Ford Focus ST Mountune M365: 360HP Upgrade Review

The Ford Focus ST has long been a favorite among enthusiasts for its balance of fun, practicality, and speed. When Mountune applies its expertise, this hot hatch transforms into something extraordinary. With significant boosts in power and torque, it challenges even higher-end rivals while retaining everyday usability. This review delves into what makes the Mountune-tuned Focus ST a compelling choice.

Engine and Performance Enhancements

At the heart of the standard Ford Focus ST sits a 2.3-liter turbocharged four-cylinder engine producing 276 horsepower and 310 lb-ft of torque. Mountune’s m365 kit elevates this to 360 horsepower and 413 lb-ft, a substantial leap that redefines the car’s capabilities. Peak torque arrives at just 3,500 rpm, with maximum power at 5,500 rpm, providing a broad and accessible powerband.

This upgrade means acceleration is explosive across gears, often eliminating the need for downshifts during overtakes. Sub-five-second 0-60 mph times are achievable, and top speeds exceed 155 mph, making it suitable for high-speed venues like the Autobahn. Real-world tests confirm this punchy delivery, with the engine pulling strongly from low revs without excessive lag.

Unlike more peaky setups, the Mountune tune offers a linear surge that feels natural and controllable. Dyno runs suggest outputs could even surpass claims, potentially hitting 280 bhp in milder configurations, but the m365 pushes boundaries further. Fuel economy remains respectable at around 30 mpg in mixed driving, thanks to efficient tuning that doesn’t compromise efficiency.

Chassis Dynamics and Handling

The Focus ST’s chassis is already competent, featuring an electronically controlled limited-slip differential that shines with added power. Mountune’s modifications handle the extra violence effectively, with minimal torque steer on grippy tires like Michelin Pilot Sport Cup 2s. On standard PS4S tires, expect more wheelspin, adding character but demanding skill.

Body control is sharp, though without a full mechanical differential upgrade, it can feel slightly loose in aggressive corners compared to rivals like the Seat Leon Cupra. The suspension setup absorbs bumps well, maintaining composure on twisty roads. Steering is precise and communicative, rewarding driver inputs with immediate responses.

In track scenarios or spirited drives, the front end copes admirably but nears its limits with 413 lb-ft. Braking is strong, with progressive feel that inspires confidence during hard stops. Overall, it’s a textbook hot hatch: playful yet planted.

Transmission Options

Mountune now supports both manual and automatic transmissions, broadening appeal. Manuals were the initial focus, but demand from markets like Australia and Taiwan has driven auto compatibility. The six-speed manual shifts crisply, with a rev-matching feature enhancing heel-toe downshifts. Automatics deliver seamless shifts under load, maintaining momentum effortlessly.

In straight-line tests, the tuned ST outperforms stock RS models in many acceleration brackets, thanks to its lighter weight (around 1,394 kg vs. RS’s 1,476 kg) and torque advantage. Flexibility in higher gears is exceptional, ideal for real-world scenarios.

Interior Comfort and Practicality

Despite the performance focus, the Focus ST remains family-friendly. The cabin offers decent space for four adults, with 375 liters of boot capacity—ample for weekend trips. Materials are solid, with supportive Recaro seats gripping occupants firmly during hard driving.

Infotainment includes a responsive touchscreen with Apple CarPlay and Android Auto. Digital gauges are customizable, aiding quick glances at vital stats. Build quality holds up well, though some plastics feel budget-oriented.

• Spacious rear seats for class
• Generous boot space
• Comfortable long-distance cruiser
• Premium audio options available

Design and Styling Touches

Mountune offers aesthetic upgrades like spoilers, graphics, and wheels to personalize the look. The standard ST’s aggressive stance—with flared arches and large alloys—looks purposeful. The m365 kit integrates seamlessly, avoiding a bolted-on appearance.

LED headlights and a honeycomb grille enhance road presence. At the rear, quad exhausts hint at the power within, complemented by Mountune badges for bragging rights.

Reliability and Ownership Considerations

While thrilling, note that Ford no longer provides warranty on Mountune-equipped cars. However, Mountune’s engineering stays close to OEM parameters, minimizing reliability risks. Regular maintenance is key, especially for the turbo setup under higher stress.

Running costs are reasonable: insurance groups are manageable for the performance, and parts availability is excellent due to Ford’s network. Resale value holds strong for tuned models among enthusiasts.

Comparisons with Rivals

Against the Focus RS, the Mountune ST is lighter and often quicker in straights, with a smoother power delivery. The RS feels peakier, while the ST surges relentlessly post-2,000 rpm. Versus the MP275 kit (271 bhp), the m365 is a bigger step up, though earlier tunes felt subtler.

It outpaces many in flexibility, making it more versatile than hardcore alternatives.

Driving Experience on Road and Track

On public roads, it’s composed and fun, with broad torque for effortless progress. Autobahn runs reveal effortless high-speed stability. Track days highlight its limits—but they’re high, with the diff managing power transfer adeptly.

Sound is improved with induction kits, though not drastically louder. The character is engaging: urgent yet refined.

Frequently Asked Questions (FAQs)

Is the Mountune kit warranty-friendly?

No, Ford warranties are voided, but Mountune offers its own support.

Can automatics be tuned?

Yes, recent updates include auto compatibility.

How does fuel economy compare?

Around 30 mpg possible in daily use, similar to stock.

Is it suitable for beginners?

Its power demands experience; best for skilled drivers.

What’s the top speed?

Over 155 mph, electronically limited but tunable higher.

Final Thoughts on Value

The Mountune Focus ST delivers RS-like thrills at a fraction of the cost, blending supercar acceleration with hatchback utility. It’s a smart upgrade for ST owners seeking more without switching cars. Highly recommended for performance fans.