FAQ

Yes. Junk Mechanics is a free-to-play Roblox experience. Optional Robux purchases include four gamepasses (Premium Garage 399 R$, Portable Jack 199 R$, VIP 399 R$, Big Inventory 179 R$) and the 39-Robux junkyard reroll.

[TUNING] is the live banner appended to the experience name. It indicates the active in-development build, currently the Aug 5, 2026 update. The previous banner was [SUSPENSION].

No. The four tools are planning models built from community walkthroughs. Always verify exact values in-game before treating them as authoritative.

Yes. Active codes (THIRDCODEOK, FOURTHCODINITUNGTUNG, ELCINCO, and possibly others) grant 20,000 Cash each. Codes expire weekly; check the codes page on every refresh.

Mr. Lupin is available to all players after the Aug 5, 2026 update, but only buys tier-4 and tier-5 cars in good condition. There is no separate unlock beyond owning the right car tier.

Yes, at the new 49,000-auction cap. Pair with metallic or pearl paint and route to Mr. Lupin for the best payout.

Launch the game, sell your first car, click SHOP on the left, scroll to the Codes section, paste the code, click REDEEM.