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Top 10 Modifications for a Mk7 Ford Fiesta ST

The Mk7 Ford Fiesta ST is a compact hatchback that packs a punch with its 1.6L turbocharged engine, sport-tuned suspension, and agile handling. Driving enthusiasts love the Fiesta ST for its performance, but like many cars, it can benefit from modifications to enhance its capabilities. If you’re looking to upgrade your Fiesta ST, here are the Top 10 Modifications for a Mk7 Ford Fiesta ST that can take your driving experience to the next level:

1. Cold Air Intake

Top 10 Modifications for a Mk7 Ford Fiesta ST

A cold air intake is an easy and affordable modification that replaces the stock air intake system with a larger, more efficient system. This increased airflow can improve horsepower and torque, making your Fiesta ST even more fun to drive. Mishimoto makes a high quality intake kit with a great sound, click HERE to check it out!

2. Exhaust


Upgrading your Fiesta ST’s exhaust system can improve its performance and give it a more aggressive sound. A high-quality aftermarket exhaust system like this Mishimoto unresonated system can reduce backpressure and increase airflow out of the engine, resulting in improved horsepower and torque.

See our blog post on the advantages and disadvantages of Aftermarket Exhausts

3. Intercooler

Mishimoto Intercooler

Adding an intercooler can help dissipate the heat generated by the turbocharged engine, keeping it running at peak performance. A larger intercooler can also increase power output and improve overall engine efficiency. Mishimoto makes a great intercooler, but be sure to pair your intercooler with a set of charge pipes to get the maximum performance gains!

4. ECU Tune

Top 10 Modifications for a Mk7 Ford Fiesta ST

An ECU tune can optimize your engine’s performance, resulting in increased horsepower and torque, better throttle response, and improved fuel efficiency. It’s often the most cost-effective way to improve your Fiesta ST’s overall driving experience.

5. Suspension Upgrades

Top 10 Modifications for a Mk7 Ford Fiesta ST

Upgrading your suspension can improve your car’s handling, reduce body roll, and provide a more stable and predictable driving experience. It’s a popular modification among Fiesta ST enthusiasts, and there are many aftermarket options available. Often lowering springs actually provide a smoother ride than the standard ST suspension, which is known for being quite harsh.

Ford Fiesta Lowering Springs

6. Wheels and Tires

Upgraded Tyres

Upgrading your wheels and tires can improve your car’s performance in several ways, including better traction, improved acceleration, braking, and handling. It can also give your car a more aggressive and sporty look. No Top 10 Modifications for a Mk7 Ford Fiesta ST list would be complete without including upgraded wheels and tires.

The Mk7 Ford Fiesta ST uses 205/40/17 size tires and it’s best to stick to that.

204/40/17 Tyres

7. Brake Upgrades

If you plan to push your Fiesta ST to its limits, upgrading your brakes is a good idea. Upgraded brake pads, rotors, and calipers can improve stopping power and reduce brake fade during hard driving. We recommend EBC pads for a good mix of stopping power and longevity (available HERE)

8. Short-Throw Shifter

Top 10 Modifications for a Mk7 Ford Fiesta ST

A short-throw shifter can make your shifts even quicker and more precise, reducing the distance between shifts and making your car more fun to drive. It’s a relatively inexpensive modification that can have a big impact on your driving experience. There are many short shift kits available on Amazon.

9. Lightweight Flywheel

A lightweight flywheel can improve your car’s acceleration and throttle response. By reducing the rotating mass of the engine, it can help it rev more quickly and reduce drivetrain loss, improving overall efficiency.

10. Sound System Upgrades

Upgrading your sound system may not improve your car’s performance, but it can enhance your driving experience. Upgraded speakers, a subwoofer, and a new head unit can provide better sound quality, making your music sound better than ever.

In conclusion, the Mk 7 Ford Fiesta ST is a fun and capable car that can benefit from a few modifications to further enhance its capabilities. Whether you’re looking for more power, better handling, or a more enjoyable driving experience, these Top 10 modifications for a Mk7 Ford Fiesta ST can help take your ride to the next level.