Calculation Method of 12mis in the Automotive Industry?
3 Answers
In the automotive industry, 12mis refers to: the failure mode rate reflecting part durability (mid-term 12-month failure rate). A minor service at 10,000 kilometers includes engine oil and oil filter, as well as the three filters: oil filter, air filter, and fuel filter. At 20,000 kilometers, the service involves replacing the engine oil, oil filter, air filter, and cabin air filter, along with some routine inspections. Below is an introduction to car maintenance: 1. Introduction to car maintenance: Car maintenance refers to the preventive work of regularly inspecting, cleaning, supplying, lubricating, adjusting, or replacing certain parts of the car, also known as car servicing. 2. Scope of car maintenance: Modern car maintenance mainly includes the engine system (engine), transmission system, air conditioning system, cooling system, fuel system, power steering system, etc. 3. Purpose of car maintenance: The purpose of car maintenance is to keep the car clean and in good technical condition, eliminate potential hazards, prevent failures, slow down the deterioration process, and extend the service life.
When I first started in car sales, I often calculated this 12-month inventory supply. It's actually not difficult - you just take the current number of vehicles in the parking lot, divide it by the average monthly sales, and multiply by 12 to get the result. For example, if there are 300 cars in inventory and the total sales over the past year were 1,200 vehicles (averaging 100 per month), then it's 3 multiplied by 12 equals 36 months of supply, indicating excessive inventory buildup. Our company uses this metric to determine whether we should offer discounts/promotions or reduce production. When the number is too high, it means cars aren't selling and we need to clear stock; when it's too low, we need to order more from manufacturers quickly. Customers often ask why there are promotions - the source is this calculation helping us get early warnings. Don't be intimidated by the numbers; the key is monitoring trend changes. In the highly competitive auto industry, maintaining a reasonable 6 to 9 month level is ideal to avoid tying up capital. In daily work, I adjust calculations by combining sales data with seasonal factors to make it more accurate for decision-making.
As someone who has worked in a factory, the 12-month inventory supply calculation in the automotive industry is quite important. The core formula is inventory divided by the monthly sales rate, then multiplied by 12. The monthly sales rate is typically obtained by dividing the total sales over the past 12 months by 12 to get the average. For example, with an inventory of 5,000 vehicles and an average monthly sales of 400 vehicles, the calculation would result in a 12.5-month supply. This helps adjust production line speed—for instance, slowing down the assembly pace if the value is high to avoid overstocking, or increasing overtime efforts if it's low to ensure dealers have vehicles to sell. Supply chain managers monitor this daily as it reflects supply-demand balance and directly impacts cost control. Automakers must plan precisely to avoid resource wastage.
