1.3 MJD, 1.5 DCi(K9K) , Toyota 2.5D are examples of some extremely fuss free engines over the years
^^ Ive had a bunch of cars with these engines and still have 2 of them in my garage
Hyundai used to have issues in the past but with the advent of cars since the 1st gen i20, they really upped their game and are easily on par with the above engines, probably even more refined
I did alot of research before plunging for a Tucson (2.0 CRDI)
1.6 CRDI and 1.4 CRDI are some excellent examples of engines that have proven their reliability
I dont think there is any doubts on Hyundai quality and reliability anymore
In fact Hyundai is the only manufacturer to give a fair balance of power,refinement,maintenance etc right now for the price imho
As for Ford diesels, previous gen Fiesta, Figo and Endeavour had a tonne of issues and maintenance costs
Current gen is improved but 1st batches of Ecosport had a few engine failure cases in 2017 (replaced free of cost by Ford, no questions asked so no doubts there)
But Hyundai is still ahead , near enough to challenge maruti as the segment leader