I own a All new Fiesta that has run 25000 kms. My service bill at 10000 kms is 1700 Rs and 20000 kms is 4300 Rs. I'm pretty sure Aspire would be cheaper than Fiesta.
Maruti and Hyundai could come close but not cheap for a Diesel sedan than Ford IMHO.
No, I owned a Ritz DDIS and my cousin owns Fiesta diesel, Figo Diesel and Baleno Diesel
1.3 MJD is one of the most popular engines in India and is made by Fiat and found in multiple cars by Fiat,Maruti,Tata,Chevrolet. The best iterations of this engine are found in Maruti and Fiat cars and is relatively very cheap and easy to maintain.
Ford isnt bad at all by any means but in terms of after sales, expenses , 1.3 MJD has the clear edge
That being said, I myself might buy a Figo Diesel since I sold my Ritz and will probably need a good city car with good torque
Baleno is also on my list but I want something different this time since we already have had the same engine(1.3 MJD) in so many of our cars in the past few years in my family(Ritz,Swift,Ertiga,Vitara Brezza,Baleno etc)
BTW OP should check out Swift Dzire Diesel AMT if he wants, good driveability with a powerful engine