Premium Modified Cars For Sale
Explore our handpicked collection of high-performance modified cars. We only take on the best examples of modified vehicles and have them professionally prepared for sale. We particularly specialise in BMW, Audi, SEAT, VW and Mercedes. With a focus on quality and performance, we are sure to have the perfect modified car for you.
Clean Modified Cars
All our modified cars are well maintained, and looked after. We ensure all cars we buy and sell are in the best possible condition for their new owner.
Service History
Every modification is fully documented with detailed build specifications, dyno results(where applicable), and complete service history for absolute peace of mind.
Aftercare Support
When you buy modified cars from us, you receive ongoing maintenance advice from our team. We are always on hand to help with any questions you may have.
Modified Cars For Sale
Browse our latest selection of modified cars available for immediate purchase. From subtle ECU remaps to complete engine builds, our modified cars are for customers who are after that little bit more than stock.
2017 Bmw 1 Series M140i
3.0 Hatchback Petrol Auto Euro 6 (S/s) 5dr
2016 Bmw 1 Series M140i
3.0 Hatchback Petrol Auto Euro 6 (S/s) 5dr
2014 Seat Leon Cupra 280
2.0 Tsi Euro 6 (S/s) 3dr
2013 Mk7 Volkswagen Golf Gti
2.0 Tsi Euro 6 (S/s) 3dr
2007 Vw Golf Gti Edition 30
2.0 Tfsi Manual Euro 6 5dr
2007 Seat Leon Cupra K1
2.0 Tfsi Euro 6 5dr
2003 Subaru Impreza Sti Jdm
2.0 Turbo Awd 5dr
1996 Subaru Impreza Wrx
2.0 Turbo Awd 5dr
2008 Seat Leon Cupra K1
2.0 Tfsi Euro 6 5dr
The Best Modified Cars Built to Exacting Standards
At ASM Performance Cars, we're enthusiasts first and foremost. We understand what makes the best modified cars truly exceptional, and we apply those standards to every vehicle in our inventory.
The attention to detail on my modified BMW M4 was exceptional. ASM's expertise and aftercare support made the entire experience smooth and reassuring.
— James H., Hampshire
Performance Verified
All of our modified cars are from reputable tuners in the UK, with the likes of R-Tech, MRC, Infinite Performance, and many more.
High Quality Parts
We only use respected aftermarket parts from premium manufacturers, never compromising on quality.
Maintenance Advice
We offer maintenance advice to all our customers. We are always on hand to help with any questions you may have.
Frequently Asked Questions
What documentation do your modified cars come with?
All our modified cars for sale come with comprehensive documentation depending on the vehicle. Documentation can include modification specifications, dyno sheets showing performance figures, receipts for parts and labour, and a complete service history.
Are the modifications road-legal in the UK?
Yes, we ensure all our modified cars comply with UK road regulations. This includes appropriate emissions standards, noise regulations, and safety requirements. We provide guidance on any MOT or insurance considerations.
How does buying a modified car affect insurance?
Insurance requirements vary for modified cars. We provide detailed modification documentation for insurance purposes and can recommend specialist insurers who understand and fairly price policies for modified vehicles.
Do you offer warranties on modified cars?
We offer limited warranties on specific components and modifications with external, third party suppliers. Each vehicle's warranty details are clearly explained, covering workmanship and certain parts. Extended warranties are available for additional peace of mind, at an extra premium.
Can I further modify a car?
Absolutely. Many clients purchase our modified cars and then proceed to expand on the build, opting for forged engines, hybrid turbos and many other upgrades.
How do I maintain a modified car?
We are able to provide you with maintenance guidelines specific to each modified car. Our aftercare service includes ongoing technical support, so if you are ever in doubt just get in touch.
Found a Modified Car You Want?
Get in touch with us today and take the first step towards driving your modified car. Our expert team is on hand to help you every step of the way.