What this board compares
Same goal: a free car you can unlock with account level, judged by the printed class, drivetrain, power, and top speed. Raijin G6, Kumo R1, Ocelot R1, and Orkan 9S are omitted because a blank spec is not a low spec.
Rankings
Backseat Rally early-cars rankings from S through D. This is an editorial board from published topics, not a live meta snapshot.

Backseat Rally wiki for Roblox: co-driver calls, Pine Forest and Alpine Pass times, car unlocks, CR, crates, and the RELEASE code.
Same goal: a free car you can unlock with account level, judged by the printed class, drivetrain, power, and top speed. Raijin G6, Kumo R1, Ocelot R1, and Orkan 9S are omitted because a blank spec is not a low spec.
Yes. On the CO-DRIVER step choose AI CO-DRIVER. You still drive. The passenger is labeled RALLY BOT, and a friend's avatar can ride as that AI.
No. Account level unlocks cars. Mastery is tracked on each car and can unlock performance parts. A rewards screen can show both bars at once.
The car has to be stopped inside the start box. STOP IN THE START BOX, BRAKE TO A STOP, and MISSED THE START BOX are different prompts. Press Enter only when the panel says START STAGE, then wait for GO.
The Roblox description says 7 cars and 5 stages. A garage directory names 10 cars, and four stage names are documented: Pine Forest, Alpine Pass, Riverbend Canyon, and Sakura Pass. The fifth stage name was not confirmed.
No. Paint, rims, cosmetic tires, and fresheners are looks. Performance parts and the tire compound are the menu that changes the rating.