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Is the 2007 Ford Focus ST reliable?

The 2007 Ford Focus ST is generally considered a reasonably reliable used performance hatch, provided it has been well maintained; as with any older turbocharged car, reliability hinges on upkeep and mileage.


To understand reliability in context, it helps to know that the 2007 Focus ST is a Mk2 Focus ST variant with a turbocharged five‑cylinder engine. It delivers strong performance for a compact hatch, but its age means components can wear, and maintenance history matters more than the model year alone. Below is a structured look at reliability, common issues, and maintenance practices that influence long-term dependability.


Reliability snapshot


Across trusted automotive surveys and owner feedback from the era, the Focus family generally lands in an average reliability tier for its time. The ST version, while praised for its performance and driving dynamics, tends to incur higher maintenance costs and repair frequency than its non‑turbo siblings. Long-term reliability for any 2007 model depends largely on service history, mileage, and how promptly the car has been repaired when issues arise.


Common issues to watch for


Before inspecting or purchasing, know the recurring trouble spots reported by owners and mechanics.



  • Engine and turbo subsystem: Boost control problems, turbo seals and intercooler hoses, potential oil leaks around the turbo, and PCV system wear can appear as the car ages.

  • Clutch and drivetrain: Clutch wear is common in higher-mileage or enthusiast-driven examples; the left-hand side with the manual transmission and associated flywheel can be a maintenance focus.

  • Cooling and electrical: Radiator hoses, water pump wear, radiator fans, and occasional electrical gremlins (fuses, sensors, or dashboard wiring) show up with age.

  • Suspension and brakes: Worn bushings, ball joints, wheel bearings, and brake components can show signs of wear earlier in a used, higher-mileage car.


Concluding this section, a careful pre-purchase inspection should prioritize the turbo area, cooling system, ignition components, clutch and flywheel, and suspension wear to gauge expected reliability.


Maintenance priorities to maximize reliability


Proper upkeep is the best predictor of reliability for a 2007 Focus ST. The following practices are commonly recommended by independent shops and experienced owners.



  • Keep up with oil changes using the recommended grade and frequency; synthetic oil is often advised for turbo engines.

  • Follow the timing belt (or timing service) interval exactly as specified by Ford for the 2.5L Duratec inline‑five; a belt failure can cause serious engine damage.

  • Inspect and replace cooling system components proactively (radiator hoses, water pump, thermostat) to prevent overheating.

  • Regularly inspect the turbo, intercooler hoses, and vacuum lines for cracks or leaks; address boost control issues early.

  • Monitor the clutch and gearbox for wear, especially on spirited driving or at higher mileages; replace the flywheel or clutch if necessary.

  • Replace worn ignition coils, spark plugs, and related electrical components to maintain smooth running.


Concluding this maintenance-focused list, a well-documented service history and timely repairs significantly improve the likelihood of dependable operation in a 2007 Focus ST. With diligent care, many examples can remain reliable well into higher mileages.


Real-world ownership and cost considerations


Owner experiences vary, but many ST drivers report a rewarding ownership experience thanks to performance and handling. Costs can be higher than for non‑turbo Focus models due to parts, specialized maintenance, and potential wear on the clutch, turbo seals, and suspension components. Parts availability remains decent thanks to a broad aftermarket and Ford’s global parts network, though some specialized components may command premium prices on older platforms.


Cost of ownership considerations


When evaluating a 2007 Focus ST, consider these factors that commonly influence ongoing costs and reliability.



  • Labor-intensive maintenance tasks (timing belt/related components, clutch work) can be more expensive.

  • Turbocharged power means higher fuel usage and more frequent maintenance if driven aggressively.

  • Suspension and brake wear can be pronounced with age and mileage; plan for possible bushings, ball joints, rotors, and pads.

  • Electrical and sensor-related repairs may arise as the car ages; a history of ignition coil or MAF sensor issues is not unusual.


Concluding this section, the 2007 Focus ST offers a compelling drive for enthusiasts, but buyers should budget for maintenance costs associated with a turbocharged, aging performance car.


What buyers and owners say


In the automotive community, opinions about the 2007 Focus ST hinge on condition and maintenance history. When well cared for, many owners report reliable operation, solid performance, and the car’s practicality as a daily driver with strong on-road performance. Conversely, a neglected example or one with high mileage may exhibit wear in the clutch, cooling system, turbo plumbing, and electrical components, leading to costly repairs if not addressed promptly.


Fuel economy, insurance, and reliability expectations


Compared with modern hot hatch rivals, the Focus ST’s fuel economy tends to be modest, and insurance costs can reflect its performance orientation. Reliability expectations should be tempered by the car’s age and the care it has received; a thorough pre-purchase inspection and maintenance records are strong predictors of long-term dependability.


Summary


Bottom line: the 2007 Ford Focus ST can be a dependable used performance hatch if you buy a well-maintained example and continue regular service. The model’s turbocharged engine and performance hardware require attentive maintenance, especially as miles accumulate. For prospective buyers, prioritize a comprehensive pre-purchase inspection, verify the timing belt/drive service history, confirm the condition of the clutch and turbo-related components, and review the cooling and electrical systems. With proper care, a 2007 Focus ST can deliver rewarding performance and reliable operation for years to come.

Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.