conscious

Why this car?

Good looks and well-engineered

The Honda S2000 may have been out of production since 2009, but it’s only become more sought-after over time. You can’t ignore its unique mechanical setup and high-revving engine. The engine itself is tough to improve, but there’s plenty you can do with the suspension and style.

You can add carbon fibre aero kits, modify the exhaust, and make other tweaks to give your S2000 a more personalised touch.

Citroën Saxo

best-cars-to-modify

Used model price

From £4,900

Body type

Hatchback

Gearbox type

Manual (5-speed), automatic (4-speed)

Doors

3, 5

Seats

5

Performance

0-60 mph in 7.5 to 8.5 seconds

Engines

1.0L inline-4, 1.1L inline-4, 1.4L inline-4, 1.6L inline-4 (petrol)

Boot

213 litres

Segment

Budget-conscious

Why this car?

Top handling, cheap to repair

The Citroen Saxo has been a popular choice in the car modification scene since the ‘90s, and it’s still a great option for a budget project car. You can pick one up for a low price, and there are plenty of affordable mods available to get started. Some enthusiasts strip it down to the chassis, especially the 1.1-litre version, but the 1.6-litre model offers a better foundation with its larger engine from the start.

Insuring Your Modified Car

Protecting your modified car requires more than standard insurance. Modified car insurance is made to cover vehicles with performance or cosmetic modifications so that their true value is accounted for.

If you’re building a project car, Carplus helps keep ownership within reach. Please keep in mind that while we don’t offer insurance ourselves, our financing options and partnerships make it easier to afford and maintain your car. With Carplus, you’ll be able to cover the costs of your ideal car and safeguard your investment!

Conclusion

So, that’s a wrap on our guide to modifying cars. We hope this list has given you some great ideas, no matter if you’re a seasoned enthusiast or just getting started with your project car. From iconic classics to fresh models, these great cars offer endless possibilities for upgrades. And lastly, remember that Carplus helps make it happen by offering financing options that work for you.

Your monthly payment
£363.23
Loan amount:£16,000
Length of loan:60 months
Interest rate:12,9%
Amount of interest£5,793.84
Total payment:£21,793.84
Check eligibility right now with no impact on credit score and get your personalised, no-obligation quote 🚀

FAQ

Which car is the easiest to modify?

The Toyota GT86/Subaru BRZ is one of the best cars to modify, thanks to aftermarket support and a strong modding community. Also, their simple layout and strong performance potential make them perfect for enthusiasts looking to upgrade.

What is the best car to tune?

The Nissan GT-R is a top choice if you’re eager to modify a car. With the right mods, it can handle major power boosts and improved performance, all while keeping reliability intact.

What should I modify first on my car?

Start with simple performance upgrades. It could be a new intake or exhaust to boost airflow and engine efficiency. After that, modify the suspension or brakes for better handling, then move on to more advanced power mods and cosmetic changes.

Are modded cars legal in the UK?

Yes, modded cars are legal as long as they meet road safety and emissions standards. All modifications must be declared to your insurance provider, and the car needs to be roadworthy. Overall, you need to stay within legal limits for noise, emissions, and performance.

Which mods increase HP?

Consider a cold air intake, performance exhaust, or adding a turbo or supercharger. Remapping the ECU can also help, all of which improve airflow and engine efficiency for more power.

Is a stage 1 remap safe?

Yes, if done by a trusted tuner. It adjusts the car’s ECU to increase power, but the changes are usually within safe limits for your engine. Just make sure it suits your car’s setup to avoid potential issues.