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

Yes, by a large margin. The IS has 44 owner complaints, or 0.7 per 10,000 sold, while the E-Class has 469, or 7 per 10,000 sold. The E-Class problems also tend to be more disruptive, including dead hybrid batteries and total transmission failures.

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

The E-Class, by a wide gap. Federal recall records show 184 recalls across its 8 model years from 2018 to 2026. The IS has 6 recalls across 9 model years. Check any E-Class you consider for open recalls before buying.

What is the most common problem with the Mercedes-Benz E-Class?

The electrical system, with 36 complaints. The 48-volt battery can die early and leave the car unable to start or move, sometimes before 1,000 miles. Owners report tows, long waits for parts, and in one case a fire at idle after a 12-volt battery message.

What goes wrong with the Lexus IS?

Complaints are few. Two involve a sunroof glass panel shattering while driving, with one driver hit in the eye. Two involve a tire separating from its rim or coming off the car, one at highway speed with a crash and 2 injuries.

Which model years of the IS and E-Class should I avoid?

Avoid 2018 and 2019 for both cars, since those are the weakest years for each. For the IS, 2020 is among the strongest. Newer years show fewer complaints partly because they have had less time to collect them.

Last updated: 2026-10-10

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

More Reliable

Lexus IS

Excellent

Mercedes-Benz E-Class

Good

Reliability favors the Lexus IS by a wide margin over the Mercedes-Benz E-Class. The IS drew far fewer owner complaints and recalls. The E-Class has a long list of battery, engine, and transmission problems that can leave a car stranded.

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

Most of the 2018 to 2026 window falls inside the third-generation IS (XE30), which covered US model years 2014 to 2023 and had a facelift in 2020. The 2018 and 2019 cars came before that facelift and rank as the weakest years. The 2020 car is a facelift-year model and one of the strongest. The E-Class spent most of this span in its fifth generation (W213), which ran 2016 to 2023 with a facelift in 2020. The sixth generation (W214) began in 2023. The weakest E-Class years, 2018 and 2019, are early W213 cars. Newer years have had less time to collect complaints, so treat their clean records with care.

Verdict

The Lexus IS is more reliable than the Mercedes-Benz E-Class, scoring 83/100 vs 60/100.

The more reliable car is the Lexus IS, and the gap is large. Owners filed far fewer complaints about it, and federal recall records show only 6 recalls across its model years against 184 for the E-Class. The E-Class still stands well, but its problems are more frequent and more disruptive: dead 48-volt batteries that leave cars undrivable, limp mode, and transmission failures at low mileage. The IS has few filed problems, which is the deciding point.

Key Differences

1Lexus IS has 178 fewer total recalls
2Lexus IS scores 23 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	83/100	60/100
Years Tracked	9	8
Total Recalls	6	184
Complaints per 10k Sold	0.7	7
Year Wins	8	0

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

Thin is the best word for the IS profile. Owners report a sunroof glass panel shattering on the highway, and a tire coming off its rim, one case with a crash and 2 injuries. Those are serious but rare. The E-Class spreads trouble across many systems. A failed 48-volt battery can leave the car unable to start or move, sometimes before 1,000 miles. Cylinder misfires can send the car into limp mode on the freeway. Transmissions have failed completely at low mileage, and front seat belts have failed to retract. Crash-linked reports appear in both its electrical and steering areas. The IS has one crash-linked area, tires.

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
WHEELS	—None	0.1Very Low
BACK OVER PREVENTION	—None	0.1Very Low
AIR BAGS	—None	0.1Very Low
FUEL SYSTEM	—None	—None
FUEL/PROPULSION SYSTEM	—None	—None
FORWARD COLLISION AVOIDANCE	—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
2026	87/1000R / 0C	76/1000R / 0C	Lexus IS
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

Best years to cross-shop: The 2024 Lexus IS scored 83/100 and the 2024 Mercedes-Benz E-Class scored 63/100 — the strongest shared model years that have been on the road for at least two years, where available.

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

Buy the IS if you want the lowest chance of an unplanned breakdown. Few complaints and few recalls make it the safer pick for a daily commuter or a car you plan to keep for years. Target 2020, which is among its strongest years. Be cautious with 2018 and 2019, its weakest years. Whichever year you choose, check the tires and ask about sunroof glass history. Choose the E-Class only if its ride and features matter more to you than low risk, and you accept higher odds of a costly fix. Ask for proof that every open recall was completed, since the model has many. On any car with the 48-volt mild hybrid system, ask about battery replacements. Avoid 2018 and 2019, its weakest years. Steering recall repairs have also waited on parts, so check the status before you buy. For a newer E-Class, remember that complaints build over time, so a clean record on a recent year proves little.

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

Is the Lexus IS more reliable than the Mercedes-Benz E-Class?: Yes, by a large margin. The IS has 44 owner complaints, or 0.7 per 10,000 sold, while the E-Class has 469, or 7 per 10,000 sold. The E-Class problems also tend to be more disruptive, including dead hybrid batteries and total transmission failures.
Which has more recalls, the IS or the E-Class?: The E-Class, by a wide gap. Federal recall records show 184 recalls across its 8 model years from 2018 to 2026. The IS has 6 recalls across 9 model years. Check any E-Class you consider for open recalls before buying.
What is the most common problem with the Mercedes-Benz E-Class?: The electrical system, with 36 complaints. The 48-volt battery can die early and leave the car unable to start or move, sometimes before 1,000 miles. Owners report tows, long waits for parts, and in one case a fire at idle after a 12-volt battery message.
What goes wrong with the Lexus IS?: Complaints are few. Two involve a sunroof glass panel shattering while driving, with one driver hit in the eye. Two involve a tire separating from its rim or coming off the car, one at highway speed with a crash and 2 injuries.
Which model years of the IS and E-Class should I avoid?: Avoid 2018 and 2019 for both cars, since those are the weakest years for each. For the IS, 2020 is among the strongest. Newer years show fewer complaints partly because they have had less time to collect them.

More Lexus IS comparisons

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More Mercedes-Benz E-Class comparisons

Mercedes-Benz E-Class vs BMW 5 Series reliability Mercedes-Benz E-Class vs Volvo S90 reliability Mercedes-Benz E-Class vs Lexus ES reliability Mercedes-Benz E-Class vs Land Rover Range Rover Sport reliability Mercedes-Benz E-Class reliability by year Mercedes-Benz E-Class years to avoid

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How we score the Lexus IS and Mercedes-Benz E-Class

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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