The Forza 4 demo due out next month includes a single quick race and Rivals mode implementation, Turn 10 has confirmed to Eurogamer.
The Forza 4 demo will be available to download from Xbox Marketplace from 3rd October.
It is based on the E3 2011 Forza 4 demo, which included a quick race option on the Bernese Alps track with the Kia cee'd, 1970 Mercury Cougar Eliminator, 2011 Subaru WRX STI and 2011 Ferrari 599 GTO.
The Marketplace demo also includes the new Rivals mode, Forza 4's answer to Need for Speed's Autolog.
Forza 4's Rivals mode allows players to go up against their friends, even when they're not online, and race them. You get bounty for winning - the more accomplished your opponent, the more bounty you receive.
"The Rivals mode, we've already found, is hugely addictive," Turn 10 boss Dan Greenawalt told Eurogamer. "Our hope [with the demo] is to give people something they can really dig their teeth into until the game comes out.
"Then of course, it's not like it's hundreds of cars and hundreds of tracks. It's limited content."