best gold grind robots

Get a hangar that consists of 5x Ecu cossacks. Play only Yamateau and Springfield and capture as many beacons as you can.

would like to know a bit more info, like what level are you, what tier were you previously in, etc?

for the most part, going for damage can be very luck-of-the-draw, but you can always get gold if you focus on beacons. its also the main way to win, and you only get gold if you win, so its like a win-win by going mostly for beacons, right?

at lvl 1-10, Cossack and Vityaz were my go-to, but looking back, i would've done one Cossack, rest Schultze
at lvl 11-20, keep the cossack and schultzes around, but you have earned up some gold so get at least 1 Gepard, but not more than 2 (they aren't as useful later in the game, plus you can't make gold if you keep spending it). geps are great all-arounders in lower league matches. Pinatas and Thunders at this early stage should be your priority. work to level light bots to lvl 4, and weapons to lvl 6,
at Lvl 20-30, the same gepard+Cossack+Schultze will do you justice, just start buying magnums and tarans to give you the clear edge in battle. I started using Boas because they had such high HP, my clanmates seemed taken with Golems, and they just buffed the Vityaz making that a viable option.
at lvl 30+, keep going for beacons, no matter what bots you use, especially with the new MM, you can't consistently win going for damage alone, and if you don't focus on one or the other, somebody else is going to take the gold from you.
at any lvl, you could just support the game by buying gold! its definitely easier that way,

Cheers,

+1
And uh, don't forget to buy enough gold to insta-max them while you're at it.   

I recommend all of this.  It is a small price to pay for the satisfaction of winning at War Robots.

Well, the one issue is that I'm sure Pixo will nerf the Lancelot and Ancille as soon as the OP buys and insta-levels them.  Make them about as robust and potent as a lvl 1 Patton with lvl 1 spirals.