Skip advert
Advertisement

Ford Focus ST-3 Mountune

Tuning tweaks up power, but does blue oval feel special enough?

Ford Focus ST-3 Mountune

They know a thing or two about fast Fords at Mountune. The specialist firm gave the Fiesta ST a final shot in the arm earlier this year, and now it has come up with a performance package for the hot Focus. It boosts power from 222bhp to a sizzling 256bhp, which is enough to make the ST-3 the most potent car in our line-up. But is the extra punch enough to see off its competitors?

Advertisement - Article continues below

As the improvements take the form of an engine upgrade, you’ll be hard-pressed to identify the Mountune car from the outside. While its Honda, VW and Renault competitors stand out thanks to their fresh paintwork, alloy wheels
and carbon panels respectively, there’s nothing to set the tuned Focus apart.

In order to spot the differences you need to lift the bonnet. Here you will find a larger intercooler, as well as an uprated air filter and a revised engine management system. The package is priced at £1,120, although that doesn’t include fitting, so you need to budget for one-and-a-half hours’ labour at local rates for installation.

From the driver’s seat we felt a little disappointed because, aside from a garish badge stuck on the centre console, the cabin appears untouched. You do get plenty of equipment as standard, including comfortably padded Recaro racing seats, xenon headlamps and a heated windscreen. However, some unique touches would add to the sense of occasion.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

Corsa

2017 Vauxhall

Corsa

117,016 milesManualPetrol1.4L

Cash £3,490
View Corsa
ix20

2017 Hyundai

ix20

106,372 milesManualDiesel1.6L

Cash £4,250
View ix20
F-Pace

2023 Jaguar

F-Pace

42,714 milesAutomaticPetrol2.0L

Cash £26,800
View F-Pace
208

2023 Peugeot

208

38,637 milesManualPetrol1.2L

Cash £11,997
View 208

This car is all about performance, though, and the distinctive burble of the five-cylinder engine raises expectations before you even turn a wheel. The extra power certainly makes for relaxed cruising, and performance is nothing short of startling. At the test track the Mountune ST blasted from 0-60mph in a mere 6.6 seconds in streaming rain.

Advertisement - Article continues below

The tweaked Focus is at its best when its power is used sparingly, though, because the turbocharged engine delivers a rush of acceleration, accompanied by plenty of wheelspin. Without a clever differential to help traction the ST is a bit of a hooligan on the track, feeling unwieldy where the Renault and Honda seem finely honed.

In damp conditions under full throttle, the steering wheel writhes in your hands as the tyres scrabble for grip.

While the Ford is undeniably fast, it lacks the finesse of its competitors.

Hit the circuit and the key to a good lap in the other cars on test is to carry speed through the corners. In the Focus, you simply have to concentrate on slowing down enough to get around bends, before using the blistering straight-line performance to post a fast time.

This machine is much more at home on the road, where its suspension absorbs bumps more effectively than in either the Honda or Renault. It’s also more refined than its extreme rivals. The only dent in its everyday usability is fuel economy: a 19.8mpg thirst is unacceptable.

Details

Price: £21,965 (+1.5hrs labour)
Model tested: Ford Focus ST-3 Mountune
Chart position: 3
WHY: Produced with tuning firm Mountune, will fastest Focus yet feel overcooked in this company?

Economy

Only the circuit-tuned Renault displayed a greater appetite for unleaded than the fast Ford, which returned a mere 19.8mpg. Residuals are hard to gauge, while CO2 emissions of 224g/km make it the most polluting model here. Road tax costs £210, just like the rest of the cars in our group, but company drivers face a bigger tax bill despite its competitive list price. The ST-3 comes with xenon headlamps, leather Recaro seats and climate control all as standard.

Skip advert
Advertisement

New & used car deals

Vauxhall Corsa

Vauxhall Corsa

RRP £19,870Avg. savings £4,683 off RRP*Used from £9,222
Toyota Yaris Cross
MG MG4

MG MG4

RRP £27,005Avg. savings £6,250 off RRP*Used from £8,555
Kia Sportage

Kia Sportage

RRP £28,085Avg. savings £3,144 off RRP*Used from £14,200
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Jaguar Land Rover recalls 170,000 SUVs with UK cars experiencing similar problems
Land Rover Defender 110 Trophy Edition - front action

Jaguar Land Rover recalls 170,000 SUVs with UK cars experiencing similar problems

JLR has recalled models from across the Jaguar, Land Rover and Range Rover ranges over a faulty DC-DC converter module
News
30 Apr 2026
Car Deal of the Day: Omoda 7 offers space and super-low running costs for just £229 a month
Omoda 7 - front tracking

Car Deal of the Day: Omoda 7 offers space and super-low running costs for just £229 a month

The Omoda 7 is the latest Chinese SUV to arrive in Britain. It’s our Deal of the Day for 30 April.
News
30 Apr 2026
New Peugeot 208: electric supermini to channel iconic 205
New Peugeot 208 exclusive image - front

New Peugeot 208: electric supermini to channel iconic 205

The new Peugeot 208 will be previewed at the 2026 Paris Motor Show, but our exclusive images show how it could look
News
1 May 2026