I think it's all depends on the dealer level payment setup. I could buy a 1.3L bike on CC and 5L through CC for car. In bike case, I used pos machine and they were not interested initially due to the extra charges, but somehow I could convince.
But car dealer had different tie-up with free charge gateway and CC payment possible using online link generated on demand. Payment through this link did not had any service charges extra, but if we use their POS, they asked to pay 2% extra. After paying through online, later I came to know these will be considered as wallet load for credit card and no rewards 🙁. If I've known this earlier I could have used APay card🙁