I am planning to buy a bike below 45k in Delhi. Which is better Bajaj XCD 125 or Passion plus?

Features like maintenance, milleage, reliability and problems that occur with time( sound in engine, brakes, lights, etc) have to be considered!

Any experiences of them

I think I am qualified to answer you on this.

I have used both the bikes and believe me XCD is much better bikes in all the terms and beats passion flat and square.I hav used XCD from last 7 months but it still runs like new despite rough usage. the only grouse is it does not have a option of disc brake.

She is gem to ride in city Much complete bike than passion.

Go for XCD. For this segment XCD is the best in terms of mileage, digital equipments, style etc.. Moreover its more powerful than passion.
Another variation in XCD i.e. XCD sprint is going to launch shortly. It is much more powerful than regular XCD even though they share same engine(125cc) but will provide a bit less mileage than regular XCD.

Bajaj XCD 125 is better and you can test ride of bajaj platina .
And take suggestion on your requirements.
you can compare the bikes features on this site. this site has given specification in nice way. Have a look : http://www.infibeam.com/Bikes/

sadly none are better...thats why no one has answerd...stick with a well know make,eg,honda/yamaha...but its up to you in the end.