Acura · Known Issues

2021 Acura ILX Problems: 4 Known Issues

2021 model year · 2,450+ owner reports · Updated August 2026

According to Au7o's analysis of 2,450+ owner reports, the 2021 Acura ILX has 4 documented known issues, with 2 rated critical. The most serious are 8-Speed DCT Shudder and Low-Speed Jerking and In-Tank Low-Pressure Fuel Pump Impeller Failure Causing Engine Stall ($0-$0 repair). The most commonly reported issue is 8-Speed DCT Shudder and Low-Speed Jerking with 1,800 owner reports. Across all issues with published estimates, repair costs range from $500 to $1,000. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common Acura ILX problems?

According to Au7o's analysis of 2,450+ owner reports, the 2021 Acura ILX has 4 documented issues. The most frequently reported are: 8-Speed DCT Shudder and Low-Speed Jerking, In-Tank Low-Pressure Fuel Pump Impeller Failure Causing Engine Stall, VTC Actuator Cold-Start Rattle (2.4L K24 Only). Of these, 2 are rated critical and should be addressed promptly.

Is the Acura ILX reliable?

The 2021 Acura ILX has 4 known issues documented across 2,450+ owner reports. 2 issues are rated critical: 8-Speed DCT Shudder and Low-Speed Jerking and In-Tank Low-Pressure Fuel Pump Impeller Failure Causing Engine Stall. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Acura ILX problems?

Repair costs for known Acura ILX issues range from $0 to $1,000, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2016-2022 Acura ILX 8-Speed DCT Shudder and Low-Speed Jerking?

The 2013-2015 ILX 2.4L with the 8-speed dual-clutch transmission (DCT) exhibits severe shudder, jerking, and hesitation during low-speed driving. The clutch packs engage roughly in stop-and-go traffic, and the transmission frequently hunts between gears on slight inclines, making… Severity: high.

What is the 2013-2022 Acura ILX In-Tank Low-Pressure Fuel Pump Impeller Failure Causing Engine Stall?

The Denso-supplied in-tank fuel pump module fitted across virtually the entire ILX production run uses an impeller that was molded with insufficient density and inadequately dried. The impeller absorbs fuel, swells, and interferes with the pump body. The pump then fails to delive… Repairs typically run $0-$0. Severity: high.

What is the 2013-2022 Acura ILX VTC Actuator Cold-Start Rattle (2.4L K24 Only)?

On the 2.4L K24 ILX, the variable timing control (VTC) actuator on the intake camshaft is not fully oil-pressurized at first start. The internal locking pin fails to hold the actuator against the sprocket, so for one to two seconds after a cold start the actuator rattles loudly a… Repairs typically run $500-$1,000. Severity: medium.

What is the 2016-2022 Acura ILX Infotainment System Lag and Unresponsive Touchscreen?

The dual-screen infotainment system in the refreshed ILX suffers from the same lag and responsiveness issues found in other Honda/Acura models using the same platform. The upper screen frequently freezes during navigation, and the lower touchscreen becomes unresponsive to inputs… Severity: low.

2021 Acura ILX Problems: 4 Known Issues

All 4 Known Issues

2016-2022 Acura ILX: 8-Speed DCT Shudder and Low-Speed Jerking#

Common Symptoms

How to Fix

Owner tips & cautions

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2013-2022 Acura ILX: In-Tank Low-Pressure Fuel Pump Impeller Failure Causing Engine Stall#

Common Symptoms

How to Fix

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2013-2022 Acura ILX: VTC Actuator Cold-Start Rattle (2.4L K24 Only)#

Common Symptoms

How to Fix

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2016-2022 Acura ILX: Infotainment System Lag and Unresponsive Touchscreen#

Common Symptoms

How to Fix

Owner tips & cautions

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Other Acura Models

Frequently Asked Questions

What are the most common Acura ILX problems?

Is the Acura ILX reliable?

How much does it cost to fix common Acura ILX problems?

What is the 2016-2022 Acura ILX 8-Speed DCT Shudder and Low-Speed Jerking?

What is the 2013-2022 Acura ILX In-Tank Low-Pressure Fuel Pump Impeller Failure Causing Engine Stall?

What is the 2013-2022 Acura ILX VTC Actuator Cold-Start Rattle (2.4L K24 Only)?

What is the 2016-2022 Acura ILX Infotainment System Lag and Unresponsive Touchscreen?