Will It Go 500 Miles on a Tank? - 2015 Acura TLX SH-AWD Long-Term Road Test

2015 Acura TLX SH-AWD Long-Term Road Test

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2015 Acura TLX: Will It Go 500 Miles on a Tank?

by Mike Schmidt, Vehicle Testing Manager on March 9, 2016

2015 Acura TLX

February 2016 was scheduled to be our last full month with the 2015 Acura TLX. We figured on one last long distance cruise to see if it had anything to show us that we hadn't seen in the past 11 months.

There was a little something, as it turned out.

We covered 1,800 miles with the TLX in February, which is about average. But 860 of those miles were in the last week of the month, including nearly 600 in one day (road trip details to follow). It was on the long day trip that we set a new single-tank range record.

Previously the Acura traveled 470.7 on one fill-up. Goaded by a distance-to-empty meter that routinely teased upwards of 560 miles, I took the challenge to beat it. I set the cruise to 70 mph, fired up my tunes and set out.

A series of setbacks nearly spoiled my attempt. Road construction shrunk the highway to one lane for a two-mile section. A multi-car accident did the same about an hour later. And it was three hours into the drive before I realized Sport mode was still engaged, left on by the previous driver. Sport mode increases engine rpm and was obviously not what I wanted.

The Sport mode oversight was, I think, the reason I fell short of the mystical 500-mile mark. With Interstate 15's Cajon Pass looming just ahead of me, I chickened out. I settled for 486.1 with 18 miles teasing me from the DTE meter.

My average during this leg was 32.2 mpg, higher than EPA estimates but not our best. Still, it was enough to help raise our overall fuel economy by one-tenth, to 24.5 mpg.

Worst Fill MPG: 14.6
Best Fill MPG: 33.7
Average Lifetime MPG: 24.5
EPA MPG Rating: 25 Combined (21 City/31 Highway)
Best Range: 486.1
Current Odometer: 19,361

Mike Schmidt, Vehicle Testing Manager @ 19,361 miles

  • Full Review
  • Pricing & Specs
  • Road Tests (1)
  • Comparison
  • Long-Term

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