Is the Lexus IS more reliable than the Mercedes-Benz A-Class?

Based on our data, the Lexus IS is more reliable with an average score of 82/100 compared to 56/100. That's a significant difference worth considering.

Which has more recalls, the Lexus IS or the Mercedes-Benz A-Class?

The Mercedes-Benz A-Class has more recalls (55) compared to the Lexus IS (6). More recalls don't always mean worse reliability — some are minor — but it's worth reviewing what each recall covers.

Which has fewer owner complaints, the Lexus IS or the Mercedes-Benz A-Class?

Adjusted for sales volume, the Lexus IS has a lower complaint rate at 0.7 per 10,000 vehicles sold versus 30.2 for the Mercedes-Benz A-Class. Normalizing by sales gives a fairer comparison than raw totals.

Last updated: 2026-05-15

Lexus IS vs Mercedes-Benz A-Class: Reliability Compared

More Reliable

Lexus IS

Excellent

Mercedes-Benz A-Class

Mixed

Choosing between the Lexus IS and the Mercedes-Benz A-Class? This page compares their reliability scores, NHTSA recall history, owner-reported complaints, and estimated annual repair costs so you can make a confident long-term ownership decision between these two midsize sedans.

Our reliability scores are based on NHTSA recall and complaint data, independent repair cost estimates, and sales-normalized complaint rates. The Lexus IS currently leads with an average score of 82/100 compared to 56/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.

How Do the Lexus IS and Mercedes-Benz A-Class Generations Compare?

As of 2026, the Lexus IS is in its third generation (XE30), which began in 2014 and saw its most recent facelift in 2020. This platform is well into its lifecycle, and by now, any initial teething issues common in newer platforms have likely been addressed, generally leading to improved reliability. In contrast, the Mercedes-Benz A-Class is currently in its fourth generation (W177), which started in 2019. This platform is still relatively new, potentially making it more susceptible to early-generation reliability issues, although initial problems might have been mitigated by the time of its 2023 conclusion. Buyers seeking a more mature and potentially reliable option may favor the Lexus IS.

Verdict

The Lexus IS is more reliable than the Mercedes-Benz A-Class, scoring 82/100 vs 56/100.

The Lexus IS outperforms the Mercedes-Benz A-Class in terms of reliability, with an average reliability score of 82 compared to the A-Class's 56. The Lexus IS has experienced significantly fewer recalls, with only 6 over nine years, versus the A-Class's 55 in seven years. Furthermore, the Lexus has a much lower owner complaint rate, with just 0.7 per 10,000 sold, compared to the A-Class's 30.2. These data points highlight the Lexus IS as the more reliable choice, particularly given the A-Class's frequent issues with its electrical system and power train.

Key Differences

1Lexus IS has 49 fewer total recalls
2Lexus IS has 29.5 fewer complaints per 10k sold
3Lexus IS scores 26 points higher in reliability

Category Scoreboard

3Lexus IS

—

0Mercedes-Benz A-Class

Reliability ScoreTotal RecallsComplaint Rate

Lexus IS vs Mercedes-Benz A-Class: Which Is More Reliable?

Lexus IS vs Mercedes-Benz A-Class at-a-glance reliability comparison
Metric	Lexus IS	Mercedes-Benz A-Class
Reliability Score	82/100	56/100
Years Tracked	9	7
Total Recalls	6	55
Complaints per 10k Sold	0.7	30.2
Year Wins	6	0

What Are the Common Problems With the Lexus IS and Mercedes-Benz A-Class?

The Lexus IS exhibits a relatively low number of total complaints, with issues primarily in the "Unknown or Other," "Tires," and "Structure" categories, and only one crash-linked incident related to tires. In contrast, the Mercedes-Benz A-Class has a significantly higher complaint volume, with notable concerns in the "Electrical System," "Unknown or Other," and "Power Train" categories, including multiple crash-linked incidents—five associated with the electrical system and two with the power train. The A-Class also faces additional challenges in "Steering," "Service Brakes," and "Air Bags," each with crash-linked complaints, indicating a broader scope of reliability issues, particularly in safety-related components. The Lexus IS's problem profile is less severe and less safety-critical compared to the more extensive and safety-impacting issues observed in the Mercedes-Benz A-Class.

