Quote:
Originally Posted by visualguy
I think car manufacturers should not continue to sell cars with an engine that's known to have significant problems. It's not fair to have a "buyer beware" policy where buyers need to research the engine, and decide if they want to deal with its problems or not. Also, the manufacturer typically knows about the issues long before they are all over the Internet.
Indeed, durability and reliability aren't top design goals for these luxury German cars. For example, they keep producing engines that are known to have carbon buildup problems. However, there is a big difference between that type of problem, and the situation with the N63 engines.
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We'd be short of diesel engines over here in Europe, if the manufacturers took that stance based on what appears to be a big quality issue.
We've had a serious issue with the BMW M47 diesel engine (and M57 in much smaller numbers), with swirl flap ingestion, which destroys the engine in most cases.
Realistically no one has got to grips with the numbers, or percentages of failure, not sure even BMW knows the true extent, as many fail outside the BMW network and get sorted without contact with BMW.
We also have had (still having) serious timing chain issues with the N47 diesel engine, again with many total failures and destroyed engines.
We are talking millions of engines in these ranges, but what percentage of failure? Is it even 0.1%? That is the big question and also whether BMW should intervene. They have at last taken responsibility for a specific date range of manufacturing, for the N47 timing chain issues.
The M-series swirl flap failures, BMW continue to deal with on a case by case basis. Many users have removed the swirl flaps from the intake manifold, put in blanking plates, to run with peace of mind. So figures are now totally distorted on the real rate of actual/possible failure.
BMW have taken the route of product improvement, redesigns through the years of production. Is it any different for any engine, or identified issue?
HighlandPete