I understand about the warranty business and why some people may want to take one out for as long as they own their car irrespective of failures. What I do not like is the fact that the engine appears to have very little margin before failure.
There is little profit in new cars these days (though more here than most other countries).I believe a lot of the income comes from warranties / parts and servicing. If the 'safety margins' have been reduced to cut costs with the added bonus of increased warranty sales / servicing as a deliberate move then I do not like it.
With modern engine management that if you have a certain number of combinations (3,100 rpm for 2 minutes on the first monday of the month at 09.45 say) the managment forces a cylinder to run lean and detonate taking out the engine. I do not believe this is happening but you could generate a random engine failure for no obvious reason you then have control over your warranty business no more than 10 percent have this 'mod' and only one percent of them happen to meet the conditions at the appointed time. These random failures scare people into increasing your warranty business.
As I said that is rather an extreme view and I do not believe that is the situation. However random engine failures and scare stories are not going to harm your warranty business.
In my view if a modern engine is properly designed and maintained with quality fluids, filters and parts then they should last for at least 200k. It would seem to be the case that with the 996/boxster unit it may fail even with correct maintenance. This is what concerns me, the reliability we have come to expect seems to have faded in the search for profitability.
Whilst I cannot deny it affects other manufacturers (BMW) there are others with massive safety margins that seem to take abuse Nissan skylines producing double the output reliably on standard components, Turbo supras with massive outputs and standard internals, Honda Vtech enngines etc. Opel/vauxhall units (properly serviced, cambelt failure can be messy)
Back to Porsche, the Turbo, GT3, GT2 units that produce higher specific outputs do not use the crankcase descibed as flexy, Why? has there been a single Turbo, GT3, GT2 RMS failure? Does the higher purchase price allow for more costly engineering?
I also feel that many of the current owners do not drive their cars anywhere near the limits, I tend to be hard on my vehicles whilst maintaining them to high standards and driving them gently from cold, could I rely on a 996 / boxter to take it? not that I am really bothered as they would both be slower than my current car [&:] so not really considering it.
Tony
Without any K series engined cars [
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