Ford Focus ST Mk2 (ST225) Buying Guide

Ford Focus ST Mk2 (ST225) Buying Guide

The Ford Focus ST Mk2, also known as the ST225, is a hot hatch that has earned a loyal following since its release in 2006. With its 2.5-litre turbocharged Duratec engine, it delivers a blend of performance, practicality, and affordability that still appeals to enthusiasts today. If you’re considering buying one, there are several key areas to inspect to ensure you’re getting a well-maintained example. This guide will walk you through what to look for when purchasing a Ford Focus ST Mk2.

Are you looking for parts? Check out our dedicated page here for the Focus ST Mk2 (ST225)

Engine and Performance

The heart of the ST225 is its Volvo-derived 2.5-litre 5-cylinder turbocharged engine, producing 225 horsepower. While this engine is robust, it’s not without its issues. Here’s what to check:

1. Turbocharger: The turbo is a common failure point. Listen for unusual whistling or whining noises, which could indicate turbo wear. Blue smoke from the exhaust under acceleration is another red flag, suggesting oil is leaking into the turbo.

2. Cooling System: The ST225 is known for cooling system issues. Check for coolant leaks, especially around the thermostat housing and radiator. Overheating can lead to serious engine damage, so ensure the cooling system is in good condition.

4. Oil Consumption: Some ST225s consume oil excessively. Check the oil level and ask the seller about their oil top-up routine. Regular oil changes are crucial for this engine, so look for a service history that reflects proper maintenance.

Transmission and Drivetrain

The ST225 comes with a 6-speed manual transmission, which is generally reliable but can develop issues over time:

1. Gearbox: Test all gears to ensure smooth engagement. A crunchy or stiff gear change, especially into third gear, can indicate synchromesh wear, or need for hardware replacement. 

2. Clutch: The clutch can wear out prematurely, particularly if the car has been driven hard. Check for slipping under acceleration or a high bite point, as these are signs the clutch may need replacing. If your clutch is slipping, consider swapping it out to the LUK Ford Focus RS Mk2 kit to handle the extra torque

3. Driveshafts and CV Joints: Listen for clicking or knocking noises when turning, which could indicate worn CV joints. Driveshaft issues are less common but worth checking. This is especially noticeable on cars that are lowered from stock.

Suspension and Steering

The ST225’s handling is one of its strong points, but the suspension components can wear over time:

1. Springs and Dampers: Inspect the suspension for leaks or corrosion, particularly on the rear shocks. Broken springs are a known issue, so listen for clunking noises over bumps. Check out our range of suspension products for your ST225 here

2. Bushings and Mounts: Worn bushings can lead to vague steering and a less precise driving experience. Check for excessive play in the steering and inspect the condition of the engine and gearbox mounts.

3. Alignment and Tyres: Uneven tyre wear can indicate alignment issues or worn suspension components. Ensure the tyres are in good condition, as the ST225’s performance relies on proper grip.

Interior and Electronics

The ST225’s interior is well-built but can show signs of wear, especially in higher-mileage examples:

1. Seats: The Recaro seats are a highlight, but they can suffer from bolster wear or sagging. Check for tears or excessive wear on the fabric or leather.

2. Electronics: Test all electrical components, including the air conditioning, infotainment system, and windows. Faulty window regulators are a common issue.

3. Trim and Build Quality: Inspect the interior trim for loose fittings or rattles. While not a major concern, these can be annoying and may require attention.

Bodywork and Rust

The ST225’s bodywork is generally durable, but there are areas prone to rust:

1. Wheel Arches: Check the rear wheel arches for signs of rust, as this is a common issue. Particularly where the arch meets the rear bumper.

2. Sills and Underside: Inspect the sills and underside of the car for corrosion, particularly if the car has been driven in winter conditions.

3. Paintwork: Look for scratches, dents, or signs of repainting, which could indicate previous damage.

Service History and Modifications

A full service history is highly desirable when buying an ST225. Regular oil changes and maintenance are crucial for the longevity of the turbocharged engine. Be cautious of heavily modified examples, as these may have been driven hard or poorly tuned. If the car has been modified, ensure the work has been carried out by a reputable specialist.

Check out our maintenance guide for the Focus ST Mk2 here

Test Drive

A thorough test drive is essential to assess the car’s condition. Pay attention to:

• Engine performance and turbo response.  
• Gearbox smoothness and clutch operation.  
• Suspension noise and handling.  
• Brake performance, including any vibrations or uneven braking.

Conclusion

The Ford Focus ST Mk2 (ST225) remains a compelling choice for hot hatch enthusiasts, offering a unique combination of performance and practicality. However, like any performance car, it requires careful inspection to avoid costly repairs. By checking the engine, transmission, suspension, and bodywork, and ensuring the car has a solid service history, you can find a well-maintained example that will provide years of driving enjoyment. Take your time, do your homework, and you’ll be rewarded with one of the most characterful hot hatches of its era.  

Happy hunting!