Acura RLX — All Years
We have Acura RLX specifications on file for 7 model years, 2014–2020, covering saloon/sedan trims. EPA data lists a single engine, the 3.5L 6-cyl. Combined fuel economy is around 28 mpg (UK). 6 of the 6 rated model years hold an overall 5-star NHTSA rating. Select a year below for full engine, fuel economy, dimensions and safety data.
| Year | Engine(s) | Fuel | MPG (UK) | CO₂ g/km | NHTSA | Recalls | Complaints |
|---|---|---|---|---|---|---|---|
| 2020 | 3.5L 6-cyl | Premium Gasoline | 28–34 | 238 | 5★ | 1 | 2 |
| 2019 | 3.5L 6-cyl | Premium Gasoline | 28–34 | 238 | 5★ | — | — |
| 2018 | 3.5L 6-cyl | Premium Gasoline | 28–34 | 238 | 5★ | 1 | 9 |
| 2017 | 3.5L 6-cyl | Premium Gasoline | 28–35 | 236 | 5★ | 0 | 3 |
| 2016 | 3.5L 6-cyl | Premium Gasoline | 28–36 | 236 | 5★ | 0 | 8 |
| 2015 | 3.5L 6-cyl | Premium Gasoline | 28 | 237 | 5★ | 3 | 11 |
| 2014 | 3.5L 6-cyl | Premium Gasoline | 28–36 | 236 | — | 5 | 85 |
Best and Worst Acura RLX Years: What the NHTSA Data Shows
Across the 6 Acura RLX model years from 2014 to 2020 that have NHTSA data, the typical year has about 8 owner complaints on file. These are the extremes:
Fewest owner complaints
Complaint counts are unverified owner reports to NHTSA and rise with how many cars were sold and how long they have been on the road, so treat them as a pointer for what to inspect, not a reliability score. Model years after 2022 are left out because they have had little time to accumulate reports. Always check a specific car by VIN at nhtsa.gov/recalls.
Engine History
- 3.5L 6-cyl — 2014–2020
Engines are those EPA lists for each model year; the MPG (UK) column shows the range across configurations where more than one exists.
Frequently Asked Questions
What years is the Acura RLX covered on this site?
We have data for 7 model years of the Acura RLX, from 2014 to 2020.
What engines does the Acura RLX come with?
EPA data lists: 3.5L 6-cyl (2014–2020).
Which Acura RLX year has the best fuel economy?
The 2020 model returns the highest combined MPG (UK) on record here, at 28 mpg on its most efficient configuration.
Does the Acura RLX have a 5-star NHTSA safety rating?
Yes — the 2015, 2016, 2017, 2018, 2019, 2020 model years hold an overall 5-star NHTSA rating on record here.
Which Acura RLX model years have the most recalls and complaints?
The 2014 model year has the most NHTSA recall campaigns on record (5), and the 2014 has the most owner complaints (85). NHTSA lists no recalls for 2016–2017. Counts are from NHTSA as of 6 October 2026 and change over time; complaints are unverified owner reports.
What body style is the Acura RLX?
The Acura RLX is classed as a saloon/sedan on this site.
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