This is because both fall in roughly same segments. A person can spend slightly more on WagonR to save on later running costs. It becomes really easy to spend 500-600 Bucks on filling up the tank on LPG vs Rs. 1820 on Petrol as psychologically many feel that the are actually spending 250 bucks only on petrol for going to that movie for the night or for submitting that form.
LPG kit can be installed in Santro at your own risk. I had also thought of installing a CNG kit in WagonR by going in for Rs. 40000 discount today on a Lxi but the current fire incidents are really horrifying. Safety comes above anything else.
I am not against Santro. It may suit some category of people better. I like it's smart looks better than WagonR but technology comes over looks as I spend wisely and carefully.
Here is a technical and overall comparision of the above 3 cars :-
Maruti Wagon R Duo LXi vs Maruti Wagon R VXi - BS III vs Hyundai Santro Xing XL eRLX - Euro III vs Tata Indica V2 Xeta GLS - BS III | Car Comparisons - CarWale.com India
Cars whether having micro computers or better technology inside are ok. after all purpose is to go from point A to point B with sufficient comfort and for that any car is good.
Maruti Wagon R is technically advanced in these parameters -
32 bit on board microprocessor.
Electronic Power Steering which adjusts according to speed and is a delight to use in city as against Hydraulic one in Santro. Hyundai has not kept this in its latest Verna.
4 valves per cylinder resulting in higher economy even after 1 lac km and better throughput by the engine. Santro has only 3 valves.
Japanese technology. Hyundai is also good but not as good as Japanese. Japanese products and games / toys also lasted longer. Normally Koreans like to make more attractive products by using a slightly lower technology. LG/Samsung vs Sony TVs is well known. Why is Sony priced higher although both look almost same.
WagonR is less wider so it's easier to move through the bumper to bumper traffic and it slightly less space is also ok for parking. High Boxy looks allow for carrying even small refrigerators inside the WagonR that's why the name wagon. It's easier to carry more luggage tucked up one over the another.
WagonR looks slightly more fresher because of the recent makeover. However the new Santro 2008 version is likely going to be the best head turner. Santro sells more because of good pricing and better looks. Many people only go for looks and shy away from Desi Maruti factor which they do not like at the back of their mind even though the reliability may better in Maruti. But people are so rich nowadays that they have money to throw around. So they do not bother.
WagonR will have higher resale value because it is newer and Santro 2008 version will be available soon. It is a smarter financial investment and going by the rules of financial investment on NPV, WagonR is better.
WagonR's AC is more efficient as I felt it. I need higher cooling power and the Santro standing in sun needed 15 minutes to cool and moreover the it's 'cool air' was not as good as it should have been. Even sitting inside the Santro, I was literally sweating. Only some time later I felt that it was better.
Santro is also quite quiet when the engine is at idle which is good. Overall both are equally good however by spending 40000 rs more on Wagon R Duo you end up saving almost Rs. 121,254 'More' over a 5 yr period basis my usage of 1620 Km per month. And WagonR runs purringly even after 5 yrs because of that engine alone.
Also as per poll in this thread on Team BHP WagonR won -
http://www.team-bhp.com/forum/indian...-s-indica.html
Like I mentioned this topic never ends. So peace be there !