I've got a couple, a 14hp and a 17hp. I mow with the 17 in my MTD auto and it actually uses less gas to get the yard mowed than my murray with a 16.5 OHV single cylinder. It may be due to the mower more than the engine, I don't know. One thing I've read over and over about these twins is that they're underrated. So they probably make more power than you think.