I don't know about other manufacturers, but from my few years of working at MSIL, I know that a mass market OEM simply cannot make cars according to what a customer orders at the dealer level.
Just imagine a regular month at MSIL where 1,00,000 cars are rolled out of the production lines - considering a 6 day working week (assembly lines work on Sundays only in rare, unavoidable situations) - that is 4,000 cars per day. (Let us forget the huge inventory at the OEM yards and hundreds of dealer stock yards across the country for a moment, and consider the average production as 1,00,000 cars in a month).
Now, out of these 4,000 cars made per day - there are 13 models, and a mind-numbing number of variations.
Let us consider the bare basic
Alto800.
Alto800 comes in
7 variants - STD, LX, LXi, LXi Airbag, LXi CNG, VXi, VXi Airbag : and :
5 colours - that alone makes it
35 variants of a single model which has basically one fuel option (barring the single CNG variant) and zero factory options.
Apart from the Gypsy which has a separate assembly line, many of these 13 models are made on same assembly lines - and at speeds which enable assembly of 4000 cars in a single day (even considering multiple shifts and multiple assembly lines, the speed at which lines move has to be seen to be believed).
For these 4,000 cars - hundreds of suppliers supply tens of thousands of components every single day - simply because any smart manufacturer maintains next to no inventory at the factory warehouses - they follow a very efficient
Just-in-time policy. These hundreds of Tier 1 suppliers depend on their Tier 2 and 3 suppliers for their sub-components. Not to forget, MSIL themselves and many of their suppliers have to depend on
imported components / raw materials from across the world. To transport these at an affordable cost, they are shipped by sea and many times,
takes up to 3 months from time-of-order to time-of-arrival.
Now, if MSIL was to receive my order after I make a booking at one of the 1000+ dealers across India for a specific model in a specific colour and fuel option and let us say, with a factory option such as ABS (like the Ritz VDi ABS) or Airbag, the efforts, co-ordination and time required to make a specific car allotted to me is unimaginable. To put it simply, it is impossible to do it efficiently!
This is what actually happens:
- Production planning department, Marketing and Sales personnel sit together, co-ordinate with various departments across the company and make production forecasts for 3 - 6 months. It is an incredibly difficult task and impossible to get right perfectly, unless the OEM is ready to hold an inventory of tens of thousands of cars, at any point of time.
- Also, the monthly sales vary widely according to the time of the year (model year change, expected changes in Union Budget) and regions (regional festivals).
- The models, variants and colours which sell the most - say Swift VXi in silver (just a random example) - of course, you can plan in large numbers. But what about, say, a WagonR VXi ABS option in Chocolate Brown? How many of those sell month-on-month?
Dealers, in order to not lose a sale to competitor(s), many a times, hold excess inventory. If they don't have the car you want, they simply enter the order in the system which is received the Vehicle Dispatch department at the manufacturer who check the inventory and allot the vehicle accordingly. If it is not available at the factory, the order is transferred to Production division who then plan it for the next available time (at least not in the same month for a manufacturer where the production lines are already running overtime). That is why, sometimes, your car takes a long time to arrive (other than of course, if the dealer is useless and does not order the car on time).
Hope this helps in some way
AveekKumar! Cheers!
