Against 416 other V6 cars rated 2017–2019, the XTS sits right on their 21.7 mpg average.
Every Cadillac XTS engine, compared
The Cadillac XTS was rated in a single specification, so its gas mileage does not vary by version — only by model year. Yearly cost assumes 12,000 miles at $3.20 a gallon.
| Engine | Combined | City / Highway | Years | Fuel per year |
|---|---|---|---|---|
| 3.6L 6-cyl | 18.1 / 27.9 | 2013–2019 | $1,794 |
What that actually costs
Against its rivals in the same model years, the Dodge Charger gets 21 mpg, the Chrysler 300 21 mpg and the Hyundai Sonata 38.5 mpg, next to 22 mpg for the 2019 XTS.
| Measure | Value |
|---|---|
| Cost per mile (2019) | $0.145 |
| Fuel per year | $1,745 |
| Fuel over five years | $8,725 |
| Against other V6 cars, 2017–2019 | −$25 a year |
| EPA's own estimate | $2,907 a year |
City or highway — who is this car for
The 2019 Cadillac XTS gives up 9 mpg in town: 28 on the highway against 19 in the city, $650 a year if every mile were city driving.
| Measure | Value | Reading |
|---|---|---|
| City (2019) | 19 mpg | $2,021 a year if you only drive in town |
| Highway | 28 mpg | $1,371 a year if you mostly commute |
| Gap | +9 mpg (47%) | Wide — this car dislikes traffic |
How the XTS changed over the years
The XTS peaked in 2019 at 22 mpg (19 city, 28 highway) and was at its thirstiest in 2016 at 21 — 1 mpg apart, or $84 a year in fuel between buying one year and the other.
| Model year | Combined | City / Highway | Engines offered | Fuel per year |
|---|---|---|---|---|
| 2019 | 19 / 28 | 1 | $1,745 | |
| 2018 | 19 / 28 | 1 | $1,745 | |
| 2017 | 18 / 28 | 1 | $1,745 | |
| 2016 | 18 / 28 | 1 | $1,829 | |
| 2015 | 18 / 28 | 1 | $1,829 | |
| 2014 | 18 / 28 | 1 | $1,829 | |
| 2013 | 17 / 27 | 1 | $1,829 |
MPG is a number. Dollars per year is the answer.
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How we count
This page rests on 7 EPA ratings of the Cadillac XTS — 1 engine across 2013–2019. The mileage is EPA's laboratory figure, unchanged; the yearly bill is ours, at 12,000 miles and $3.20 a gallon, against EPA's own estimate of $2,907. Full method.
Frequently asked questions
What mpg does the 2019 Cadillac XTS get?
22 mpg combined, 19 city and 28 highway, per EPA. Across every year since 2013 the XTS has averaged 21.4 mpg.
Is the 2019 XTS more efficient than the 2018?
About the same: 22 against 22 mpg combined.
Which XTS year has the best gas mileage?
The 2019, at 22 mpg combined (19 city, 28 highway), which is also the latest model year we hold.
Does the XTS get better gas mileage than the Dodge Charger?
Yes: 22 mpg for the 2019 XTS against 21 for the 2020 Dodge Charger, about $84 a year less to run.
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