The Infiniti QX50 Concept SUV was unveiled at the Detroit Motor Show, prior to a production version going on sale soon. It's biggest draw apart from the styling is an advanced new "variable compression" petrol engine. Inspired by design sketches released in 2016, the QX50 Concept is very distinctive – though many of its more outlandish features were left on the drawing board Side on the QX50 Concept is a far more dynamic looking car than its predecessor – with a lower roofline, slimmer windows and a more heavily sculpted body Distinctive styling lines run much of the QX50 Concept's length – adding drama when the sides of the car catch the light. The distinctive Infiniti grille is becoming more familiar on Britain's roads – though the Japanese luxury brand has yet to become a household name here Cars like the QX50 Concept are bound to raise Infiniti's profile – and turn Infiniti into a real threat to premium European brands like Mercedes, BMW and Audi Details like the Infiniti branding applied to the headlights add a real premium feel, and there are impressive details like this throughout the inside of the car as well as outside. The 3D effect of the rear lamps shows imagination in design, too, and Infiniti's latest models show further evidence that the Japanese company takes design seriously Inside, the QX50 Concept is fairly conventional, but has no shortage of technology – while the materials used are of the very highest quality The QX50 corresponds with the Mercedes GLC and Audi A5 in terms of size - with accomodation for five and a good-sized boot It's not yet confirmed whether all the interior finishes of the QX50 Concept will make it to production, although the show car is said to be very close to how the production car will look.