September 26, 2022

Affectionately generally known as McDonald’s-on-wheels, Seb Thornton’s modified Ford Fiesta ST Mk7 has quickly gone massive.

Characteristic from Quick Ford journal. Phrases Ben Birch. Images Jason Dodd.

All of us modify our automobiles to face out from the group, whether or not by way of appears to be like, efficiency or each.

Seb Thornton isn’t any completely different, and what began with a easy induction equipment developed right into a two-year mod-fest with the intention of making some of the distinctive, attention-grabbing Fiesta STs within the land.

Seb purchased the automobile fully commonplace after making an attempt out a Mk3 Focus ST at a neighborhood dealership. He explains, “The Focus felt huge and heavy, and I used to be fully underwhelmed. The gross sales man then threw me the keys to a Fiesta ST and it was such an gratifying take a look at drive that I put an order in the identical day.”

It was love at first drive; the Fiesta ST Mk7 felt gentle, agile and, in Seb’s phrases: “Like a go kart, a correct scorching hatch expertise.”

He’d initially needed a white Fiesta, however the dealership discovered a very good used purple instance in its community on the proper worth, and the remainder is historical past.

Seb says, “I used to be completely satisfied sufficient with the usual automobile, however I did fancy an induction equipment for a bit extra noise.”

Ah, the previous ‘simply this’ chestnut, which quickly turns into ‘simply that’ and ‘simply these’, and earlier than you recognize it, you’ve obtained a direct line to the financial institution supervisor and also you’re residing in tuners’ workshops and making the workers cups of tea whereas they spanner in your automobile.

Front wheel of modified Ford Fiesta ST Mk7

Seb’s urge to maintain modifying primarily stemmed from becoming a member of just a few ST teams on Fb. In addition to being bombarded with photos and movies of shiny new merchandise, he made associates with the group and began to attend automobile meets the place he obtained to see, hear and expertise higher-spec STs.

He says, “After the induction equipment got here a Stage 1 tune, however then I went in a pal’s Stage 2 automobile so ended up going for a similar. However regardless of telling myself after every mod that was sufficient, it by no means was.”

See also  BMW E30 With S54 Engine | Cabby Fever

Seb’s dependancy peaked when Covid lockdowns have been applied. Abruptly he had disposable earnings however nowhere to go and spend it. So as a substitute of spending money on Nando’s and travelling to automobile meets, his solely outlet grew to become the modified Ford Fiesta ST Mk7.

Interior of modified ford fiesta st mk7

“I made a decision to go wild with the automobile,” he says. “The intention was to make it actually stand out among the many different Fiesta STs, not solely by way of efficiency but additionally in appears to be like.”

In fast succession, a Pumaspeed Stage 3 tune discovered its manner below the bonnet, together with supporting mods reminiscent of an Airtec full-height intercooler, Turbo Technics hybrid turbo and a de-cat downpipe joined to a Mongoose non-resonated exhaust system. The modified Ford Fiesta ST Mk7 now makes a strong 334bhp with comparable torque, and Seb reckons going from Stage 2 to this spec has given him the most important bounce in efficiency in comparison with another of the levels.

Seb says, “Not solely is it way more highly effective but it surely’s extra responsive, and I nonetheless get 27mpg on common, which isn’t unhealthy.”

Sparco bucket seats

Certainly, with petrol costs as they’re, it’s going to be an rising think about choosing the proper automobile, particularly in the event you day by day drive the automobile like Seb.

“I didn’t purchase it to drive economically, although,” he provides with a smile.

As for different mechanical mods, the already glorious Mk7 Fiesta ST chassis has been handled to a set of decreasing springs, which Seb says has improved the dealing with somewhat however surprisingly made it much more snug to drive. There are additional plans for the suspension, and in addition for the brakes. Presently they’re factory-spec aside from a set of Mintex M1144 pads, which made an enchancment however have been discovered somewhat missing when Seb took the automobile on its – and certainly his – very first observe session.

He says, “I went to Ford Truthful final 12 months and my pal took me out as a passenger in his observe ST with slightly below 400bhp and it was nice enjoyable. Afterwards, I reasoned that I had my automobile and my crash helmet, so why not have a go too.”


