Gas Mileage Impact Of Dominator Touring Exhaust On A Triumph Thruxton

A few years back, I created a chart to track the gas mileage I was getting on my 2013 Triumph Thruxton. At that time, the bike was basically stock, and I was pretty impressed with the miles per gallon (MPG) I was getting. If you are looking for information related to the gas mileage on a stock Triumph Thruxton, pre-2016 model, you can find that right here.

Fast forward to 2016…

I put some new pipes on the bike back in 2015, specifically the Dominator Touring exhaust. While I continued tracking my gas mileage, I never got around to publishing those results.

This post is all about the gas mileage impact of Dominator Touring exhaust on a Triumph Thruxton. Specifically, a pre-2016 Thruxton. I’ve also taken the chart a step farther by calling out Miles To Empty (MTE) – meaning how many true miles can you get out of a full tank.

Triumph Thruxton With Dominator Touring Exhaust MPG Chart

The first chart will show the gas mileage I’m getting in MPG from the time I installed the Dominator exhaust in 2015.

As you can see, it’s definitely less that what I was getting with the stock exhaust.

I was averaging just over 43 MPG with the stock exhaust. In the last year, I’ve seen my average gas mileage drop to just under 38.5 MPG with the new exhaust. That’s a rather significant 5 MPG drop.

Triumph Thruxton With Dominator Touring Exhaust MTE Chart

The second chart will show the calculated miles to empty (MTE) based upon a full tank.

Let’s talk about at that for a moment.

While the stated gas tank capacity on the 2013 Thruxton is 4.2 gallons, the actual useable amount is more like 3.7 gallons.

So based upon the data, I should be able to average just over 142 miles per tank. Compare that to the stock exhaust, which was just over 160 miles per tank. That’s a full 18 mile difference per tankful of gas.

Conclusion

So what’s the gas mileage impact of Dominator Touring exhaust on a Triumph Thruxton? Who the hell cares. I love the sound of my Dominator Touring, and I didn’t buy my Thruxton to be worrying about the gas mileage I was going to get.

However, if you are the type of rider that is fretting about getting the published MPG figures, keep that in mind before you go upgrading your exhaust.