Is the Lexus RX more reliable than the Mercedes-Benz GLC?

Yes, the RX is clearly more reliable. It has an excellent standing against the GLC's good one, and far fewer recalls. The GLC's costly failures, including cracked pistons, a failing crankcase ventilation valve, and roof glass that shatters, add to its weaker record.

Which has more recalls, the RX or the GLC?

The GLC has many more. Federal recall records show 110 recalls across 8 GLC model years, against 42 across 9 RX model years. GLC complainants also say some recall fixes, such as the communication system update, had not arrived.

What is the most serious GLC problem?

A cracked or broken piston is the most serious. It causes violent shaking or sudden power loss at highway speed with no warning light. One owner was told the engine needed replacing at 52,839 miles, just past the 50,000-mile warranty.

What goes wrong with the Lexus RX most often?

Air bag complaints lead, mainly non-deployment. After that come electrical faults such as sudden power loss with warning lights, and brake actuator noise like honking when the pedal is pressed. Some cars also stalled because of the low-pressure fuel pump recall.

Which model years of the RX and GLC should I avoid?

For the RX, avoid 2019 and 2025, its weakest years. For the GLC, avoid 2020 and 2018. The 2022 model year is among the strongest for both, and it is the last year of the RX's fourth generation and the GLC's first.

Last updated: 2026-10-10

Lexus RX vs Mercedes-Benz GLC: Reliability Compared

More Reliable

Lexus RX

Excellent

Mercedes-Benz GLC

Good

Reliability favors the Lexus RX over the Mercedes-Benz GLC by a wide margin. The GLC has far more federal recalls and costlier failures. Cracked pistons and detaching panoramic roofs weigh against it, while the RX's main concerns are air bag and brake complaints.

How Do the Lexus RX and Mercedes-Benz GLC Generations Compare?

Most used shoppers will land in the final years of each model's long first run. The RX's fourth generation covered the 2016 to 2022 model years, with a facelift for 2019, and a fifth generation began with 2023. The GLC's first generation also covered 2016 to 2022, with a facelift for 2020, and its second generation began with 2023. That puts the GLC's facelift year of 2020 among its weakest years. Newer model years have had less time to collect complaints, so a thin record does not prove they are trouble-free.

Verdict

The Lexus RX is more reliable than the Mercedes-Benz GLC, scoring 86/100 vs 69/100.

Reliability clearly favors the Lexus RX, and the gap is large. Federal recall records show far fewer campaigns for the RX than for the GLC across a similar span of model years. The GLC's worst failures are also the expensive kind: cracked pistons, a roof that detaches, and a crankcase valve fault that blocks emissions tests. Complaint rates per vehicle sold are close, so the RX's lead comes from recall volume and the severity of the GLC's failures.

Key Differences

1Lexus RX has 68 fewer total recalls
2Lexus RX scores 17 points higher in reliability
3Mercedes-Benz GLC has 0.4 fewer complaints per 10k sold

Category Scoreboard

2Lexus RX

—

1Mercedes-Benz GLC

Reliability ScoreTotal RecallsComplaint Rate

Lexus RX vs Mercedes-Benz GLC: Which Is More Reliable?

Lexus RX vs Mercedes-Benz GLC at-a-glance reliability comparison
Metric	Lexus RX	Mercedes-Benz GLC
Reliability Score	86/100	69/100
Years Tracked	9	8
Total Recalls	42	110
Complaints per 10k Sold	7.5	7.1
Year Wins	8	0

What Are the Common Problems With the Lexus RX and Mercedes-Benz GLC?

Air bags are the biggest problem area on the RX, mainly non-deployment, including one injury crash where a seatbelt did not lock. It also has surging and power-loss reports, brake actuator noise, and stalling tied to a fuel pump recall. The GLC's trouble is mechanical and costly: cracked pistons, a failing crankcase ventilation valve, panoramic roof glass that shatters, and electrical fires. Only the RX has crash-linked air bag and brake complaints. Only the GLC has crash-linked steering complaints, where the front wheels skip and knock when turning sharply.

