Skip advert
Advertisement

Vauxhall Insignia ecoFLEX

Family Vauxhall goes green with eco-friendly upgrades

Find your Vauxhall Insignia
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

Vauxhall has done a fantastic job of upping the Insignia’s efficiency. Not only are the fuel economy and CO2 emissions better than those of its arch-rival, the Mondeo ECOnetic, but it trumps the Ford in terms of straight-line performance, too. As always with eco sub-brands, though, it begs the question: why hasn’t Vauxhall applied these changes as standard across the entire range?

Advertisement - Article continues below

Vauxhall is cleaning up its act – with an even greener version of the award-winning Insignia. The ecoFLEX variant is designed to offer all the refinement and quality of the standard car, but with reduced running costs and less of an environmental impact.

The ecoFLEX is available with only one engine, but the 158bhp 2.0 CDTI turbodiesel is the pick of the range. It rides 10mm lower than the standard model, while flat panelling on the underbody helps to reduce aerodynamic drag. Longer gear ratios and low-rolling-resistance Michelin tyres are also fitted – and the result is that economy and emissions are much better.

Video: watch CarBuyer's video review of the Vauxhall Insignia

[[{"type":"media","view_mode":"content_narrow","fid":"68338","attributes":{"alt":"","class":"media-image"}}]]

Combined returns of 54.7mpg represent a 10 per cent improvement over the regular car’s. Meanwhile, a CO2 output of 136g/km not only puts the ecoFLEX in the second lowest benefit-in-kind car tax band for any diesel, but also saves private owners £25 a year in road tax over the 2.0 CDTI.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

MG4 EV

2024 MG

MG4 EV

27,303 milesAutomaticElectric

Cash £13,900
View MG4 EV
Fiesta

2023 Ford

Fiesta

17,061 milesManualPetrol1.0L

Cash £13,600
View Fiesta
HS

2022 MG

HS

51,983 milesManualPetrol1.5L

Cash £12,500
View HS
Qashqai

2020 Nissan

Qashqai

13,572 milesAutomaticPetrol1.3L

Cash £16,700
View Qashqai

Amazingly, though, Vauxhall’s quoted performance figures are no different to the regular model’s. That means 0-60mph in 8.9 seconds and a 135mph top speed – not bad given the car’s eco credentials.

As you would expect, the changes have been blended seamlessly into the Insignia package – the differences are barely noticeable. Grip in tight corners is strong, despite the slightly harder-compound rubber, and while the steering doesn’t offer the feedback of a Ford Mondeo it is direct and the model still handles well.

What’s more, the lower ride height has little effect on the Insignia’s supple suspension. The only detectable change is a slight increase in road noise – although the car is so well insulated to begin with that this is still far from intrusive.

The ecoFLEX upgrades carry a £470 premium over every trim level, but they’re not available on the SRi. This means prices range from £19,600 – nearly £2,000 more expensive than the cheapest VW Passat Bluemotion – all the way up to £24,950 for our flagship Elite. The latter has sat-nav, leather upholstery and electric seats. However, the extra outlay should soon be recouped, especially if you drive a company car.

Rival: Mondeo ECOnetic
High gearing can make the Ford feel sluggish, and it’s costly compared to rivals. But factor in the superb build, space and handling, and it comes highly recommended.

Skip advert
Advertisement

New & used car deals

Hyundai Tucson

Hyundai Tucson

RRP £29,820Avg. savings £6,182 off RRP*Used from £12,295
Nissan Juke

Nissan Juke

RRP £19,785Avg. savings £4,644 off RRP*Used from £9,295
Kia Sportage

Kia Sportage

RRP £28,065Avg. savings £3,266 off RRP*Used from £14,300
Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £4,588 off RRP*
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

It’s time to be clear and honest about battery health on used electric cars
Opinion - used EV battery health

It’s time to be clear and honest about battery health on used electric cars

Paul Barker explains why sellers need to be clearer about battery degradation in order to give used EV buyers a confidence boost
Opinion
15 Feb 2026
Electric cars are more expensive to buy and insure, and will depreciate faster
Opinion - EVs

Electric cars are more expensive to buy and insure, and will depreciate faster

Mike Rutherford is not surprised to see the electric car market slowing down in the UK
Opinion
15 Feb 2026
New Toyota Yaris in-line for major rethink to try and please hybrid and EV buyers
Toyota Yaris - front (watermarked)

New Toyota Yaris in-line for major rethink to try and please hybrid and EV buyers

The Mk5 Toyota Yaris will be offered with internal-combustion, hybrid and electric powertrains to suit buyers’ needs, and our exclusive images preview…
News
16 Feb 2026