Plug Wires, might be a dumb question... Options

[jwells]

My car has recently been only getting about 26-27 mpg when I drive in the city/highway, but still gets ~34 when it's highway only.

I'm thinking it might be the plug wires...on the wires it has "1996" My question is, is that the year those wires were made and most likely put on my car, or do they have "1996" because that's the year of car I have...

They still look okay, I guess, but I don't really know what to look for when wires go bad.

The plugs themselves are only about 25-30k old...so they should still be ok, I believe.



If it turns out the wires aren't the problem, and they say 1996 b/c thats the year car they're for, then any other ideas? The O2 sensor was replaced a couple months ago.

[BlackSTX]

My car is the exact same way and I've done everything that's been listed here. Keep off the gas as much as possible in city driving. That's really good for actual mileage. The EPA estimates are usually way overrated and they're talking about revising the way they're estimated.