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

Based on our data, the Lexus IS is more reliable with an average score of 82/100 compared to 58/100. That's a significant difference worth considering.

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

The Mercedes-Benz E-Class has more recalls (184) 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 E-Class?

Adjusted for sales volume, the Lexus IS has a lower complaint rate at 0.7 per 10,000 sold versus 7 for the Mercedes-Benz E-Class. This per-sales normalization gives a fairer comparison than raw totals.

Last updated: 2026-03-04

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

More Reliable

Lexus IS

Excellent

Mercedes-Benz E-Class

Mixed

Choosing between the Lexus IS and the Mercedes-Benz E-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 58/100. Scroll down for the full year-by-year breakdown, common problem areas, and repair cost comparison.

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

As of 2026, the Mercedes-Benz E-Class is in its sixth generation (W214), introduced in 2023. Being early in its lifecycle, it may still be ironing out early production issues typical of new platforms. In contrast, the Lexus IS remains in its third generation (XE30), which debuted in 2014 and received a significant facelift in 2020. This mature platform has had time to address earlier reliability concerns, potentially offering a more refined and dependable experience. Buyers often find that vehicles later in their generation cycle, like the current Lexus IS, benefit from improved reliability as manufacturers refine and resolve initial design and engineering challenges.

Verdict

The Lexus IS is more reliable than the Mercedes-Benz E-Class, scoring 82/100 vs 58/100.

The Lexus IS outshines the Mercedes-Benz E-Class in reliability, with a significantly higher average reliability score of 82/100 compared to the E-Class's 58/100. The Lexus IS also has a remarkable recall history with only 6 recalls over 9 years, while the E-Class has experienced 184 recalls in 8 years. Furthermore, owner complaints per 10,000 sold are substantially lower for the Lexus IS at 0.7, compared to 7 for the E-Class. Key issue areas for the E-Class include the electrical system and powertrain, whereas the Lexus IS primarily deals with structural concerns, making the Lexus IS a more dependable choice in the midsize sedan segment.

Key Differences

1Lexus IS has 178 fewer total recalls
2Lexus IS scores 24 points higher in reliability
3Lexus IS has 6.3 fewer complaints per 10k sold

Category Scoreboard

3Lexus IS

—

0Mercedes-Benz E-Class

Reliability ScoreTotal RecallsComplaint Rate

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

Lexus IS vs Mercedes-Benz E-Class at-a-glance reliability comparison
Metric	Lexus IS	Mercedes-Benz E-Class
Reliability Score	82/100	58/100
Years Tracked	9	8
Total Recalls	6	184
Complaints per 10k Sold	0.7	7
Year Wins	7	0

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

The Mercedes-Benz E-Class exhibits a broader range of problem categories compared to the Lexus IS, with significant issues in the electrical system, which has 36 complaints including 3 linked to crashes. Additionally, the E-Class has notable complaints in the engine and power train categories, suggesting potential reliability concerns in these critical areas. In contrast, the Lexus IS has a substantially lower total complaint count, with only 44 issues reported, primarily in structure and tires, with just one tire-related complaint linked to a crash. The E-Class's diverse problem profile, particularly those with crash implications, indicates more complex reliability challenges than the relatively minor concerns seen in the Lexus IS.

Lexus IS vs Mercedes-Benz E-Class common problem areas comparison
Component	Lexus IS	Mercedes-Benz E-Class
ELECTRICAL SYSTEM	—None	0.5Very Low
UNKNOWN OR OTHER	—None	0.4Very Low
ENGINE	—None	0.3Very Low
POWER TRAIN	—None	0.3Very Low
STEERING	—None	0.2Very Low
SEAT BELTS	—None	0.2Very Low
TIRES	—None	0.1Very Low
STRUCTURE	—None	0.1Very Low
BACK OVER PREVENTION	—None	0.1Very Low
WHEELS	—None	0.1Very Low
AIR BAGS	—None	0.1Very Low
FUEL SYSTEM	—None	—None
FUEL/PROPULSION SYSTEM	—None	—None
SERVICE BRAKES	—None	—None
VEHICLE SPEED CONTROL	—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 E-Class Reliability Compare by Year?

Lexus IS vs Mercedes-Benz E-Class year-by-year reliability scores
Year	Lexus IS	Mercedes-Benz E-Class	Edge
2024	83/1000R / 3C	63/1001R / 7C	Lexus IS
2023	83/1000R / 9C	63/1005R / 20C	Lexus IS
2022	83/1000R / 13C	60/1008R / 19C	Lexus IS
2021	83/1000R / 1C	56/10030R / 36C	Lexus IS
2020	83/1000R / 3C	56/10026R / 35C	Lexus IS
2019	79/1004R / 8C	54/10042R / 100C	Lexus IS
2018	81/1002R / 6C	55/10072R / 252C	Lexus IS
2026(predicted)	83/100(predicted)	62/100(predicted)	Lexus IS

Best years to cross-shop: The 2024 Lexus IS scored 83/100 and the 2024 Mercedes-Benz E-Class scored 63/100 — these represent the strongest model years in our tracking range.

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

If you prioritize reliability and peace of mind, the Lexus IS is an excellent choice. With a reliability score of 82/100, just six recalls, and a mere 0.7 owner complaints per 10,000 sold, it stands out as a dependable option. You'll benefit from fewer trips to the mechanic and potentially lower unexpected repair costs. This model is ideal if you value long-term reliability and want to minimize maintenance headaches. On the other hand, the Mercedes-Benz E-Class might appeal to you if you desire a more luxurious driving experience and are willing to accept a trade-off in reliability. With a lower reliability score of 58/100 and 184 recalls, it's important to be prepared for possible issues, especially concerning the electrical system and engine. Choose the E-Class if you prioritize luxury and performance but are comfortable with potentially higher maintenance and repair needs.

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

Is the Lexus IS more reliable than the Mercedes-Benz E-Class?: Based on our data, the Lexus IS is more reliable with an average score of 82/100 compared to 58/100. That's a significant difference worth considering.
Which has more recalls, the Lexus IS or the Mercedes-Benz E-Class?: The Mercedes-Benz E-Class has more recalls (184) 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 E-Class?: Adjusted for sales volume, the Lexus IS has a lower complaint rate at 0.7 per 10,000 sold versus 7 for the Mercedes-Benz E-Class. This per-sales normalization gives a fairer comparison than raw totals.

More Lexus IS comparisons

Lexus IS vs BMW 5-Series reliability Lexus IS vs Mercedes-Benz C-Class reliability Lexus IS vs BMW 4-Series reliability Lexus IS vs Lexus NX reliability Lexus IS reliability by year Lexus IS years to avoid

More Mercedes-Benz E-Class comparisons

Mercedes-Benz E-Class vs BMW 5-Series reliability Mercedes-Benz E-Class reliability by year Mercedes-Benz E-Class years to avoid

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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