Lexus RX vs Mercedes-Benz GLC common problem areas comparison
Component	Lexus RX	Mercedes-Benz GLC
ELECTRICAL SYSTEM	0.5Very Low	1Very Low
UNKNOWN OR OTHER	0.6Very Low	0.8Very Low
ENGINE	0.2Very Low	0.9Very Low
AIR BAGS	0.8Very Low	0.1Very Low
POWER TRAIN	0.2Very Low	0.4Very Low
STRUCTURE	0.2Very Low	0.3Very Low
FUEL/PROPULSION SYSTEM	0.2Very Low	0.2Very Low
STEERING	—None	0.4Very Low
SERVICE BRAKES	0.2Very Low	0.1Very Low
FUEL SYSTEM	0.1Very Low	0.1Very Low
VEHICLE SPEED CONTROL	0.1Very Low	0.1Very Low
EXTERIOR LIGHTING	—None	0.2Very Low
TIRES	0.1Very Low	—None
VISIBILITY/WIPER	0.1Very Low	—None
SEAT BELTS	—None	0.1Very Low
FORWARD COLLISION AVOIDANCE	—None	0.1Very Low
BACK OVER PREVENTION	—None	0.1Very Low
LANE DEPARTURE	—None	—None
VISIBILITY	—None	—None

Complaints per 10,000 units sold, aggregated across all tracked model years from NHTSA owner reports.

How Does Lexus RX vs Mercedes-Benz GLC Reliability Compare by Year?

Lexus RX vs Mercedes-Benz GLC year-by-year reliability scores
Year	Lexus RX	Mercedes-Benz GLC	Edge
2026	95/1001R / 0C	77/1002R / 3C	Lexus RX
2024	85/1009R / 48C	72/1007R / 20C	Lexus RX
2023	85/1005R / 45C	67/10011R / 57C	Lexus RX
2022	90/1000R / 35C	73/1002R / 51C	Lexus RX
2021	86/1005R / 209C	68/1009R / 55C	Lexus RX
2020	86/1005R / 130C	64/10036R / 143C	Lexus RX
2019	82/1009R / 166C	68/10028R / 119C	Lexus RX
2018	85/1003R / 87C	65/10015R / 95C	Lexus RX

Best years to cross-shop: The 2022 Lexus RX scored 90/100 and the 2022 Mercedes-Benz GLC scored 73/100 — the strongest shared model years that have been on the road for at least two years, where available.

Who Should Buy the Lexus RX vs the Mercedes-Benz GLC?

Pick the RX if you want the lowest risk of a big surprise bill. Its standing is excellent and its recall count is far lower. Target 2022, one of its strongest years, and avoid 2019 and 2025, its weakest. Before you buy, confirm the low-pressure fuel pump recall, campaign 20V012000, was completed, and test the brakes for actuator noise and a soft pedal. Pick the GLC if you want the smaller, more upscale package and accept more risk. Target 2022, one of its strongest years, and skip 2020 and 2018, its weakest. Look hard at any panoramic roof, since reported roof failures fall between about 25,600 and 40,000 miles and owners say out-of-warranty claims were denied. Ask for proof that open recalls were done, and check the engine history for the crankcase ventilation valve, which shows up around 52,880 miles. Buy one with factory warranty left, or budget for repairs that can pass $2,000 for the valve and $10,484 for a roof.

Lexus RX vs Mercedes-Benz GLC: Common Questions

Is the Lexus RX more reliable than the Mercedes-Benz GLC?: Yes, the RX is clearly more reliable. It has an excellent standing against the GLC's good one, and far fewer recalls. The GLC's costly failures, including cracked pistons, a failing crankcase ventilation valve, and roof glass that shatters, add to its weaker record.
Which has more recalls, the RX or the GLC?: The GLC has many more. Federal recall records show 110 recalls across 8 GLC model years, against 42 across 9 RX model years. GLC complainants also say some recall fixes, such as the communication system update, had not arrived.
What is the most serious GLC problem?: A cracked or broken piston is the most serious. It causes violent shaking or sudden power loss at highway speed with no warning light. One owner was told the engine needed replacing at 52,839 miles, just past the 50,000-mile warranty.
What goes wrong with the Lexus RX most often?: Air bag complaints lead, mainly non-deployment. After that come electrical faults such as sudden power loss with warning lights, and brake actuator noise like honking when the pedal is pressed. Some cars also stalled because of the low-pressure fuel pump recall.
Which model years of the RX and GLC should I avoid?: For the RX, avoid 2019 and 2025, its weakest years. For the GLC, avoid 2020 and 2018. The 2022 model year is among the strongest for both, and it is the last year of the RX's fourth generation and the GLC's first.

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How we score the Lexus RX and Mercedes-Benz GLC

Scores weight complaint severity at 35%, repair costs at 30%, recall impact at 20%, and the spread of complaints across systems at 15%, with complaint counts adjusted for US sales. Read the full methodology.

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