I am using zed Di from more than 3 years.
Done 96000 km so far. It is very good car in its segment and I have no doubt at all about it.
Although spares and servicing is expensive but fuel economy is unmatched.
I am getting an average of 20 kmpl in Delhi.
Finding spares sometime made you feel bad, but overall performance is good.
I had traveled in various parts of northern India and I prefer to use this car for distances below 1000km.
It really goes very smooth. I travel to Rajasthan, punjab often in my car and economy wise it beat the local transport buses. Even bus tickets are costly if you are travelling with family (3 or 4 people).
I had some bad experience in servicing from local dealer. All the breakdowns which I faced in this car are due to improper servicing by maruti authorized service centers. Once they punctured AC piping, but now I found some local mechanics who are very economical and my car is on track once again. I would strongly recommend all zen Di users to get it serviced from the service center who have experience in servicing diesel cars.