Lexus IS vs Mercedes-Benz A-Class common problem areas comparison
Component	Lexus IS	Mercedes-Benz A-Class
ELECTRICAL SYSTEM	—None	7.2Above Avg
UNKNOWN OR OTHER	—None	4.8Average
POWER TRAIN	—None	3.5Average
STEERING	—None	1.9Low
SERVICE BRAKES	—None	1.4Low
ENGINE	—None	1.4Low
AIR BAGS	—None	1.2Low
FUEL SYSTEM	—None	1Very Low
VEHICLE SPEED CONTROL	—None	0.8Very Low
TIRES	—None	0.6Very Low
EXTERIOR LIGHTING	—None	0.6Very Low
FUEL/PROPULSION SYSTEM	—None	0.6Very Low
VISIBILITY	—None	0.4Very Low
SEATS	—None	0.4Very Low
SUSPENSION	—None	0.4Very Low
WHEELS	—None	0.4Very Low
STRUCTURE	—None	—None

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

How Does Lexus IS vs Mercedes-Benz A-Class Reliability Compare by Year?

Lexus IS vs Mercedes-Benz A-Class year-by-year reliability scores
Year	Lexus IS	Mercedes-Benz A-Class	Edge
2024	83/1000R / 3C	50/1007R / 21C	Lexus IS
2022	83/1000R / 13C	65/1001R / 2C	Lexus IS
2021	83/1000R / 1C	58/10015R / 11C	Lexus IS
2020	83/1000R / 3C	59/1009R / 18C	Lexus IS
2019	79/1004R / 8C	55/10013R / 42C	Lexus IS
2018	81/1002R / 6C	48/10010R / 52C	Lexus IS
2026(predicted)	83/100(predicted)	58/100(predicted)	Lexus IS

Best years to cross-shop: The 2024 Lexus IS scored 83/100 and the 2022 Mercedes-Benz A-Class scored 65/100 — these represent the strongest model years in our tracking range.

Who Should Buy the Lexus IS vs the Mercedes-Benz A-Class?

If you prioritize reliability and peace of mind, the Lexus IS is your best bet. With a reliability score of 82/100, it stands out for its dependability. It has only 6 recalls and a notably low owner complaint rate of 0.7 per 10,000 sold, suggesting fewer headaches down the road. Although specific repair costs aren't available, the data shows that Lexus tends to be a robust choice with fewer reported issues in critical areas like tires and structure. On the other hand, if you are drawn to the prestige and features of a Mercedes-Benz, be prepared for potential challenges with the A-Class. Its reliability score of 56/100 and significant total recalls of 55 indicate more frequent trips to the service center. With 30.2 owner complaints per 10,000 sold, issues in the electrical system and power train are prevalent. This model may appeal to those who value luxury and brand identity over long-term reliability.

Lexus IS vs Mercedes-Benz A-Class: Common Questions

Is the Lexus IS more reliable than the Mercedes-Benz A-Class?: Based on our data, the Lexus IS is more reliable with an average score of 82/100 compared to 56/100. That's a significant difference worth considering.
Which has more recalls, the Lexus IS or the Mercedes-Benz A-Class?: The Mercedes-Benz A-Class has more recalls (55) compared to the Lexus IS (6). More recalls don't always mean worse reliability — some are minor — but it's worth reviewing what each recall covers.
Which has fewer owner complaints, the Lexus IS or the Mercedes-Benz A-Class?: Adjusted for sales volume, the Lexus IS has a lower complaint rate at 0.7 per 10,000 vehicles sold versus 30.2 for the Mercedes-Benz A-Class. Normalizing by sales gives a fairer comparison than raw totals.

More Lexus IS comparisons

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More Mercedes-Benz A-Class comparisons

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How We Calculate Reliability Scores

Auto Reliability Index scores are calculated on a 0–100 scale using a weighted formula that combines multiple public data sources. Each factor is weighted based on its predictive value for real-world ownership experience.

Key Ranking Factors

Complaint Severity

NHTSA owner complaints weighted by component category (e.g., powertrain, safety systems, electronics, cosmetic) — safety-critical issues carry more weight than cosmetic ones. Adjusted for sales volume so high-volume models aren't unfairly penalized.

Repair Costs

Independent reliability ratings based on repair frequency, average repair costs, and severity of typical repairs for each model.

Recall Impact

Number of NHTSA recalls weighted by severity. “Stop driving” and fire-risk recalls are penalized more heavily than minor software or labeling recalls.

Issue Diversity

Measures how many major vehicle systems (engine, transmission, electrical, braking, etc.) have recorded complaints. A vehicle with issues spread across many systems may indicate systemic quality issues.

Scores are grouped into four tiers:

80–100: Excellent— Top-tier reliability, minimal issues
60–79: Good— Reliable with some minor concerns
40–59: Mixed— Notable issues, research before buying
0–39: Risky— Significant problems, proceed with caution

Data is sourced from NHTSA recall records, owner complaint filings, and independent repair databases. Scores are recalculated as new data becomes available. While the weighting model is proprietary, all underlying data sources are public and traceable.

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