DETROIT - Even by the standards of battered automakers, Chrysler is in dire shape. Its sales in December were down a stunning 53 percent, far worse than Ford or General Motors, and analysts say it probably won’t survive the year as an independent company — despite $4 billion in government loans and the possibility of more.

Things were so bad last year that a single Toyota model, the Camry/Solara midsize car, outsold the entire fleet of Chrysler LLC’s passenger cars.

“Basically they’re done,â€