Simons point, as I read it, was that customers expectations at a higher price point go up; so it is their expectations that should be addressed.
You read it as I meant it. MMC are constantly working to improve quality; however, as per your comments, the development budget is considerably less than main stream car makers (Porsche make circa 30,000 911s a year and even Aston were aiming for 10,000 AMV8s per annum) and therefore, this should be taken into consideration when judging the product; and this, is where education, customer service comes into play.