By my math, from my last couple gas fillings, it looks like I'm getting about 20mpg. basically all city driving.

I'm not a skilled or heavily experienced driver, so I would expect that this is probably part of it. much of it is also short distance, start stop type driving.

but what might I be able to do to improve my mileage? its got a new good quality air filter, I've been thinking about replacing the spark plugs and wires, and if it would be likely to help, it might bump that up the priority list.

on the list of maintenance/repairs I am planning or would like to do, is Oil Pan Gasket, Filter and Oil Change, Transmission Fluid filter and top up of transmission fluid, would MPG concern be a further reason to prioritize these?

or is 20 MPG for a 13 year old car actually reasonable, and expecting much more asking too much?

 

I see you don't have any replies, so I'll try & get things started.

All short trip in city stop & go isn't going to yield top mpg on any vehicle, but getting your scheduled maintenance up to date with parts & fluids that say in writing that they meet or exceed MOPAR specs won't hurt, nor will they likely increase the mpg figure much if any, in that kind of driving.

Try & pick your route for the fewest traffic lights, time of day that the traffic is less, no jack rabbit off the line movements, time your speed to catch more green lights, don't idle the engine any more than necessary as in that mode it = Zero mpg.Turn the AC Off, it'll cost about 2-3 mpg less to run it. Keep the tires properly aired up as they'll roll easier & wear more evenly. Use the correct viscosity fluids for the temp range the vehicle will see during its maintenance interval & keep the battery charge topped up with a smart battery charger in the 4-8 amp recharge range to slooooowly top the battery up & it'll last longer & keep the electronics working at their best. Expect fewer mpg in winter, maybe 3-4 mpg loss due to cold weather. Some thoughts for consideration.