Sirji in that case the businessman needs to run to his CA and ask him how much he can spend on a car at max.
The CA will have a look at quarterly income, annual income and what not and then will give a number and this number will be the amount which you can spend in cash for a car.
Turn over is nothing much to talk about, revenue generation is what matters in case of purchases.
Turn over when combined with your assets and all BS helps you get the loans for anything and everything, relying on your income..err..taxable income as well as your white collar savings/money at the time of purchases of cars etc is the best way. Go, get the number from your CA and then see what fits your budget or if you want to make a cash purchase or loan. (Personally we always buy cars in cash only, there was a loan on a car in seven figures but it was also paid off in next quarter itself)
Sirji but car loans don't give any kind of tax exemption until the car is bought on the name of your company and you have shown that you use it for your business purpose. But that has it's own drawbacks and hence people buy it on their own name and if bought on ones' own name then there is nothing called tax exemption on car loans. In fact I guess you have to put a yellow plate now on the company name registered vehicles because it fells in the category of the 'vehicle being used for commercial purpose'. So if your vehicle is a white plate one then it's registered ont he name of individual and if it's registered on the name of an individual then there is no tax exemption.
I'd suggest you visit your CA or income tax advocate; they will let you know of all the terms of conditions of everything. That will help you learn all these financial fundas and loopholes and how to use them for your personal benefit too.