There are at least four translations of Madame Bovary...
...and the newest one, by Margaret Mauldon, is horrible. At least according to Clive James.
... Already, though, it is hard to suppress a suspicion that in the matter of historical fidelity things are out of kilter, and the suspicion intensifies once the book is opened. Professor Malcolm Bowie, who wrote the informative introduction, makes much ado in his back-of-the-jacket blurb about Flaubert's precision, which the professor assures us is matched by Mauldon's brand-new and meticulously accurate translation of the actual work. Any reader wishing to believe this is advised to start on page one. He had better not open the book accidentally at page 178 [end of chapter 12, in part 2], on which we find Emma's lover Rodolphe justifying to himself his decision to ditch her. Rodolphe is supposed to be a creep, but surely he never spoke the French equivalent of late-twentieth-century American slang: "And anyway there's all those problems, all that expense, as well. Oh, no! No way! It would have been too stupid."
Just to be certain that Rodolphe never spoke like a Hollywood agent, we can take a look at the same line in the original: "Et, d'ailleurs, les embarras, la dépense … Ah! non, non, mille fois non! Cela eût été trop bête!" The perfectly ordinary, time-tested English idiom "No, no, a thousand times no!" would have fitted exactly. The awful possibility arises that Mauldon has never paid much attention to English idioms like that. Instead she thinks "No way!" is perfectly ordinary. We can take it for granted that she knows the French language of Flaubert's era inside out. (She has already translated, for the same series of Oxford World's Classics, works by Zola, Stendhal, Huysmans, Constant, and Maupassant.) But she has a crucially weaker knowledge of how the English language of her own era has been corrupted. You might say that English has always advanced through corruption, but "No way!" is an idiom so closely tied to the present that it can hardly fail to weaken any attempt to summon up the past. In Alan Russell's translation of Madame Bovary, first published by Penguin in 1950, there is no "No way!" Probably the phrase did not yet exist, but almost certainly Russell would not have used it even if it had. What he wrote was "No, no, by Heaven no!" Not quite as good as "a thousand times no!" perhaps, but certainly better than "No way!": better because more neutral, in the sense of being less tied to the present time.
Looking at this online version of Madame Bovary, I can’t find see who the translator is. A little investigation, based on James’s comparisons, proved inconclusive. The last sentence of part 2, chapter 12 is interesting. It reads: “And besides, the worry, the expense! Ah! no, no, no, no! a thousand times no! That would be too stupid.” Just as James recommends.