1.6-litre, four-cylinder turbocharged engine

Truthful play for being so spontaneous, and sincere… “Beneath the bravado I used to be crapping myself. However I got here away impressed with my Fiesta, aside from barely gentle dealing with and barely fading brakes.”

Regardless of these slight shortcomings, the seed has been nicely and really sown, and observe days are about to change into a extra common event. Seb is presently saving for an enormous brake equipment and coilovers to attain the ST’s full potential.

He says, “I’ve began to poly bush the chassis, and I’ve purchased a set of Staff Dynamics Professional Race alloys with NS2R observe tyres prepared to change over for observe use.”

Clubsport rollcage in interior of modified ford fiesta st mk7

The inside already boasts a set of bucket seats and a Clubsport roll cage, which additionally ties the cockpit into the general yellow-and-red color theme that spawned the nickname of McDonald’s-on-wheels. Seb embraces this affectionate banter in good religion, and even has an acceptable sticker within the engine bay. As he says, “Nicely, I’m lovin’ it. So why not be proud about it. I do know some folks don’t just like the appears to be like, but it surely’s distinctive and I adore it”.

Creating such a head-turner takes an intensive quantity of bolt-on exterior goodies with splitters, canards, diffusers and skirts all beefing up and decreasing the profile of the arguably-too-subtle commonplace Fiesta’s styling.

Many of those aftermarket elements have been additional accentuated with some slightly trick yellow pin-striping, and together with an enormous rear wing we are able to all agree that Seb has 100 per cent achieved his purpose of standing out from the group.

Seb’s favorite modification, although, is to the headlights. Many individuals would possibly miss them at first look, however not solely have they got honeycomb-etched glass and {custom} inside paint, additionally they boast quad xenons, quad halos and a great deal of different distinctive touches that might hold a show-goer’s consideration for ages. This can be a good factor, as a result of they ran Seb nicely into 4 figures. Actually, they’re the only costliest mod on the modified Ford Fiesta ST Mk7.


What began with Seb wanting to purchase a Mk3 Focus ST has became him constructing a wild modified Ford Fiesta ST Mk7.

All that’s lacking is for him to lap the haters at Ford Truthful 2022, whereas wearing a {custom} Ronald McDonald race swimsuit full.

You should definitely try our information on tuning the Mk7 Fiesta ST. 

Tech Spec: Modified Ford Fiesta ST Mk7


1596cc EcoBoost, Turbo Technics S242 turbo, Turbosmart recirc valve, Airtec Stage 3 consumption, Airtec Stage 3 intercooler, Airtec de-cat, Powerflex higher and decrease engine mounts, Mongoose 3in non-resonated cat-back exhaust system, Paintmodz engine cowl, battery cowl and fuse field cowl, Airtec header tank


334bhp and 340lb.ft


Fiesta ST six-speed IB6 gearbox, Powerflex transmission mount


Eibach decreasing springs (-35mm entrance, -45mm rear), Powerflex rear beam bushes, Summit entrance strut brace


Entrance: unique Fiesta ST callipers and discs, Mintex M1144 pads, Hel Efficiency braided brake traces; rear: unique Fiesta ST discs and callipers, Hel Efficiency braided brake traces

Wheels & Tyres:

7.5x17in Sico Developments DNT alloys, ET40, 4×108 PCD, with 205/40×17 Uniroyal Rainsport 5 tyres


Mk7 Fiesta ST in Race Pink, TRC styling upgrades (together with V3 entrance splitter, Aero rear diffuser, facet skirts, eyebrows, and chin lip), Maxton Design styling upgrades (bumper canards and bonnet vents), Zunsport higher and decrease entrance grilles, Rally Flapz mud flaps, MGC tailgate-mounted huge wing, OSRAM rear tail lights, wind deflectors, black door mirror caps, yellow pin-striping, gloss black fog gentle surrounds, {custom} shortened aerial, blacked-out sequential door mirror indicators, {custom} LK2 Lights headlights (with quad xenon projectors, X-halos, demon eyes, etched honeycomb lenses and blacked-out internals with purple and yellow paint splatter)


Sparco Dash bucket seats, Sparco harnesses, Mountune gearknob, Airtec Clubsport roll cage, Turbosmart increase gauge, Lufi X1 revolution OBD gauge, Mountune ground mats, custom-made false rear ground