186 at Dartford according to the website. However, the town centre is notorious form traffic problems. Pushing more people to use their car into a station where there is a strike and where the TOC has suggested not to travel, isn't sensible advice. Dartford's station car park will probably be full by 0630. It's been pretty much full by 0730 on a weekday.
Ebbsfleet has a huge car park but the A2 is again, notoriously bad. If there is a sudden influx or people trying to park locally, and cram themselves down the A2, then those making that decision need to compensate for the potential traffic hell.