Skip advert
Advertisement

Saab 9-5

Bioenthanol boosts power and cuts emissions, but few outlets sell the alternative fuel

Overall Auto Express rating

2.0

How we review cars
Find your Saab 9-5
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

Bioethanol boosts power and cuts emissions, but few outlets sell the alternative fuel. While the 9-5 can happily run on unleaded, its £600 price premium and dated dynamics make the BioPower Saab a clever but unappealing prospect – unless you live next door to a garage that stocks the green stuff.

Advertisement - Article continues below

Alternative fuels and green technology are big news these days – barely a week passes without the introduction of yet another new eco-friendly solution that’s promising to save the world.

But until a single system or idea steals a clear lead on the rest, deciding which to put your money on is a lottery. Choose the wrong one, and you could end up losing out in a big way.

Bioethanol is one of the latest options, and along with the Ford Focus Flexi-Fuel, Saab’s 9-5 is among the first cars to use it. Reassuringly, the clever BioPower range allows the model’s 2.0-litre engine to also run on unleaded, which means if you can’t find a garage selling the alternative fuel, you can simply brim it with petrol and continue your journey. The nifty engine management will sort out the rest, optimising performance from the resulting mixture.

Sounds good so far, but there is a major problem. Only a handful of outlets currently sell bioethanol in the UK – and the few that do are confined to predominantly rural areas.

That’s a shame, because if you run the 9-5 on unleaded you’ll get only 150bhp instead of the 180bhp available from the eco-friendly stuff, and the 0-60mph time increases by 1.3 seconds.

On the plus side, bioethanol is slightly cheaper than petrol and Saab says it reduces CO2 emissions by 50-70 per cent compared to conventional unleaded. Still, because the car’s official CO2 output of 204g/km is measured using petrol, there’s little benefit for com-pany car drivers – especially as it costs £600 more than the standard model.

The good news is that when cruising, you won’t notice which fuel is being supped, despite the difference in power. Elsewhere, it proves similar to the standard machine, with too much body roll and a soggy ride.

A dated cabin design also makes it hard to recommend – and BioPower does little to boost the car’s appeal. Only the shortage of rivals makes the Saab worth considering if you must have an executive car that drinks bioethanol.

Skip advert
Advertisement

New & used car deals

Omoda 5

Omoda 5

RRP £23,990Avg. savings £2,161 off RRP*
Kia Sportage

Kia Sportage

RRP £28,065Avg. savings £3,053 off RRP*Used from £14,700
Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £3,297 off RRP*
Volkswagen Polo

Volkswagen Polo

RRP £14,575Avg. savings £2,614 off RRP*Used from £7,850
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Stop settling for boring SUVs and get a used executive express for less
Used executive cars - opinion

Stop settling for boring SUVs and get a used executive express for less

Content editor George Armitage thinks buying a used executive car is better value than buying a brand-new SUV for family car duties
Opinion
25 Aug 2025
At last! Ford Puma Gen-E is first electric car to get full EV Grant discount
Ford Puma Gen-E - front

At last! Ford Puma Gen-E is first electric car to get full EV Grant discount

The electric Ford Puma probably gets the higher-level grant because it is partly made in the UK
News
27 Aug 2025
DVLA classic car rules are outdated, a recipe for disaster, and I think I've broken them
Classic car Opinion header

DVLA classic car rules are outdated, a recipe for disaster, and I think I've broken them

Our man reckons he may have unwittingly flouted DVLA regulations when doing up his beloved BMW…
Opinion
26 Aug 2025