Dacia has a problem on its hands. While its models are hugely successful (170,000 have been sold in the seven years the Renault-owned firm has been in the UK), its low prices don’t bode well with the rise of electrification.

The firm has been slow to commit to hybrids and EVs, though the latter is set to be available in 2021, so how do you offer a simple low-cost solution to lowering CO2 emissions and, more importantly, save money for buyers?

Well, Dacia’s got a rather simple solution – LPG gas. Costing half the price of petrol, it’s an appealing fuel that, surprisingly given its cost-saving benefits and cheap implementation, is not one favoured by manufacturers any more.

Dacia becomes the only firm in the UK to offer LPG and it calls its system ‘Bi-Fuel’, as you can choose to run it on either petrol or LPG gas, and it’s available across all Dacias equipped with the 1.0-litre TCe petrol engine. Here, we’re trying the system on the Duster crossover, though you can have it on the Sandero supermini and Logan MCV estate, too.

In terms of running costs, fuel economy dips quite significantly when running on LPG (dropping from 44.1mpg to 35.3mpg), but CO2 emissions are lower on gas – going from 145g/km to 129g/km.