Australia initially missed out on the early years of the Mk8 Fiesta ST, but the wait, according to new car reviews and the fanbase, proved worthwhile.

The Mk8 Fiesta ST is equipped with a turbocharged 1.5-litre 3-cylinder engine, front-wheel drive, a limited-slip differential, and a 6-speed manual gearbox in a compact hatch.

Despite being a 3-cylinder, the Mk8 Fiesta ST boasts a superior power-to-weight ratio compared to the S14 Nissan Silvia, a car renowned for its performance credentials.

The 2022 update, known as Mk8.5, increased torque over the pre-update version, enhancing its overall performance.

However, the update, while introducing more tech and visual enhancements, removed certain safety features to maintain competitive pricing.

While the Fiesta ST is available as a 3-door or 5-door hatch in international markets, Australia only received the more practical 5-door body style.

Contrary to perceptions, the Fiesta ST is manufactured in Germany, distinguishing it even from some BMW, Audi, and Mercedes-Benz models.

Despite its appealing specifications, concerns about poor build quality and reliability issues have emerged, impacting its long-term appeal. Further exploration is advised for potential buyers.

What goes wrong with a used Ford Fiesta ST (Mk8)?

Exterior:

Early Mk8 models in Europe encountered issues like missing paint near the rear bar and rear wing, delamination of the headlights’ inner film, and problems with window rubber and windscreen. However, these issues were reportedly addressed by the time the STs reached Australia.

Some Australian owners noted weakness in their tailgate struts, but this is considered an easily fixable problem.

Interior:

Occasional reports mention glitches with the SYNC 3 infotainment system and digital gauges, though these problems usually resolve on their own.

Rattles have been reported by a few owners, particularly in models equipped with the factory sunroof option.

The most frequently reported issue is a clicking or knocking sound from the steering column. While some owners found no resolution after multiple inspections by Ford, independent mechanics have offered solutions.

Opting for an independent mechanic over a dealership service centre might yield better results.

Inconsistency exists in how dealerships address the steering column issue. Some owners report successful fixes by Ford, while others claim their dealership dismissed it as an unavoidable occurrence.

It is emphasised that this issue should be addressed and fixed, challenging any notion that it is an acceptable problem.

Mechanical:

The Mk8 Ford Fiesta ST is equipped with the 1.5 Ecoboost engine, which thankfully features a timing chain, unlike the problematic wet belt timing belt found in the 1-litre version of the engine.

The wet belt in the 1-litre engine deteriorates when exposed to oil, potentially leading to oil pump blockage or premature belt breakage, posing a significant risk to the engine.

All Fiesta ST models have a timing chain, but it’s essential to note that post-Feb 2019 models reverted to a wet belt for the oil pump, with a service interval of 240,000km or 10 years.

Replacing this belt requires removing the timing chains and sump, making it a 6-7 hour job, and it might become a costly and challenging task for older cars.

Pre-Feb 2019 models have a gear-driven oil pump, connected to the balance shaft, but they face issues with the rubber-mounted balance shaft drive gear. When the rubber fails, the balance shaft and oil pump cease to turn, resulting in a loss of oil pressure and potential engine damage.

Despite short-term reliability, these engines can experience oil leaks from the timing cover, oil sump, and oil cooler. Additionally, turbo issues and occasional high-pressure fuel pump failures may occur, although they are not considered common.

Many reliability issues are often related to modifications, as the Fiesta ST is a popular tuning platform capable of achieving high horsepower. Buyers are advised to exercise caution and avoid modified vehicles when purchasing to ensure long-term reliability.

While the Fiesta ST offers a great tuning platform and performance potential, it’s crucial to be cautious with modifications and consider the potential long-term risks associated with certain engine components.

Should you buy a used Ford Fiesta ST (Mk8)?

If considering a purchase, a Mk8 Fiesta ST with a comprehensive service history and no signs of abuse receives a tentative thumbs-up from us.

It’s essential to acknowledge that potential mechanical issues could emerge, and even with an impeccable service history, only time will unveil the Mk8 Fiesta ST’s long-term viability.

Renowned as one of the most enjoyable cars money can buy, the Mk8 Fiesta ST is practical, fuel-efficient, safe, and holds its value. Nevertheless, for those contemplating long-term ownership, it’s wise to be prepared for potential challenges down the road.