2018-2025 Lexus LC Problems: 2 Issues Every Owner Should Know

2018-2025 Lexus LC Problems: 2 Issues Every Owner Should Know | Au7o

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Community Reported

1,200 owners

On the 2018-2023 Lexus LC, the LC flagship coupe shares the same frustrating Remote Touch Interface touchpad and laggy infotainment as other Lexus models. On a $100,000+ vehicle, the slow response times and imprecise touchpad control are a particularly sharp contrast to the otherwise exceptional driving experience. The system is widely criticized in professional reviews.

This issue also affects: Infiniti Q50, Lexus IS, Lexus RC

Common Symptoms

Multi-second input lag on touchpad
Cursor overshoots targets requiring multiple corrections
System freezes during navigation
Slow Bluetooth audio streaming startup

How to Fix

Update to the latest infotainment software version. The 2022+ LC received a touchscreen update that significantly improves usability. For pre-2022 models, use Apple CarPlay (added 2020) or voice commands to minimize touchpad interaction.

What Owners Are Using

Parts and tips from 1,200+ owners who fixed this issue

TipThe 2022 infotainment update with touchscreen capability is available as a retrofit for 2018-2021 LC models at the dealer. It is a significant improvement worth the investment.

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1,200+ owners have reported this issue

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Community Reported

High Confidence1,200 reportsLast reported by owners Dec 2025Reviewed Mar 2026

Community Reported

800 owners

On the 2018-2025 Lexus LC, the LC500 V8 produces a prominent exhaust drone in the 1,800-2,200 RPM range, which corresponds to 65-80 MPH highway cruising in the 10-speed automatic. The drone is a resonance issue where exhaust frequency coincides with cabin structural resonance, creating a low-frequency hum that becomes fatiguing on long highway drives.

This issue also affects: Land Rover Discovery, Mercedes-Benz G-Class, Mercedes-Benz SL-Class

Common Symptoms

Low-frequency humming at highway cruising speeds
Drone occurs specifically at 1,800-2,200 RPM
Noise reduces in Sport mode at higher RPM
Fatiguing cabin resonance on long drives

How to Fix

Install aftermarket exhaust resonators or a Helmholtz resonator to cancel the drone frequency. Some owners have had success with Dynamat sound deadening material applied to the trunk floor and rear firewall. Switching to Sport mode forces lower gears and higher RPM that avoids the drone window.

What Owners Are Using

Parts and tips from 800+ owners who fixed this issue

TipAdding Dynamat Xtreme to the trunk floor and wheel wells significantly reduces the drone. Two boxes cover the key areas and the difference is immediate.

Typical repair cost:$200 - $1,500

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800+ owners have reported this issue

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Community Reported

Medium Confidence800 reportsLast reported by owners Jan 2026Reviewed Mar 2026

Frequently Asked Questions

What are the most common Lexus LC problems?

According to Au7o's analysis of 2,000+ owner reports, the 2018-2025 Lexus LC has 2 documented issues. The most frequently reported are: Infotainment System Lag and Touchpad Issues, Exhaust Drone at Highway Cruising RPM. None are rated critical, but regular maintenance is recommended.

Is the Lexus LC reliable?

The 2018-2025 Lexus LC has 2 known issues documented across 2,000+ owner reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Lexus LC problems?

Repair costs for known Lexus LC issues range from $200 to $1,500, 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 year Lexus LC is the most reliable?

Reliability varies across model years of the Lexus LC. Based on owner reports, issues are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2018-2025 Lexus LC with 2 documented issues from 2,000+ owner reports.

What is the 2018-2023 Lexus LC Infotainment System Lag and Touchpad Issues?

The LC flagship coupe shares the same frustrating Remote Touch Interface touchpad and laggy infotainment as other Lexus models. On a $100,000+ vehicle, the slow response times and imprecise touchpad control are a particularly sharp contrast to the otherwise exceptional driving ex… Severity: low.

What is the 2018-2025 Lexus LC Exhaust Drone at Highway Cruising RPM?

The LC500 V8 produces a prominent exhaust drone in the 1,800-2,200 RPM range, which corresponds to 65-80 MPH highway cruising in the 10-speed automatic. The drone is a resonance issue where exhaust frequency coincides with cabin structural resonance, creating a low-frequency hum… Repairs typically run $200-$1,500. Severity: low.

2018-2025 Lexus LC Problems: 2 Issues Every Owner Should Know

All 2 Known Issues

2018-2023 Lexus LC: Infotainment System Lag and Touchpad Issues#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

2018-2025 Lexus LC: Exhaust Drone at Highway Cruising RPM#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

Other Lexus Models

Frequently Asked Questions

What are the most common Lexus LC problems?

Is the Lexus LC reliable?

How much does it cost to fix common Lexus LC problems?

What year Lexus LC is the most reliable?

What is the 2018-2023 Lexus LC Infotainment System Lag and Touchpad Issues?

What is the 2018-2025 Lexus LC Exhaust Drone at Highway Cruising RPM?