It can take all day if you want to enjoy the drive.
Average driving times?
Big Sur for Travelers with Disabilities
Mjneenan's Big Sur Photo Blog
Scenic and Iconic Sights of Big Sur
Big Sur Trip Report from a California DE
The top questions cover this in detail. Please go to forum website NOT app and read
The CA forum top questions have sample itineraries and a Highway 1 primer from SF to LA
17 mile drive is a waste of time if you are planning to do this entire drive. Most would suggest if you leave LA to stay in Pismo or Cambria for a night and then drive the Big Sur to Monterey and spend a night thereEdited: 17 July 2018, 11:52
The drive itself - not counting stops - takes 5-6 hours. There are tons of places to stop along the way.
Plan on 30 minutes for McWay Falls.
For Pfeiffer Beach, plan at least an hour - it's a 10-15 minute detour off Hwy 1 and then you'll want time to vist the beach.
One must see on your list is Point Lobos - it is about 3 miles south of Carmel and is absolutely beautiful. Plan on spending an hour or so there.
Other good stops if you have time:
Sand Dollar Beach
Piedras Blancas for elephant seals
(there are more good places to stop - but time is short, so I just listed my favorites)
Regarding 17 Mile Drive - since your time is short, I would skip it unless you are a big fan of golf.
Also, please research in advance and plan ahead for your restroom breaks. Many tourists fail to do this and end up relieving themselves next to the highway. There has been some news coverage recently over how that is becoming a major problem. You are visiting a rural area with very few public restrooms which are not well marked and where cell service is notoriously spotty.