The fact that you wont see cars built in 2020, on the roads in 2050+ is a sure sign that cars are way way way less reliable.
In what sense is that a "fact"?
but these differ greater, what is the expected life of an EV v expected life of car built in 1980? You not comparing like with like..
The expected life of a car built in 1980 was 10-15 years. (Obviously, some lasted longer than that, and few may even be still on the road. We're talking averages here.) This is based on average age at scrappage, a figure which can't be calculated reliably until about 95% of the cars in question have been scrapped.
This was an improvement on the expected life of a car built in 1960, which was 10-12 years.
By 2000, expected life had pushed out to 15-20 years.
(These figures are from the US. We might have driven our cars a little longer in Ireland, because of the cost of replacing them.)
For the reason just pointed out, we can't calculate the expected life of cars built within the last 20 years or so in the same way — not enough of them have been scrapped yet. For these cars we rely on statistical projects based on scrappage rates to date, which is a technique that gives less certain results. But useful life expectancy is very unlikely to be shorter than 15-20 years; most estimates are around 20 years.
Modern EVs have a simlar expectancy to modern ICEVs. This is a dramatic improvement by comparison with earlier generations of EVs — the estimated risk of an EV leaving service declines by approximately 12% for each successive year of manufacture. This data comes from a UK study, based on an analysis of MOT test records.