After a tune up. Plugs,wires,cap,rotor,fuelfilter,K&n Air Filter,o2 sensor and injector cleaner i get between 25 and 27 with my 95. I filled it full and took it to new jersey today. 293 miles on a half tank. Lots of traffic and the rest cruised at 75mph. Very happy with that milage and the speedo and odometer are in tune with the GPS. The gas guage is right on the money too. So if you do a full tune up you should get around that with a 5-speed.
1998 TJ Wrangler SE,137k,5-speed,Blue,2.5 Low Output,Meyers Plow
2011 Vw golf TDI 10k miles,6-speed manual,2.0 Turbo diesel,White