Siam Paragon is a huge shopping mall in Bangkok.You can expect to see a wide range of stores and restaurants here. The mall has been opened since 2005. And, even if there are new shopping malls opening up in Bangkok every year, many people still choose shopping at Siam Paragon.
If you want to drive to Siam Paragon, it is possible. The parking fee is not expensive. It is free for the first two hours and the next hour is 30 baht. Besides, it would be cheaper than this, if you buy something or use services in the shopping mall. But to find a parking lot, it is very difficult; you could face the traffic jam at parking space and it could take up to more than an hour especially on Saturdays and Sundays.
Taking a cab seems convenient. But if you know Bangkok well, you would not choose this option. During peak hours, the traffic in front of the mall can be crazy.
For me, the best way to reach Siam Paragon Shopping Mall is taking BTS. Just take a BTS Skytrain to Siam Station. From the station, it has a skybridge linked to Siam Paragon’s M floor. And not more than a minute, you will be in the shopping mall.
P.S. Many Thais who drive choose to park their cars somewhere and then take BTS to Siam Paragon.