1.4 lacs are the reg charges if you r a tax payer and yes you need to pay both ... but you can re claim it from fbr showing your car's invoice ... or reg charges
lets say you have paid 1 lac tax throughout the year and you file a claim of 1.5 lacs .. 75k witholding tax on cars invoice and 75k in reg ... u can get back 1 lac of the 1.5 lacs you paid which is equal to the tax you paid thoughout the year ... hope it helps ... keep your tax returns with you ... you are going to need it throughout 
Sent from my GT-I9300 using Tapatalk 2