What are the most common problems with the 2018 Acura RLX?

The primary mechanical concern is **engine failure** due to connecting rod bearing issues, a known problem in related V6 engines.

How many recalls does the 2018 Acura RLX have?

The 2018 Acura RLX currently has 34 recalls on file. Review the full recall report to see affected components and available remedies.

Is the 2018 Acura RLX a good buy used?

Verdict: Proceed with caution. The primary mechanical concern is **engine failure** due to connecting rod bearing issues, a known problem in related V6 engines. A substantial **34 recalls** exist, with a critical focus on the **fuel pump module**, necessitating verification of completion. Despite a low complaint count, the severity of engine and fuel system issues warrants careful pre-purchase inspection. Fuel economy is respectable for its class, but potential repair costs associated with engine issues should be factored into ownership. The RLX's luxury appointments and comfortable ride are positives, but mechanical diligence is paramount for used buyers. Always verify service history, open recalls, and maintenance records before purchasing.

What maintenance costs should I expect for the 2018 Acura RLX?

Refer to the maintenance cost guide for interval schedules, DIY difficulty ratings, and typical repair cost ranges for the 2018 Acura RLX.

2018 Acura RLX Report

Known issues, recalls, running costs, and what to check before you buy.

Updated May 30, 2026Ryan Davis34 Critical Recalls

Overall Score

Our Verdict

Proceed with caution

Key Takeaways

The primary mechanical concern is engine failure due to connecting rod bearing issues, a known problem in related V6 engines.
A substantial 34 recalls exist, with a critical focus on the fuel pump module, necessitating verification of completion.
Despite a low complaint count, the severity of engine and fuel system issues warrants careful pre-purchase inspection.
Fuel economy is respectable for its class, but potential repair costs associated with engine issues should be factored into ownership.

See the 5 checks before you buyFree • Takes 20s • Saves Thousands $

Overview

2018 Acura RLX

The 2018 Acura RLX offers a comfortable and refined driving experience, but used car shoppers should be aware of its reliability record. With an 'Average' public reliability verdict, this luxury sedan presents potential ownership risks, particularly concerning its powertrain. A significant number of recalls, primarily related to the fuel pump, suggest potential repair costs. However, the low complaint volume means individual experiences may vary.

Critical Failure Risk

Customer complaints indicate potential connecting rod bearing wear, a serious issue that can lead to catastrophic engine failure. This is a critical concern that may manifest at higher mileage.

Early detection can help you avoid a $4,000-$7,000 repair.

Open Maintenance Analysis →

Safety & Bulletins

Open Recalls34

Service Bulletins0

Full Recall History →

Owner Complaints

Engine1

Detailed Issue Breakdown →

Performance & Efficiency

Horsepower: 310HP
Torque: 272 lb–ftLB-FT

Fuel Efficiency

Combined

MPG

City

MPG

Highway

MPG

Full Vehicle Specifications ↓

Reliability

Practicality

The score is mainly limited by high fuel consumption, and small boot.

Buyer Fit

Who This Car Is For

Best for

Discerning buyers seeking a comfortable, well-appointed luxury sedan who are willing to conduct rigorous pre-purchase inspections and understand the potential for mechanical issues.

+1 more buyer-fit notes in the full report

Avoid if

Buyers prioritizing bulletproof reliability or those unwilling to invest in thorough mechanical inspections.

+1 more buyer-fit warnings in the full report

2018 Acura RLX Reliability Analysis

Specs

Vehicle Specs

Fuel Type: Premium
Seating Capacity: 5
Horsepower: 310 hp
Torque: 272 lb-ft
Transmission: Automatic (S10)
Drivetrain: Front-Wheel Drive
Body Style: Sedan
MSRP Range: $54,900 - $61,900
EPA Combined MPG: 23

CarFocal account required

See the full 2018 Acura RLX buyer report before you decide

Unlock the complete checklist, maintenance outlook, and buyer verdict in one place.

