Gotcha. :smile:
Not to get into a pissing match here, as I think Ken, NSXGMS and I are all defining "remaining" NSXs differently. I consider "remaining" to be "in decent shape" so it would probably exclude anything for sale less than ~$20k and those with salvage titles. In other words, only the nicer ~$28k+ early NSXs. That said, an attrition rate of 2% (ie, that the average car stays "clean" as defined above for 50 years) is obviously too low. Likewise, I'm sure there are more than 2500 salvageable, NSXs lying around too.
My guesses from work were actually too conservative. The "precise" figures for each attrition rate, for total current U.S. NSXs is:
2% - 6933
4% - 5312
5% - 4655
6% - 4084
7% - 3587
10% - 2450
12% - 1916
15% - 1344
These cars get driven, and therefore wrecked, and due to expensive repairs, are often totaled/salvaged.
How did you do the maths? Formula?
Just a simple waterfall spreadsheet with annual production by model year, as per the FAQ and with 250 or so for the last few years. Each model year is reduced by [x]% of the previous year's remaining NSXs. Think of it as a half-life type calculation for each model year. In the 90's, attrition would have just been due to accidents but now would include accidents + wear, so the rate of change would increase technically.
I like my calculation, so screw you guys, I'm going home. :smile: :biggrin: :wink:
In case you're wondering where I got it from, Honda's press website shows that 698 NSXs were sold in Canada through the end of 2004 (calendar year, not model year). Since they were only selling a few cars a year by that point...Thanks for the 700 number NSXtasy!
I think it's a reasonable assumption that the number of USIM cars imported to Canada equals the number of CIM cars exported to the United States. Even if the numbers aren't exactly equal, the difference is likely to be quite small.That means that even if 200 have been brought here from you fine fellows down south, there are probably less than 750 in Canada.
That's the right way to do the calculation - except we know the exact numbers for each of the last few years (thanks, Ben!) so you don't need to use 250, which is an overestimate.Just a simple waterfall spreadsheet with annual production by model year, as per the FAQ and with 250 or so for the last few years. Each model year is reduced by [x]% of the previous year's remaining NSXs.
I like my calculation, so screw you guys, I'm going home. :smile: :biggrin: :wink:
Anecdotal evidence regarding individual occurrences is almost never indicative of any need to change assumptions in the aggregate. This example is no exception."sjones" has noted a bunch of crashes in the last 3 months. That's at least 13 crashes in the last 3 month just on prime alone that we know of.
http://www.nsxprime.com/forums/showpost.php?p=819371&postcount=2
Makes me wonder if the the 6,000 + figures are a bit high.
My own opinion is that "remaining" should count any car that's roadworthy.
How did you do the maths? Formula?
Just a simple waterfall spreadsheet with annual production by model year, as per the FAQ and with 250 or so for the last few years. Each model year is reduced by [x]% of the previous year's remaining NSXs. Think of it as a half-life type calculation for each model year. In the 90's, attrition would have just been due to accidents but now would include accidents + wear, so the rate of change would increase technically.
Well the calculation is correct but the attrition rate is much too high.
Well the calculation is correct but the attrition rate is much too high.
Yes, I agree, Ski Banker's method of caluculation is particularly thorough and could be extremely accurate provided the attrition rate used in the formula is correct. I was hoping that he was using an accepted or standardized attrition rate for the NSX or other similar exotics based on insurance data, etc. but it seems the rate was merely guesstimated.
I'm sure a fairly accurate attrition rate for the NSX could be devised--why not use the established attrition rate for a F355? Basically the same years produced, somewhat similar sales numbers, very similar cars treated almost equally with a fairly similar median age for the owners...I'm guessing official attrition rates aren't easy to come by--or Ski Banker would have used it...?...
--why not use the established attrition rate for a F355?
Correct. Median mileage on NSXs is 5K miles/year. On Ferraris it's under 2K/year.Ferraris get driven much less
Yes, I agree, Ski Banker's method of caluculation is particularly thorough and could be extremely accurate provided the attrition rate used in the formula is correct. I was hoping that he was using an accepted or standardized attrition rate for the NSX or other similar exotics based on insurance data, etc. but it seems the rate was merely guesstimated.
I'm sure a fairly accurate attrition rate for the NSX could be devised--why not use the established attrition rate for a F355? Basically the same years produced, somewhat similar sales numbers, very similar cars treated almost equally with a fairly similar median age for the owners...I'm guessing official attrition rates aren't easy to come by--or Ski Banker would have used it...?...
Sure you could. That's exactly how the Integra Type R analysis was performed. Oh, and querying that "proprietary industry database" consisted of pulling a Carfax for each VIN. You'd just have to do it for more than twice as many cars as for the ITRs.I imagine one of the Prime guys in the insurance industry could just lookup U.S. NSXs and see how many salvage, etc. titles were issued. Maybe do a search in that proprietary industry database for the first few NSX-specific VIN characters. It wouldn't directly answer the question, but would be a good first step.
It's not basically the same car. Ferraris get driven much less and are much less reliable so they're much less 'pushed'. The NSX invites you to rev high and drive fast because of it's reliability and cornerability.