Regret's Assault Carrier acts different than it did in Halo 2. In Halo 2, it flies to the outer city and then jumps while in this game, it is not moving at all and then just jumps.
There is a space elevator near Mombasa, Kenya. Space elevators must be located exactly on the equator, but Mombasa is over 4 degrees south of the equator.
When Dutch's Pelican drop-ship is shot down by Banshee fighters, Dutch's cry of fear can be heard - and is labeled as coming from Buck in the subtitles.
The maximum ammunition of each weapon should be a multiple of the maximum ammunition carried in each weapon, but this isn't the case with the Brute Shot, which carries 5 rounds in the magazine and has a maximum ammunition amount of 12.
All parked cars are on the right side of the road. In Kenya, all traffic drives on the left (although they may have changed to driving on the right sometime before 2552).
When the carrier jumps to slipspace, an electro-magnetic pulse is generated. Despite being strong enough to knock out the military hardware of the drop pods, the electronics in New Mombasa are still active.
Signs above roadways say that they are open. However, the doors to these areas are initially closed and take time to open, which is not efficient for traffic use.
Virgil is a subroutine of the larger Superintendent computer created by Daniel Endesha to care for his daughter. It was apparently secret and not meant to be known outside of the Endasha family. Although Virgil is known to Commishiner Kinsler it would be unlikely that a cop would refer to the Superintendent as "Virgil" as the cop encountered in Data Hive does.
Captain Dare refers to the rest of the team as 'replacements' when they show up. They are reinforcements, not replacements.