Datsun stopped production on the 810 in the 1981 model year.
The 810 was built by Datsun.
The Datsun 810 was produced from 1981 to 1981.
The Impreza WRX STi was built by Subaru.
Subaru stopped production on the Impreza WRX STi in the 2006 model year. Subaru produced the Impreza WRX STi for 2 years.
The Subaru Impreza WRX STi was produced from 2004 to 2006.