Lexus looks set to take on the high-end van offerings from Mercedes-Benz with a fresh take on the Toyota Alphard, set to launch in Shanghai.

Lexus looks set to go head-to-head with Mercedes-Benz in the luxury van space, teasing the LM – its "fifth flagship product" – ahead of its debut in Shanghai next week.

Based on its silhouette, the LM appears to be based on the Toyota Alphard minivan offered overseas. Lexus says it's a "new style of MPV that is connected to the minds of drivers and passengers".

"With exquisite craftsman, comfortable rides, and a cockpit atmosphere at home, you will find a place to relax, indulge in meditation and inspire your inspiration," a translated press release says.

Offered Japan, Brunei, Indonesia, Thailand, Malaysia, Singapore, the Philippines and Hong Kong, the recently-reworked Alphard is offered with a 3.5-litre V6 petrol engine making 220kW and 361Nm. It's hooked up to an eight-speed automatic transmission in the Toyota.

This powertrain could make the leap to Lexus, although a hybrid also could be on the cards.

The car will be revealed at the Shanghai motor show, which kicks off next week.