other factors and mpg
i believe there are other factors at work here ...
now that i consider my countryman fully broken-in, i have started using the cruise control
no matter how carefully i drive, if i turn on the cruise, the "instantaneous" mileage goes up 4-6 mpg!
i think that the n18 engine is making boost (and sucking fuel) at such low rpm that even the slightest movement of the gas peddle results in extra fuel consumption
the computer is better than the human at keeping the speed constant, keeping the engine off-boost
i have observed this with the sport mode on and off
another observation, i still get better mpg at 55 mph in 5th gear than 6th gear, even with cruise engaged, too low an rpm consumes more fuel
another factor in the USA is ethanol in the fuel, i can buy 93 R+M/2 ethanol free fuel and get +6 mpg over 93 fuel that contains 10% ethanol
so far my mpg findings:
highest: 38.4 mpg, 200 miles expressway at 65 mpg (gps speed), cruise on
lowest 21.6 mpg, 150 miles secondary roads, finishing the running in after first 1200 miles, keeping revs mostly over 4500 rpm, 2nd-4th gear, lots of stop/starts due to stop signs
overall since new, 26.6 mpg, i expect this to improve as i settle in on regular driving as opposed to breaking in style of heavy throttle, high engine load
last tank, 30.1 mpg, a mix of city/urban/highway, my "normal" driving, my last vehicle, 1997 4.3 liter v6 gmc pickup 4x4 5 speed manual got 16 mph under my "normal" driving so i am quite happy with 30 mpg from my countryman
2012 CM S All4 (03/12) | Abs Black w/White Roof/Mirrors/18" White Wheels | Cold Pkg | Sport Pkg | Xenon w/ Black Housings| Manual | Sport Susp| Anth Headliner | Flat Load Floor | Bluetooth | 2 Part Center Rail | Milltek downpipe back exhaust