Sketches of the second-generation Volkswagen Tiguan have been published online ahead of an anticipated debut at the 2015 Frankfurt motor show.

These artist renderings of Volkswagen's second-gen crossover were published overnight by Auto Motor und Sport, which claims that they are the first official images from Volkswagen of the new Tiguan.

According to the German publication, the new Tiguan will measure around 4.5 metres in length and will feature at least 500 litres worth of boot space. Other reports have suggested that the new car could be up to 4.7 metres from nose to tail.

The new Tiguan is based on the MQB component matrix for transverse-engined vehicles, and will be available with front- and all-wheel drive.

volkswagen-tiguan-sketch-rear

A selection of turbocharged petrol and diesel engines will reside under the bonnet. The base petrol engine, it's said, will be a 1.4-litre TSI unit with around 92kW of power, while the top-spec diesel engine is a 177kW 2.0-litre motor.

A seven-seat, long-wheelbase Tiguan has already been confirmed by Volkswagen and will be built at the company's facilities in Mexico. Expected to join the range in either late 2016 or early 2017, the LWB Tiguan will be aimed at the North American market, but right-hand drive production has yet to be confirmed.

A report last month claimed that Volkswagen will also add a five-door "coupe" model to the Tiguan lineup, possibly as early as 2017.