All of the above mentioned opinions are ********! Bot vxr/vxl and vxri/vxli have a 1000 cc 4 cylinder engine. How can a cultus vxr have a 3 cylinder engine if an alto has a 4 cylinder engine. Since vxri has an efi engine, it uses 4 spark plugs, thus idiots think that it has a bigger engine. I have both of these models and believe me bro, VXRi SUX! The simpler engine is better and has lesser complications. VXRi has certain advantages, like better fuel economy (on petrol only). There is no difference on cng. vxri has a quiet engine, stylish colours, and shaded headlights. But vxr has a better roadgrip, reliable engine, and stronger body. Vxr has a powerful engine and i've beaten vxri many a times with my vxr. VXRi is much sensitive to water. Vxri faces problems during rainy seasons. So its better to purchase a second hand cultus vxr or vxl model 2005, 2006 and 2007.