SCC;
The 2002 Altima was the first year on this design. After you read enough at the two excellent owners sites listed above ( freshalloy.com and nissanclub.com ) you will discover that the old saying is true. Never buy a car in its first year of production. I have a 2003 SE made in September 2002 which was about 1 month into the 2003 model year production.
I have had some interior finishers replaced, specificly the center console, a "B" pillar and a "A" pillar, replaced due to poor fit, and a rattle under the dash fixed.
So I've just told you my particular problems.
Thats all you'll hear from posters to forums...their problems. Its human nature.
Mechanically, my copy of this car at 35,000 is good.
Oversll, the paint is not very sturdy. It chips like crazy.
The interior quality on the 2002 to 2004 models is below what you will find in most of the competition.
Gas mileage records I've carefully kept over the life of the car show about 26 mpg or 10.6 lt/100 km. Thats my real world mileage. A long highway cruise can see you reach up to 32 mpg or 8.5 lt /100 but thats really streching it.
The 3.5 liter V6 recommends premium, but the manual cleary states that regular is ok, and mine runs fine on regular.
It has a big turning radius, so it can be a bear to manuever in tight spots and get parked.
Ride and room are very good. The SE has a firm "sporty" suspension but doesn't beat you up. Just don't expect Camry / Buick soft .
Its not really the sports sedan the marketers would have you believe.
It IS a roomy four door, built for a price with cost cutting you can see on the interior . What other cost cutting you can't see has shown up in the forums. Warped rotors for those hard on the brakes. Blown struts for some. Transmission and engine failures for the unlucky.
Nissan was facing bankruptcy before Renault invested in them big time and Carlos Goshn the nissan president formulated his turn around plan. That plan was to build cars people wanted while trimming the big fat at Nissan.
He trimmed a little close to the bone on the Altima, and I made them pay for it in my warranty claims. Buying used, you don't have that luxury. However, I'm not seeing the used prices hold up, so you may get a good price and have a lot of car for the money.
My advise is look for a 2003 model. They had a lot of bugs worked out.
Would I buy it again?
No, and the clincher for that is the dealers
Nissan dealership service is mediocre for the most part.
I've found Toyota here in Toronto to be excellent.
Today I'd go for the Mazda 6 with a four cylinder and perhaps a manual seems like the smarter choice now.
Better mileage, better interior, better handling, bigger healthier corporations standing behind it.
Very nice styling to my eye, and a smarter car for my needs. I was seduced by the V6 power. I seldom get to use it on our clogged streets.
I do see a lot of four cylinder models of the Altima, and they seem to have adequate power.
Some fours did have catalyst breakdown and resulting engine destruction, but that has been covered by a nissan technical bulletin.
I'm not selling mine anytime soon. I'd take a bath on depreciation, and the car has been reliable, with no major grief. Others haven't been so lucky, but they are still selling well.
Good luck with finding a good used sample.