Do you have a citation for that? (genuinely curious - I tried to find a list of what an 'acceptable period' for lifetime would be but couldn't find one, for any goods). I know Apple products have a 12 month warranty, but are subject to at least a 24 month warranty/guarantee given the 'reasonableness' test. I'd find it hard to believe that a reasonableness test would find that a $500 iPhone is expected to function for 2 years, but a $150,000 luxury vehicle is only expected to function for 12 months.