DiRT

The online for this game achieves do not have to be done in ranked despite what it says in the description.

I got all three in private player match races. However, it seems that now you need to have at least two players in the match for the achieve to pop.

This achievement due an update can no longer be done solo you will have to find a friend or booster to help you with this simply invite them to join you and finish with them staying at the start you win and they'll get a DNF is simplest. Note the online for this game is all but dead. (Repeat for hill climb achievement)

Online on this is practicly dead so i am willing to help people out for BOTH the online achievements, bare in mind that they can be boosted in a private match but must have TWO people for the achievements to count, all i ask is for people to either set up a session or vote positive for the solution and not to bad mouth me off.

EDIT:
In order for you to get this you must win a rally race, it says it must be ranked but you can do it in a private game with a buddy. So who ever wants the achievement needs to win and who ever doesn't need it can sit back and relax lol.

First off, I really suck at driving games, but even so, there are still players out there that occasionally have worse days than me. Finding them is how I got this. If you don't have a buddy to boost this with, keep signing out of sessions with good players and you will eventually find someone who are new to the game. Find a type of car and a track you feel comfortable with (e.g. 4WD in England), and keep voting for an option with one or preferably both of these.This will, of course, help you get an edge over the players even newer to this than yourself.

I started playing online today after getting the 1000 miles in career mode achievement, and the first races were on tracks I haven't driven on in a long time. After I logged out of this session (with one guy that constantly beat me with 20 + seconds), I found myself alone in a session, voted for a track and a car I felt OK with, and suddenly there were two other guys in the session. They were probably new, as they didn't even vote, and I soon got both this and the hill climb win achievement. As Earlydaze says in his solution, the online for this game is nearly dead, so there are not many sessions to choose from.