What's good mileage for a 2002 tahoe uesd
What do you mean? 2002 are going to have all kinds of mile on them by now. If you can find one with around 100,000 miles on it you could still get 100,000 and a lot more if it was and is taken care of.
If you look around a lot you might find one under a 100k but you will probably have to do a nationwide search.
15 to 18 mpg. ;)
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