Skip advert
Advertisement

Ford Flex EcoBoost

We sample Ford’s new engine technology that’s coming to UK

Find your next car here
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

The Flex is a plausible, different and relatively economical large family car that we would pick over a brash SUV if we lived in the US. More importantly, it shows Ford of America’s commitment to build more economical vehicles. But the key is its EcoBoost technology. Our time behind the wheel proves this has the potential to dramatically improve the fuel returns of the Galaxy and S-MAX MPVs, without affecting how they drive.

Advertisement - Article continues below

No, it’s not a giant MINI! This is the new Flex – an America-only seven-seater that’s one of the first Fords to get the latest EcoBoost engine technology.

Over the coming months, EcoBoost will become a big deal for buyers looking to save money and reduce emissions. It uses turbocharging and high-pressure direct injection to improve fuel economy by as much as 20 per cent.

And it will make its UK debut in the S-MAX and Galaxy people carriers in the spring. EcoBoost will also be at the heart of the new Focus range (see Page 12).

Customers in the States get to benefit now, as the engines have slashed running costs for family cars like the Flex. This five metre-long, spacious and comfortable seven-seater has the biggest EcoBoost engine yet – a whopping 3.5-litre petrol V6 delivering 350bhp. Even so, it’s capable of returning 26mpg. That’s not great by European standards, but it represents an improvement of one-fifth for the powerful four-wheel-drive two-tonne bus.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

C5 Aircross

2021 Citroen

C5 Aircross

37,000 milesAutomaticPetrol1.6L

Cash £14,020
View C5 Aircross
C3 Origin

2022 Citroen

C3 Origin

29,755 milesManualPetrol1.2L

Cash £9,499
View C3 Origin
C5 Aircross

2024 Citroen

C5 Aircross

1,995 milesAutomaticDiesel1.5L

Cash £18,999
View C5 Aircross
Grandland X

2021 Vauxhall

Grandland X

49,140 milesManualDiesel1.5L

Cash £10,495
View Grandland X

Mind you, ‘bus’ is a little unfair. It’s a shame Ford has no plans to bring the Flex to this side of the Atlantic, as we really liked it. Not only is the car huge inside, with access to the cabin easy for all the family, it offers punchy performance, too.

Advertisement - Article continues below

EcoBoost technology not only aids efficiency, but also brings useful mid-range thrust and better responses than a naturally aspirated powerplant. And despite the boxy shape, the Flex drives just as well as a conventional SUV, with decent agility on twisty roads.

In our view, it even looks pretty good. And adding to the appeal is the raft of latest Ford technology that’s included as standard – some of which will grace forthcoming models over the coming months. Leading the way is Active Park Assist, which parallel parks the car for you. That’s nothing new in itself – high-end Lexus and Mercedes models have a similar set-up – but Ford’s is the most intuitive we’ve used to date. You simply press a button and drive past a space with your indicator on. The car scans the gap, then reverses in automatically. All you do is operate the throttle and brakes. It really couldn’t be simpler.  

Active Park will appear on the S-MAX and Galaxy ranges within the next six months, alongside the EcoBoost tech.

A 2.0-litre powerplant will be introduced in the seven-seaters in April, and promises to combine 203bhp with “impressive” economy.

Of course, Ford won’t offer the Flex’s 350bhp V6 in its strong-selling people carriers. But the unit shows the incredible potential of EcoBoost – and proves buyers have a lot to look forward to.

Rival: Ford S-MAX
it’s not a direct rival, but an illustration of the differences in approach to seven-seaters between the US and Europe. The S-MAX features ambitious looks and drives well, but isn’t as outrageously designed or engineered as the Flex.

Skip advert
Advertisement

New & used car deals

Toyota Yaris Cross
Renault Clio

Renault Clio

RRP £16,175Avg. savings £4,216 off RRP*Used from £7,000
Hyundai Tucson

Hyundai Tucson

RRP £29,840Avg. savings £4,389 off RRP*Used from £12,215
Nissan Juke

Nissan Juke

RRP £19,805Avg. savings £4,806 off RRP*Used from £6,390
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New Citroen 2CV: the French £13k EV city car is sticking to retro styling
New Citroen 2CV teaser - headlight

New Citroen 2CV: the French £13k EV city car is sticking to retro styling

New budget-focused EV will closely follow the design of the original 2CV
News
5 Oct 2026
It’s hard to see how the Jaguar Type 01 will be a huge success
Rutherford Jaguar Type 01

It’s hard to see how the Jaguar Type 01 will be a huge success

Mike Rutherford warns that the majority of new car buyers do not go for big, expensive saloon cars such as the latest Jag
Opinion
5 Oct 2026
Car Deal of the Day: a Nissan Micra for a micro £183 a month
Nissan Micra - front cornering

Car Deal of the Day: a Nissan Micra for a micro £183 a month

Renault 5’s sister is far more affordable, but is just as fun to drive. It’s our Deal of the Day for 6 October.
News
6 Oct 2026