We live in an ecologically conscious age. We’re installing solar panels, switching off lights, and looking for fuel economic vehicles. All the better to protect our planet. We only get one, right? Failure to take notice could spell catastrophe. And, of course, there’s also the bonus of saving ourselves a significant amount of money!Let’s face it; car owners have to cope with extortionate costs in many different areas. There’s the vehicle itself, insurance, and tax. Do you want to add a hefty fuel bill into the mix? If you opt for a car which needs filling often, you can be sure that amount will soon add up. The good news is, those economic cars are also much more affordable. Why? Because they get the most out of every gallon. Your fuel will last you longer than you could ever imagine. And, that’s got to be good news. In truth, the majority of manufacturers aim for this goal. But, some models are still front of the queue, and we’re going to look at a few of them here. Peugeot 208Coming in at a purchase price of £13,774 we have the Peugeot 208. The most expensive option on this list, this supermini has been making waves since its unveiling in 2012. And, it’s one to pay attention to if fuel efficiency is your priority. Of course, the value you get depends on your engine choice. The best options here would be the 1.6 Blue HDi or the PureTech 1.2 petrol. Either way, you’re facing 94-68 mpg, neither of which are bad going. What’s more, Peugeot has announced plans to release an electric option later next year. It doesn’t get better when it comes to saving on fuel.Citroen c3Coming in next we have the cheapest option on this list. At £10,685, the Citroen c3 is also worth attention. What’s more, you can save further by opting for a used Citroen c3. Either way, this one is sure to keep your fuel costs down. Again, you have a choice of engines here, which are identical to those in the Peugeot. Either 1.6 Blue HDi, or 1.2 PureTech. That said, they don’t quite offer the mpg power, coming in at 78.5-80.7. Even so, that’s not bad pickings. What’s more, Citroen is renowned for their fuel efficiency, so you’re sure to be in good hands here.Ford FiestaFord also deserve a place on this list with their Fiesta. It comes second to Peugeot, with a release price of £12,945. This neat little car is ideal for families and can save on fuel in the process. To prove the point, the engines on offer are a range of 1.3 litre EcoBoost options, of which the 123bhp version is your best bet. There are also low-emitting diesel models on offer, including an 84bhp 1.5-litre TDCi which comes in at 88.3 mpg. Overall, though, the Fiesta comes in at 54-88 mpg. Can’t say fairer than that.