Hi,
Here are some points which you might also like to consider.
Diesel vehicles are great for people who ride a lot and want to get it done cheap.
Petrol vehicles are good for people who do not run as much and don't like to take maintenance very seriously.
Well, to start off with, a diesel vehicle of the same make and model would cost more[1,2 or more laks. Depends on vehicle and age].
The registration cost of a diesel vehicle is slightly more.
The engine oil and service elements which you need to change in a service are of more cost in a diesel vehicle.
So, generally you'll need to spend more money on a vehicle service.
The battery you need for a diesel vehicle must be of a greater capacity in AH. Therefore the cost of battery replacement is higher.[battery replacement
is something which you do not do often, but just mentioned ]
Since the engine is larger and heavier in a diesel vehicle, the front suspension is made stronger than a petrol vehicle. Therefore repair costs related to suspensions would be higher. Also, other parts such as clutch-plates, engine mounts would cost more for a diesel vehicle.
In addition to these, a diesel engine usually faces an engine overhaul after some long running[10-15 years]. Some experience this after 150,000km and some even 400,000km. It depends on your driving and engine wear and tear. But, usually petrol engines do not face such a situation unless you are not very cruel to the engine.
So, generally buying an old diesel vehicle without proper checks is throne to get you stuck in the garages a lot and waste time and money on endless repairs. However, most old petrol vehicles do not trouble so much and can even be run with some problems without immediate repairs.
So, if you are not a technical guy who does not like to spend time on the garages, I recommend you to go for a petrol vehicle. If you are, then the choice is up to you