2024 Chevy HD DRW and SRW Fuel Economy Test
The Chevy did good for a 3500 DRW truck. At 17.7mpg Chevy made a good improvement. Link The Chevy 2500 made 20mpg Link
Forum Discussion
How one fills matters not unless it’s a MPG test loop returning to the same pump at the same station. In which case, fill to auto-shutoff (only).
Records are for the average over time which is the single accurate method. Each season has weather affecting MPG, and each season has family duties change somewhat. It will take 3-5k miles for that accurate average to emerge.
Truly accurate records = every fill, and with a full year of use. The annual average. All else is a subset. As above, the FUELLY app will do the work for you.
Only the Annual Average MPG matters. (Tank-by-tank always has errors resolved later by the actual average).
One wants to break it out for vacation miles then one also needs to separate travel TO an area from travel WITHIN that area visited. (Fill before arriving at destination campground).
Leave town and fill 50-75/miles out (warm-up complete) and call that the start. Same with last fill being inbound to home 50-75/miles out before hitting metro traffic. That’s the end.
“Vacation miles” need isolation in two ways:
1). Highway towing versus solo day trips.
2). Then, no DD miles included at vacation start or end.
TT towing is an aero problem. Same load in TV at same speed should indicate towing is a 40% penalty at approx 60-MPH. Over 50% and it’s time to investigate mechanical maladjustments from both vehicles brakes, both vehicles alignment, WDH, etc. MPG is a warning flag when it’s off from recorded average (tires are expensive compared to an alignment check or correcting brake drag).
WDH is scale confirmation of settings plus accurate tire pressure as well as loaded TV sans trailer.
The solo test loop is that baseline. Without it one is always in the dark as to what is true. One accurate test, one time, suffices. (TV loaded — simulated based on scale records — as if loaded for a camping trip. Run exclusively on cruise control same speed as when towing; turnaround about 100-miles and back to same pump).
.
Records are for the average over time which is the single accurate method. Each season has weather affecting MPG, and each season has family duties change somewhat. It will take 3-5k miles for that accurate average to emerge.
Truly accurate records = every fill, and with a full year of use. The annual average. All else is a subset. As above, the FUELLY app will do the work for you.
Only the Annual Average MPG matters. (Tank-by-tank always has errors resolved later by the actual average).
One wants to break it out for vacation miles then one also needs to separate travel TO an area from travel WITHIN that area visited. (Fill before arriving at destination campground).
Leave town and fill 50-75/miles out (warm-up complete) and call that the start. Same with last fill being inbound to home 50-75/miles out before hitting metro traffic. That’s the end.
“Vacation miles” need isolation in two ways:
1). Highway towing versus solo day trips.
2). Then, no DD miles included at vacation start or end.
TT towing is an aero problem. Same load in TV at same speed should indicate towing is a 40% penalty at approx 60-MPH. Over 50% and it’s time to investigate mechanical maladjustments from both vehicles brakes, both vehicles alignment, WDH, etc. MPG is a warning flag when it’s off from recorded average (tires are expensive compared to an alignment check or correcting brake drag).
WDH is scale confirmation of settings plus accurate tire pressure as well as loaded TV sans trailer.
The solo test loop is that baseline. Without it one is always in the dark as to what is true. One accurate test, one time, suffices. (TV loaded — simulated based on scale records — as if loaded for a camping trip. Run exclusively on cruise control same speed as when towing; turnaround about 100-miles and back to same pump).
.
