Whereas Ford and Vauxhall make a song and dance about eco-technology with special ECOnetic and ECOflex derivatives, Hyundai just gets on and includes what they call 'Blue Drive' in its most affordable i40 derivatives. Essentially, that means you get a Stop/Start system to cut the engine when you don't need it in traffic queues or at the lights, low rolling resistance tyres, an automatically actuated radiator blank that makes for faster engine warm-up and an Eco indicator to let you know how you're performing. It's all enough to keep both on the 1.7-litre CRDi diesel derivatives under the 120g/km of CO2 barrier, enough to earn a lowly 13% company car tax rating. The 115PS version records a particularly creditable 113g/km of CO2 with 65.7mpg on the combined cycle, figures a little supermini would have struggled to match until a few years ago. The 136PS variant isn't far behind with 119g/km and 62.8mpg. Bear in mind though, that the plushest models rather curiously lose the Blue Drive tweaks and as a consequence, jump about 35g/km of CO2. As a result, from a tax point of view, even if you can afford a really swish version, it might be better to buy a lower-level i40 and spec it up.
Those customers opting for a 1.6-litre GDi petrol i40 also get Blue Drive, this a derivative which betters its 2.0-litre petrol stablemate on CO2 by nearly 30g/km, recording a 140g/km showing with 47.1mpg on the combined cycle. That's not a bad showing for a petrol model, but given that the 1.7-litre CRDi i40 is only £1,000 more, you'd recoup the premium between the two cars at the pumps within 23,000 miles, notwithstanding any taxation and residual value benefits the diesel model chalks up. As with all Hyundai models, peace of mind comes as part of the deal thanks to arguably the best customer assurance plan in the industry. The Five Year Triple Care plan includes five years of mechanical warranty, annual vehicle health checks and roadside assistance. Insurance groupings range between 12 to 18 on the 1-50 groupings scale.