Car List: the car list is a significant downgrade from previous horizons and even current motorsport, FM4 had the best car list of all forzas, including every day cars (Kia Ceed, mazda 2 etc.) and exotics and even more regularly seen sports cars ( Saleen S281, wiesmann, spyker, RUF etc. even the 2005 ford mustang GT for gods sake) which horizons and mainly FH4 miss out on
Gameplay/Multiplayer: honestly the least “festival” entry in the series, you dont really have any connection to the festival apart from starting there, FH1 had a full blown story while FH3 had you being the CEO of horizon and upgrading sites, the multiplayer is a disaster, horizon should have ghosting on at all times, the anti wall ride system is too inconsistent, no online adventures on DLCs, no ability to host our own events with different mixes of tracks and no new tracks being added to the roster, with drift adventure suffering the most with the lack of variety of tracks, the game offers no direct option to organize (big) meets/cruises (even with randoms on the lobby), no interaction between people on lobbies or even option to do so, non-toggleable drivatars when offline, and even a option to walk around the meet area ( AS SEEN IN ONE THE GAMES MENU CLIPS)
Map: The least fun and most uninspired map in the whole series, the landscape is very dull and roads get boring fast, fortune island is fine but too small while lego is just…ugh, the main map feels like it was designed around the season changing.
Sound: previous forzas had a team of sound designers on a contract, when the contract ended in 2016 and the team copyrighted all of their works meant the newbies had to start from scratch with all sound files and program a new audio middleware with only about a 1 and a half years time for more than 500 cars and all the ambience and general games sounds, its pretty evident which cars were made in the “yeah we still got time” and the ones which were not.
Clothes/Cosmetics: the worst addition so far in the entire forza series, there were more clothing items than cars at launch, disgusting, i sincerely hope this clown fest wont be present in FH5
Bugs/Glitches: i had to solve more problems with FH4 than any other game on PC so far, then the obvious bugs and inaccuracies, like the see-through exhaust, the supras spoiler issue etc.
All in all the worst Forza Horizon or even the worst ever Forza title, if i had to describe it with 2 words it would be RUSHED and LAZY, and i dont really see it improving in FH5 except for eye candy graphics to show off the new xbox