House batteries not up to ah rating

Water cool a Honda Generator and put a common rail HPFP and injection system on it, and you can add a lot more efficiency to that motor, perhaps another 40 or 50%. I am lucky to squeeze 25 or 26MPG's out of a 3.6L gas Touareg, 33-35 is the norm for the 3.0L TDI diesel, once properly warmed up, which usually takes a 12 to 15 mile freeway drive for all the systems to get close to proper operating temperatures. Once all systems are up to operating temp, there is no comparison. Diesel, all the way. No soot, no stinky odor, nothing. Then we can talk about torque under load, also. Hard to beat a stroker motor that is under bore long stroke from square bore /stroke.