TOYOTA has come up with a concept design that turns the GT86 sports car into an estate.

The prototype has been developed by Toyota Australia's design team and has been hand-built in Japan under the direction of Toyota's global sports car division.

The Shooting Brake concept, which adds new hatchback styling to the rear of the GT86, was unveiled in Sydney by GT86 chief engineer Tetsuya Tada.

Its designers say the lines of the prototype are still sporty, but it's more practical as it allows the roof to be used to carry surfboards, bikes or storage pods for a weekend away while the larger opening of the new boot enables much easier loading.

Tetsuya Tada said he was inspired to support the project after being shown a one quarter-scale clay model of the concept during a visit to Australia in 2014.

At the world reveal he said: "It is a fully functioning, driveable vehicle that has been put through its paces on Toyota test tracks. The GT86's nicely weighted and direct steering ensures the car retains the coupe's involving driving experience with a slightly more neutral feel in tight corners."

Brad Cramb, of Toyota Australia, said the concept's shooting brake name reflected how the design gives the GT86 more rear head room and luggage space.

Mr Cramb added: "The Toyota GT86 lends itself perfectly to a concept that expands its appeal with added versatility, while retaining its sleek and sporty coupe styling and sharp, responsive driving character.

Mr Tada said Toyota wanted to gauge reaction to the concept, and although it has been produced as an internal design study, there are no plans for production, but went on to say: "While we never say never, and I would love this concept to become a production reality, it is very much a concept that demonstrates the passion within Toyota for cars that are fun to drive."