Air filters and servicing

[vrsmxtb]

Why is it that on many modern cars the air filter is only replaced at 2-3 year intervals? I always treated it as an annual service part in the past, they can't suddenly be any less prone to clogging up!?

[Mound Dawg]

I agree, the one on my Punto looks like the inside of a Hoover bag after three years.

I do 25,000 miles a year in it though.