In arguably one of the most competitive sectors that has been dominated over the past decade by the likes of the Honda Civic, Volkswagen Golf and of course the Ford Focus, the C4 has two massive things in its favour.It's as comfortable as any vehicle on the market today and, thanks to the launch of a new PureTech engine which has taken four years to develop, it's economical too.Citroen says that more than 250 engineers have been working on this new technology as part of a massive investment that runs into many hundreds of millions of Euros.The efficient 1.0-litre and 1.2-litre petrol engines are three-cylinder naturally aspirated and turbocharged which means the driver gets all the benefits of a 1.6-litre four-cylinder unit.The 1.2-litre engine on the model I drove achieved 65.7mpg fuel economy on the extra urban cycle and CO2 emissions of 110g/km, putting it in the Band B Road Fund Licence of £0 per annum.The C4 is available in three different levels, and you get plenty of equipment as standard. The entry level Touch comes with 16-inch Atlanta wheel covers, air conditioning, cruise control and speed limiter and front electric windows.The mid-range Feel adds 'Wembley" alloy wheels, a DAB radio/ MP3 CD with six speakers, Bluetooth handsfree and USB socket and a customisable colour instrument panel with analogue dial hands.I drove the top-of-the-rage Flair model which came with a whole raft of extras including tinted rear windows, rear parking sensors, a seven-inch touchscreen, DAB digital radio/MP3 CD player, Bluetooth handsfree and media streaming with USB socket, electrically adjustable, heated folding door mirrors with kerb lighting and an Auto Pack. This consisted of automatic lights (with 'Guide me home' headlight function) and windscreen wipers, auto dimming electrochrome rear view mirror and a noise reducing acoustic windscreen.As with most new cars these days there's a long list of optional extras to choose from to ensure you get the car that you truly want. On the car I had these included pearlescent white paint (£730), keyless entry and start (£300) and a panoramic sunroof (£695).After a week of driving the C4 I can honestly say that I was genuinely impressed. While it may not have been as exciting to drive or have attracted as much attention to the Cactus that I drove earlier in the year, the C4 is a good family hatchback in its own right, and I was sad to see it go after a week.I like the look of the C4's exterior, which is fairly understated apart from the dominating front grille with the larger than average Citroen logo at the centre.Little touches gave the Flair model I drove that feeling of quality too to instantly dismiss that historical feeling some people may still have of French cars not being as refined as those from other nations.These included the chrome door mirrors and two-tone door handles.The interior has had a bit of an uplift for 2015, and now features the button-free touchscreen infotainment system that is used in the Peugeot 308.It resembles a tablet and groups together all the vehicles main functions such as entertainment, mobile phone connections, vehicle settings and satellite navigation.The benefit the C4 has over the Cactus, however, is that the air-conditioning controls remain and are not part of the touchscreen.The steering wheel is clutter-free too with just the the bare essentials such as cruise control and stereo volume on it,, and the good-sized digital speedometer is clear to read without having to take your eyes off the road.The boot is a reasonable size for a family hatchback at 408 litres, but this compromises the rear seat space, although there is plenty at the front to make it a comfortable drive.While some of its rivals such as the VW Golf may be more fun to drive, the C4 still handles great and has the required power when it's need on motorways and A-roads. 0-62mph at 10.8 seconds isn't the quickest, but its respectable all the same.The steering is light on country roads, and the noise reducing acoustic windscreen certainly plays its part in making the cabin almost completely free of wind noise.The basic on-the-road price for the Flair model is £18,245. With the optional extras added, this total rose to £20,765.