CARFOCAL

2021 Acura RDX Report

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

Updated May 30, 2026Ethan Miller2 Critical Recalls
2021 Acura RDX Report

Overall Score

Our Verdict
Proceed with caution

Key Takeaways

  • The 2021 RDX is rated below average for reliability, with significant concerns around engine performance and safety systems.
  • Owners report issues such as engine power loss, brake problems, and airbag system faults.
  • A critical recall addresses the front passenger seat weight sensor, impacting airbag functionality.
  • The driveshaft recall also warrants attention; confirm remedy completion.
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Overview

2021 Acura RDX

The 2021 Acura RDX offers a premium compact SUV experience, blending sporty handling with a refined interior. Under the hood, a 2.0-liter turbocharged four-cylinder engine paired with a 10-speed automatic transmission provides brisk acceleration. All-wheel drive is available, enhancing its all-weather capability. While it boasts a top NHTSA safety rating of 5 stars overall, potential buyers should be aware of its below-average reliability verdict. With 5 recalls and 135 complaints logged, specific attention should be paid to engine and airbag system concerns. The RDX delivers a comfortable ride and a well-appointed cabin, making it an attractive option if potential issues are thoroughly inspected.

Critical Failure Risk

Reports indicate engine power loss or limp mode events, particularly during acceleration or in adverse weather. This can stem from issues with the fuel system, ignition, or engine control module.

Early detection can help you avoid a $500-$1,500 repair.

Open Maintenance Analysis →

Reliability

Practicality

The score is mainly limited by high fuel consumption.

Buyer Fit

Who This Car Is For

Best for

Buyers seeking a premium compact SUV with sporty driving dynamics.

+3 more buyer-fit notes in the full report

Avoid if

Buyers prioritizing bulletproof reliability above all else.

+3 more buyer-fit warnings in the full report

2021 Acura RDX Reliability Analysis

Explore comprehensive reliability data including official safety recalls, consumer complaints, and common mechanical failures for the 2021 Acura RDX.

Specs

Vehicle Specs

Fuel Type
Premium
Seating Capacity
5
Transmission
Automatic (S10)
Drivetrain
All-Wheel Drive
Body Style
Suv
EPA Combined MPG
23

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Most Common Issues

1. ENGINE

Most reported

Usage: 18 reports

2. Braking System

Usage: 13 reports

See all common issues in the maintenance guide

First Service Interval

- Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation - Brake Inspection - Fluid Level Check (Coolant, Brake, Washer)

Est. shop cost: $150 - $250

7,500 mi

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

Full pre-purchase inspection checklist
Complete maintenance schedule (4 service intervals)
Repair forecasts with mileage and cost context
Full buyer-fit guidance and who should avoid it
Full specs and trim-level context
5 recall campaign details & remedy notes
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FAQ

FAQ

Is the 2021 Acura RDX reliable?

The CarFocal Reliability Score for the 2021 Acura RDX is 6.2/10. Reliability score is 6.2/10. NHTSA recalls: 5. Owner complaints: 135.

How practical is the 2021 Acura RDX for daily use?

Practicality score is 4.2/10. The score is mainly limited by high fuel consumption. EPA combined economy is 23 MPG. Seating capacity is 5.

What is the overall score for the 2021 Acura RDX?

The CarFocal Overall Score for the 2021 Acura RDX is 6.9/10. Overall score is 6.9/10 (Good). Confidence 85%. Maintenance 8.7/10. Practicality 4.2/10.

What does it cost to own and maintain a 2021 Acura RDX?

Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation - Brake Inspection - Fluid Level Check (Coolant, Brake, Washer) at 7,500 miles. Estimated first-year maintenance: $400 - $700. Repair prediction highlight: Engine Power Loss Issues (typical at 45,000 miles, estimated cost Min: $500 • Max: $1,500).

What is the MSRP range for the 2021 Acura RDX?

Base MSRP is $43,300.

What engine is in the 2021 Acura RDX?

Engine specs list 4 • 2.0.

What transmission does the 2021 Acura RDX use?

According to CarFocal's specs for the 2021 Acura RDX, transmission is Automatic (S10). The paired drivetrain is All-Wheel Drive.

Does the 2021 RDX require Premium gas?

Manufacturer fuel recommendation: Premium.

What is the combined EPA MPG for the 2021 Acura RDX?

EPA combined estimate is 23 MPG.

What driver assistance and safety features are available on the 2021 Acura RDX?

13 standard and 1 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.

How many people fit in a 2021 Acura RDX?

According to CarFocal's specs for the 2021 Acura RDX, seating capacity is 5.

What body style is the 2021 Acura RDX?

According to CarFocal's specs for the 2021 Acura RDX, body style is suv.

What drivetrain does the 2021 Acura RDX use?

According to CarFocal's specs for the 2021 Acura RDX, drivetrain is All-Wheel Drive. Transmission is Automatic (S10).

What are the NHTSA safety ratings for the 2021 Acura RDX?

NHTSA ratings: Overall 5/5 • Frontal 4/5 • Side 5/5 • Rollover 4/5.

What are the most common engine problems on the 2021 Acura RDX?

Top complaint category: engine (18 reports, 13.3% of complaints).

Are there open safety recalls on the 2021 Acura RDX?

This model year has 5 official safety campaigns listed.

Should buyers consider alternatives to the 2021 Acura RDX?

Alternatives listed in this guide: 2021 Lexus NX and 2021 BMW X3.