Emissions are the talk of the town when it comes to cars. All manufacturers are under strict pressure to drive down the emissions of their vehicles, which in turn means that cars are becoming cleaner and greener than ever before – even those which don’t feature any electric powertrain.

We’re judging them based on the amount of CO2 they emit. Carbon dioxide is emitted by petrol and diesel vehicles – and hybrids too – and is measured by weight in relation to distance travelled. Always calculated in km, the lower the number, the fewer emissions are produced. Cars producing under 100g/km are some of the cleanest available today.

It means that those buying a new car now could be driving around in some of the lowest-emitting vehicles around. Let’s take a look at them.

Citroen C1 – 108g/km

Given its dinky proportions and compact engine, it’s little wonder why Citroen’s C1 is so accomplished when it comes to bringing low emissions. In fact, with CO2 emissions of 108g/km, the C1 is almost remarkably clean.

It’s also stylish and packs a lot of standard equipment. Plus, a short wheelbase means that it’s easy to park in the tightest of spaces.

Take a look at Citroen C1 models here.

Vauxhall Corsa – 109g/km

Though it’s easy to think of all diesels as heavy polluters, more recently that’s less the case. In fact, Vauxhall’s latest Corsa – equipped with an efficient diesel engine – emits just under 110g/km CO2, which is exceptionally low.

The latest Corsa is also excellent to drive and good to look at too. Vauxhall has included plenty of standard equipment as well, ensuring that the Corsa remains good value for money.

Take a look at Vauxhall Corsa models here.

Audi Q5 TFSIe – 49g/km

The Q5 is a car which has been a bit of a hit with Audi. Placed right in the middle of the range, it’s often just the right size for families who want more room but don’t want to deal with an uber-large SUV.

A new TFSIe plug-in hybrid model means it’s even more efficient than ever, too, with emissions of just 49g/km. It retains the regular Q5’s smart exterior looks and well-finished interior too.

Check out other Audi Q5 models here.

Land Rover Evoque P400e – 38g/km

Land Rover’s Evoque has been a hit with buyers for many years, offering an easier and more affordable entry point into the brand without forsaking quality. Now, the Evoque brings efficiency to the table with the new P400e plug-in hybrid.

Emissions of just 38g/km mean it’s exceptionally clean to drive, yet with premium looks and an equally premium interior, the Evoque remains just as desirable as ever.

Check out Land Rover Evoque models here.

BMW X5 xDrive45e – 69g/km

It’s often big, heavy SUVs which are seen as the most heavily polluting cars on the road. For the most part that rings true, but it’s not the case with BMW’s latest X5 hybrid. Thanks to an excellent electric range and one of the largest batteries of any plug-in hybrid on sale today it can deliver CO2 emissions which put many far smaller cars to shame.

It’s also packed with features and incorporates a high-quality interior, too.

Take a look at BMW X5 models here.

Fiat 500 1.0 Mild Hybrid – 88g/km

Fiat’s funky 500 has been a consistent hit over the years, bringing the retro looks people love alongside clever packaging and a relaxing drive. It’s also been quite efficient too, but Fiat has seen to improve that aspect even further with the introduction of a mild hybrid version.

It emits a scarcely believable 88g/km which helps it to be one of the cleanest cars available with an engine today.

Check out Fiat 500 models here.

Honda Jazz – 110g/km

The Honda Jazz is a car which despite not being graced with the most exciting of reputations is a reliable and practical hatchback option. The new version is no different either, though brings some quirky new looks which do help it to stand out from the crowd.

It’s also exceptionally efficient, with a hybrid powertrain helping towards low CO2 emissions of just 110g/km.

Take a look at Honda Jazz models here.