As its name suggests, the BMW X1 is the smallest model in the firm's broad SUV line-up. The first one arrived in 2009 and was a car that never quite hit the spot. The SUV stance wasn't assertive enough, the interior was cheap and, while fun, basing it on a rear-wheel drive platform seriously impacted practicality. The second-generation car we're looking at here was a huge improvement. Introduced in 2015, it was now derived from a much more modern and space-efficient platform, shared with models such as the BMW 1 Series and MINI Countryman. Most versions were front-wheel drive, while pricier ones offered four-wheel drive. Crucially, the BMW X1 now looked the part. It was far more SUV-like, with a confident stance and rich detailing that masterfully aped the much larger and pricier BMW X5. The interior was a world apart too, with a welcoming feel and a big lift in quality. Tantalisingly, thanks to depreciation, you can now get into a used example from £10, 000. Here's what to look out for.If you're buying an SUV, you probably want some practicality. If we're talking space for people, the GLC 63 isn't bad at all, with plenty of head and legroom front and rear. Four tall adults will be comfortable, although the middle passenger in the rear does have a large hump in the floor to deal with. Despite having a much smaller battery than the GLC 300e and 300de plug-in hybrids, the GLC 63 has the same 470-litre boot. It's down on the 550-litres of the BMW X3 M, while the Jaguar F-Pace SVR has a whopping 650-litres. At first look and touch things feel premium enough, but there are a few cheap-feeling plastics lower down and flimsy interior door pulls. There aren't many physical controls with most functions accessed through the 11.9-inch portrait-oriented touchscreen infotainment system.It's responsive, with sharp graphics and heating controls permanently at the bottom of the screen. Even so, a few more buttons and dials for key features would be welcome. Voice control is standard and activated by saying 'hey Mercedes'. It works well, but any mention of Mercedes is frequently enough to trigger it. To add to the tech fest, you get augmented reality sat nav. This projects arrows on to a camera feed from the front of the car to guide you to your exit. It's a good idea in theory, but you end up having to keep an eye on the central touchscreen as you're negotiating an unfamiliar road. Furthermore, it completely removes the map so you can't see the last command, either. It'd be much handier to stick this display in the 12.3-inch driver's display. The screen's resolution and crispness of the graphics match the touchscreen, and it's able to show a wide variety of information clearly. You can pick from a number of themes, although adjusting anything is done by a fiddly touchpad on the left-hand steering wheel spoke. The rest of the wheel's controls are also touch-sensitive, so you can occasionally trigger functions accidentally.