Most Common Issues

1. ENGINE

Most reported

Usage: 1 reports

2. Fuel System

Usage: 1 reports

See all common issues in the maintenance guide

First Service Interval

- Oil Change (5W-30 Synthetic) (Parts: Synthetic Engine Oil, Oil Filter)

Est. shop cost: $75 - $150

7,500 mi

Unlock the full maintenance guide for every scheduled service interval and cost forecast.

Full pre-purchase inspection checklist

Complete maintenance schedule (5 service intervals)

Repair forecasts with mileage and cost context

Full buyer-fit guidance and who should avoid it

Full specs and trim-level context

34 recall campaign details & remedy notes

Create free account

Free • Takes 20 seconds • Saves Thousands $

Already have an account? Log in

FAQ

Is the 2018 Acura RLX reliable?

The CarFocal Reliability Score for the 2018 Acura RLX is 6.3/10. Reliability score is 6.3/10. NHTSA recalls: 34. Owner complaints: 3.

How practical is the 2018 Acura RLX for daily use?

Practicality score is 4.7/10. The score is mainly limited by high fuel consumption, and small boot. EPA combined economy is 23 MPG. Seating capacity is 5. 4 passenger doors are listed. Boot capacity is 339 litres.

What is the overall score for the 2018 Acura RLX?

The CarFocal Overall Score for the 2018 Acura RLX is 6.0/10. Overall score is 6.0/10 (Mixed). Confidence 55%. Maintenance 7.1/10. Tuning 2.0/10. Practicality 4.7/10.

What does it cost to own and maintain a 2018 Acura RLX?

Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: Synthetic Engine Oil, Oil Filter) at 7,500 miles. Estimated first-year maintenance: $1,000 - $1,500. Repair prediction highlight: Engine (typical at 92,000 miles, estimated cost Min: $4,000 • Max: $7,000).

What is the MSRP range for the 2018 Acura RLX?

MSRP range is $54,900 - $61,900.

What engine is in the 2018 Acura RLX?

Engine specs list V6 • 6 • 3.5. Output is 310 hp • 272 lb-ft.

What transmission does the 2018 Acura RLX use?

According to CarFocal's specs for the 2018 Acura RLX, transmission is Automatic (S10). The paired drivetrain is Front-Wheel Drive.

Does the 2018 RLX require Premium gas?

Manufacturer fuel recommendation: Premium.

What is the combined EPA MPG for the 2018 Acura RLX?

EPA combined estimate is 23 MPG.

What driver assistance and safety features are available on the 2018 Acura RLX?

12 standard driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.

What is the fuel economy range for the 2018 Acura RLX?

According to CarFocal's specs for the 2018 Acura RLX, fuel economy range is 20-23 mpg combined.

How many people fit in a 2018 Acura RLX?

According to CarFocal's specs for the 2018 Acura RLX, seating capacity is 5.

What body style is the 2018 Acura RLX?

According to CarFocal's specs for the 2018 Acura RLX, body style is sedan.

What drivetrain does the 2018 Acura RLX use?

According to CarFocal's specs for the 2018 Acura RLX, drivetrain is Front-Wheel Drive. Transmission is Automatic (S10).

Is the 2018 Acura RLX good for tuning?

Tuning potential is rated 2/10. The 2018 Acura RLX is a luxury sedan prioritizing comfort and refinement. Its tuning potential is severely limited due to a lack of aftermar...

Should I tune the 2018 Acura RLX?

The Acura RLX is a luxury sedan with a focus on comfort and reliability rather than performance. It has limited aftermarket support and its engine is not designed for significant tuning. While some aesthetic modifications are possible, the core mechanicals are not conducive to performance tuning.

What are the most common engine problems on the 2018 Acura RLX?

Top complaint category: engine (1 reports, 33.3% of complaints).

Are there open safety recalls on the 2018 Acura RLX?

This model year has 34 official safety campaigns listed.