Look, Mitsubishi Automobiles is pictured above. It's a dried up, rusted out, dead brand. There is only one way to save it.
Scuttle the ship. Abandon the world market and become JDM only. Then fanbois will come out of the wood work and beg for their return. Make a new Evo and watch the world clamor for it, but, ignore them for one whole generation. Their demand will incubate for years and people will forget how bad their cars were.
Then, make a whole new, from ground up, product line and storm the beachheads of the different markets. Then people will snap them up and Mitsubishi will be successful. However, they must not rest on their laurels and let the product grow stale, as this is what lead them down the path that they are currently traversing.