Is the 2011 Mercedes-Benz S400 reliable?

The 2011 Mercedes-Benz S400 has 8 complaints filed with NHTSA (0.3x the segment average). Our reliability verdict: above-average. Most common issue: ELECTRICAL problems.

What are common problems with the 2011 Mercedes-Benz S400?

Top problems: ELECTRICAL (2 complaints, avg repair $500); ENGINE (2 complaints, avg repair $500); SUSPENSION (1 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2011 Mercedes-Benz S400?

No recalls have been issued for the 2011 Mercedes-Benz S400.

How much does it cost to fuel a 2011 Mercedes-Benz S400?

The 2011 Mercedes-Benz S400 gets 21 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $2286. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2011 Mercedes-Benz S400?

Estimated US average full-coverage insurance for the 2011 Mercedes-Benz S400 is approximately $1,821/year (sedan-luxury class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2011 Mercedes-Benz S400

Problems, Recalls & Reliability Report

Above Average

Quick Summary

The 2011 Mercedes-Benz S400 has 8 owner complaints filed with NHTSA — that's 0.3x the segment average of 25. The most common issue is electrical problems (25% of all complaints), specifically: tl* the contact owns a 2011 mercedes-benz s400. while driving at an unknown speed, the vehicle stalled without warning. the vehicle was taken to mercedes-benz of tampa (4400 n dale mabry hwy, tampa, fl 33614) where it was diagnosed that the power electronic control module failed. the vehicle was not.

Total Complaints

Recalls Issued

—/5

Safety Stars

0.3x

vs Segment Avg

Known Problems(top 5 of 6)

ELECTRICAL

2 complaints

25%

• TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S400. WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF TAMPA (4400 N DALE MABRY HWY, TAMPA, FL 33614) WHERE IT WAS DIAGNOSED THAT THE POWER ELECTRONIC CONTROL MODULE FAILED. THE VEHICLE WAS NOT
• TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S400. THE CONTACT NOTICED A FLASHING INDICATOR ON THE INSTRUMENT PANEL RELATED TO THE VEHICLE OVERHEATING. A SECOND UNKNOWN WARNING INDICATOR ALSO ILLUMINATED. THE DEALER (PARK PLACE MOTORCARS MERCEDES-BENZ ARLINGTON, 4201 BELTWAY PL, ARLINGTON, TX 76018, 81

Typical onset: 50K miles Est. repair: $500

“TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S400. WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF TAMPA (4400 N DALE MABRY HWY, TAMPA, FL 33614) WHERE IT WAS DIAGNOSED THAT THE POWER ELECTRONIC CONTROL MODULE FAILED. THE VEHICLE WAS NOT”

— NHTSA complaint filing

Fuel Cost Calculator for 2011 Mercedes-Benz S400

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$2,286

Per month

$191

Per mile

19.1¢

MPG

City driving (worst-case MPG)

$2,527/yr

Highway driving (best-case MPG)

$1,920/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2011 Mercedes-Benz S400

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$1,821

Full coverage / month

$152

Liability only / year

$710

vs US avg

+9%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (sedan-luxury)1.28x

× theft risk1.00x

× safety rating1.00x

× vehicle age0.85x

= Full coverage estimate$1821

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Mercedes-Benz S400 Service Intervals

Oil change

10K mi / 12 mo

Tire rotation

10K mi

Brake fluid

24 months

Transmission fluid

40K mi

Engine coolant

150K mi

Spark plugs

60K mi

Cabin air filter

20K mi

Engine air filter

40K mi

Differential (AWD/4WD)

40K mi

Service A / Service B alternating schedule. Requires MB-approved oil (229.5 spec typically).

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Mercedes-Benz New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

4 yr / 50K mi

Powertrain

4 yr / 50K mi

Hybrid/EV battery

10 yr / 155K mi

Corrosion (rust perforation)

4 yr / 50K mi

Roadside assistance

4 yr / unlimited mi

EQ EV battery warranty is 10 years/155,000 miles

These are the terms for a new Mercedes-Benz. If you're buying a used 2011 S400, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Mercedes-Benz dealer for VIN-specific remaining warranty.

Estimated Repair Costs

ELECTRICAL(~50K mi)

$500

ENGINE(~50K mi)

$500

SUSPENSION(~50K mi)

$500

WHEELS(~50K mi)

$500

ELECTRONIC SYSTEMS(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 8 owner complaints for this specific year, here's what to check or ask about:

☐
ELECTRICAL: TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S400. WHILE DRIVING AT AN UNKNOWN SPEED, THE VEHICLE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF TAMPA (4400 N DALE MABRY HWY, TAMPA, FL 33614) WHERE IT WAS DIAGNOSED THAT THE POWER ELECTRONIC CONTROL MODULE FAILED. THE VEHICLE WAS NOT
Typically appears around 50K miles. Repair cost ~$500
☐
ENGINE: TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S400. THE CONTACT NOTICED A FLASHING INDICATOR ON THE INSTRUMENT PANEL RELATED TO THE VEHICLE OVERHEATING. A SECOND UNKNOWN WARNING INDICATOR ALSO ILLUMINATED. THE DEALER (PARK PLACE MOTORCARS MERCEDES-BENZ ARLINGTON, 4201 BELTWAY PL, ARLINGTON, TX 76018, 81
Typically appears around 50K miles. Repair cost ~$500
☐
SUSPENSION: 'TAKATA RECALL' MY AIR SUSPENSION WONT MAINTAIN THE PROPER AIR TO KEEP THE AIR SUSPENSION INITS PROPER PLACEWHEN PARKED. ALSO THE TIRE PRESSURE MONITORS IS VERY ERATIC AND DONT DISPLAY TIRE PRESSURE LIKE ITS SUPPOSE TOO WHILE DRIVNG LOCALLY AND ESPECIALLY ON THE HIGHWAY. THIS CAR ONLY HAVE 65000 MIL
Typically appears around 50K miles. Repair cost ~$500
☐
WHEELS: 'TAKATA RECALL' MY AIR SUSPENSION WONT MAINTAIN THE PROPER AIR TO KEEP THE AIR SUSPENSION INITS PROPER PLACEWHEN PARKED. ALSO THE TIRE PRESSURE MONITORS IS VERY ERATIC AND DONT DISPLAY TIRE PRESSURE LIKE ITS SUPPOSE TOO WHILE DRIVNG LOCALLY AND ESPECIALLY ON THE HIGHWAY. THIS CAR ONLY HAVE 65000 MIL
Typically appears around 50K miles. Repair cost ~$500
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)

Mercedes-Benz S400 — Year Comparison

How does 2011 compare to other years? Fewer complaints = more reliable.

Full years-to-avoid analysis →

NHTSA Safety Rating

No NHTSA safety rating available

At a Glance

Complaints: 8
Recalls: 0
Fire reports: 0
Crash reports: 0
Injury reports: 0
Segment avg: 25

Check a Specific VIN

See recalls for YOUR 2011 Mercedes-Benz S400

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