: Prioritize upgrading your facilities to hire more staff. A larger workforce significantly speeds up both design and production phases.
These are the "wiki deep dive" findings from veteran leaderboard players. idle car manager tips
: For your primary sales car, research and decrease the engine to 1 cylinder . This lowers production costs while you funnel the saved points back into efficiency to maintain a saleable quality. : Prioritize upgrading your facilities to hire more staff