Generally, running costs will be very similar in the Nissan Juke and the Renault Captur. However, the Renault gives you more choice when it comes to engines and power, so you may be able to find an option that better suits your needs.
The Juke is available with a petrol engine or as a full hybrid. The petrol will give you up to 48.7mpg (or around 2mpg less with an automatic gearbox), while the automatic-only hybrid promises up to 56.5mpg, according to official figures.
By contrast, the Captur lets you choose between petrol, diesel, full hybrid and plug-in hybrid power. If you do a lot of longer journeys, the diesel could be the best bet, with official fuel economy of up to 58mpg. The hybrid promises similar mpg, but emits slightly less carbon dioxide (CO2). Petrol models promise up to 48mpg, while the plug-in hybrid tops has an official figure of 217mpg.
As with all plug-in hybrids, real-world fuel economy will depend on how you use it. Keep the battery charged and do mostly short journeys and a tank of petrol will last a very long time – the Captur, for example, can give you up to 30 miles of pure electric power. However, drive longer distances with an empty battery and your mpg is likely to be worse than with a petrol-powered car.