Jaguar's C-X17 is claimed to be the forerunner of a whole new range of Jaguar automobiles. It's leading the way with a crossover function and variations will be in showrooms by 2015, we're told.FRANKFURT, Germany - Jaguar’s first sports crossover concept vehicle – the C-X17 – is making its debut at the 2013 Frankfurt auto show which opened today (Sept 10) for two days of news media attention.Video: 2014 Jaguar C-X17 crossoverThe C-X17 has been created as a design study to introduce Jaguar’s all-new advanced aluminium monocoque architecture, codenamed iQ[Al], on which a range of future Jaguars will be built. This philosophy, the automaker says, underpins the entire innovative future of the Jaguar brand.'INCREASED PRESENCE'The design is modular and scalable and created and developed for Jaguar to be very strong, light, rigid and with innovative efficiency technologies. It enables flexible high-volume production while allowing creative design freedom and competitive interior packaging, without compromising the unique character, dynamics, performance and luxury for which Jaguar claims to be famous.Jaguar C-X17 image galleryThis, Jaguar says, will enable the company to grow its product portfolio, targeting high-growth areas of the premium market."As a sports crossover," Jaguar says, "the C-X17 stretches the design possibilities of the segment by combining the character and driving experience of a sports car with increased presence, style and flexibility. The concept represents the potential expansion of Jaguar’s portfolio of body styles, with the associated enhancement of the brand’s relevance and appeal to a wider global audience."Adrian Hallmark, Jaguar's global brand director, said: “The C-X17 sports crossover is an exciting new direction for Jaguar. Its purpose is to highlight our all-new aluminium architecture. With this technical foundation, we will dramatically expand Jaguar's product offering, market potential and customer appeal. It will bring technology from our luxury products into an accessible price segment and, when combined with our new ultra-efficient engines, we will set a global standard."Add to these rational values the class-leading dynamics and the beauty and purity of form for which Jaguar is renowned and we have the formula for a monumental leap forward."ENGINES FROM J-TYPEJaguar’s first product from the new iQ[Al] architecture will be a new premium C/D-segment sedan for showrooms in 2015. It will, the company says, be the first aluminium monocoque product in the segments.Power will come from engines with a wide range of capacities and output - among them high-output petrol and diesel engines from Jaguar Land Rover’s new engine plant in the UK, as well as the powerful V6 petrol engine in the F-Type, which will provide best-in-class specific power output. "The planned products will have exhilarating performance, top speed of more than 300km/h and emissions below 100g of CO2/km.So, the C-X17 concept claims to illustrate the diversity of vehicles that could be produced using the architecture. It's a four-seater sports crossover concept built on a mainly aluminium chassis and overseen by Jaguar's design director Ian Callum – "every inch a Jaguar". Callum said: "We designed the C-X17 from a distinct set of principles, a deep sense of what makes a Jaguar: exciting proportions, clean lines, balance of form. Assertive and powerful, yet with a beautiful sensuality about it, the C-X17 is boldly, distinctively Jaguar.”At car is 4718mm long and 1649mm high - the proportions of a crossover, Jaguar says, "yet in its design it shares strong family traits with Jaguar’s current range".The grille, we are told, is an evolution of the distinctive nose of the Jaguar XJ luxury sedan, while the sculptured haunches "hint strongly of the award-winning design of the Jaguar F-Type sports car. The concept's low stance and overall profile ride on 23" alloy rims highlighted by diode headlights, J-shaped running lights and frosted-glass fog lights in the large front intakes.LEATHER, LEATHER, LEATHERThe cabin has not only four individual bucket seats but also two "leisure seats" that swing out for recreational use - a day at the races, perhaps. A torch and a camera live in the boot - why, given a cellphone can do both jobs, is known only to Jaguar.The interior is leather, leather, leather: stitched Connolly skins on the seats, instrument panel, armrests, doors and (heaven forbid!) on the floor and in the boot. Please, Jag, drop that before production starts.Ruthenium, milled aluminium and black brushed anodised metal finishes, Jaguar says, darken the cabin.The central transmission tunnel running the length of the cabin carries an "interactive surface console" - translated: "an interactive multi-passenger infotainment hub with a series of touchscreens under a continuous panel of transparent acrylic glass which, in conjunction with the car's wi-fi, enables passengers to connect and share experiences with each other and the outside world via social media".The C-X17’s premium digital audio system is by British specialist audio firm Meridian and the car’s centre console is configured for a head-up display projector.With its 213mm ground clearance and 4x4 drive the C-X17, Jaguar says, can handle poor roads foul weather, the 4x4 continuously monitoring tyre grip levels and the driver's actions to distribute torque to various wheels.Stay with Wheels24 for the 2013 Frankfurt Motor Show.