Diesel released the set photo on his Facebook page on Sunday (September 15).
It features Diesel alongside co-star Paul Walker as the duo look ahead at the "unknown road ahead".
Filming on the James Wan-directed instalment began on Friday (September 13), with Diesel tweeting the news.
"Seven... Has begun," the actor shared, along with a picture of Dominic Toretto's signature cross.
The seventh instalment reunites Diesel, Walker and Dwayne Johnson. Jason Statham, Djimon Hounsou and Tyrese Gibson also star.
Fast & Furious 7 will be released in the US on July 11, 2014 and the UK on July 25, 2014.
Watch Vin Diesel talk to Digital Spy about Fast & Furious 7 below: