Dear Sir,
Ideally, if you a have inherited any funds, you should have disclosed the funds in your income tax return. Though, it's tax free but you are liable to disclose it.
But since the cost of car is only 6lacs, I don't foresee any problem.
Please feel free to call/revert in case of any doubts
Thanks and Regards
Abhishek Dugar
CA CS B.Com