All in all I'd say more people liked it then hated it.
But humor is such a subjective thing... Oh and by the way: The highest rated episode with Chris Evans in Series 23 on IMDB was Ep. 3 with a rating of 2.8/10.
Ah yes, internet voting. That truly secure and ungamable format for gathering public opinion. And yes, IMDB, the Amazon owned site. Some wonderfully bias-free sources there.
If you look on Twitter, Facebook etc you will find a plethora of very angry young men who are furious that the "libtards at the BBC" fired "the boys". The anger around the new hosts of Top Gear was, sadly, inevitable and almost entirely unjustified. While I'll agree Chris Evans didn't work, the BBC had to do _something_ and it was never going to please those people who only ever watch the show for Clarkson.
It was quite clear that those same people would put weird amounts of effort into downvoting anything to do with Top Gear and visiting any video they could find on YouTube and writing "two minutes of this was more entertaining that new Top Gear".
As for the idea that "The Grand Tour" isn't a car show, well that just makes it all worse. Clarkson, May and Hammond might know about cars but they most certainly do not know how to make a general entertainment show. This has been proven time and again both on Top Gear and, now, The Grand Tour. In fact, I don't know anyone who could take a car format and turn it into general entertainment without pissing off one part of the audience or the other. But for The Grand Tour it doesn't matter, the audience is baked-in. Those people who spent their time trolling the new presenters on Twitter, using the hashtag #TopGear to moan were ALWAYS going to watch, and automatically LOVE the new show. Partly because it gave them what they wanted, but mostly because they were never able to see the decline Top Gear had been in for years.
So The Grand Tour has had some good bits so far, and there have been some dreadful bits. I'm not sure of the Jordan film is quite as bad as the India Special, but it was close for cringe-worthy setups. I laughed at the audience fight in episode one - it was genuinely funny. The celebrity death was old after the first two, and unbelievably shit in episode two.
The point of Top Gear was that the car was the star, and people enjoyed the interactions with the hosts around that. We knew that James was going to say "Good news" and then tell us about the Dacia Sandero. We knew that was coming, but it remained funny. The thing that made Top Gear one of the most-watched shows in the world was the relationship the hosts all had with each other. The humour came from those situations, but soon they realised that the audience was growing beyond its gearhead origins. Instead it became something else.
Top Gear, believe it or not, has the advantage here. If those three hosts stick around then we'll see them develop as a trio and a new show will emerge. The fact it doesn't get 9 million viewers is irrelevant, what will be far more interesting is how it builds on what it now has, now the people who were only watching for Jeremy's racist comments have gone. You can spot those people - they're the ones on Twitter who claim Rory is a "token black man" while niftily ignoring his credentials as a brilliant journalist and amazing TV presenter.