2006 Mercedes Benz E350: what breaks, and at what mileage
What breaks on the 2006 Mercedes Benz E350
On the 2006 Mercedes Benz E350, the failure owners report most often is other fuel system problem, and the reports cluster around 90,000 miles. The earliest to appear is other powertrain problem, reported by a median of 70,000 miles. Overall it scores 73 out of 100, high risk for a 2006.
High risk for a 2006 — 78th riskiest of the 343 2006 vehicles we can rate. 482 owner reports; fleet size estimated from this year's own recall paperwork.
What owners report breaking
Owners have reported 46 named failure modes on the 2006 Mercedes Benz E350, and the three most-reported carry 39% of everything filed.
Other fuel system problem leads with 67 reports, about 14 per 1,000 vehicles and with the middle half of reports between 64k to 115,000 miles.
Fuel leak or fuel odor follows with 65 reports, usually reported between 55k to 107,500 miles. 1 of those report mention a fire.
Fuel tank, filler or EVAP failure follows with 56 reports, usually reported between 70k to 117,500 miles.
By system, the reports fall mostly into fuel (232), engine (77) and brakes (50).
The mileage the reports cluster at
398 of the reports on the 2006 Mercedes Benz E350 came with an odometer reading, and half of those were filed before 90,000 miles.
Cumulatively, 17% by 50,000 miles, 58% by 100,000 miles and 89% by 150,000 miles of the dated reports had been filed, with 3 filed above the top of the chart.
The busiest stretch is between 70,000 and 80,000 miles, which alone holds 10% of the dated reports.
9% of the dated reports were filed below 36,000 miles, so this is mostly a story about older, higher-mileage cars.
In the order they tend to show up: other powertrain problem around 71k, no-start or intermittent start failure around 72k, fuel pump failure around 79k and fuel gauge or level sensor failure around 82k.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
Showing the 12 most-reported failure modes of 46. The full list is in the table below.
How reports accumulate
Every report with an odometer reading, cumulative, from 0 to 200,000 miles. A further 3 reports came in above that, which is why the line stops short of the top. A curve that climbs early is a car with early problems, whatever its total.
- Line share of reports filed by that mileage
- Dashed the median reported mileage
How bad it is when it goes
Across the named modes, 17 mention a crash, 12 a fire, 15 an injury and 2 a fatality. Those are the words owners used in their own complaints, and NHTSA does not verify them, but they are the closest thing in this data to a measure of what a failure actually did.
The average severity weight across every report on this year is 4.99, where a stalled engine or a failed airbag weighs many times more than a rattling trim panel, and a figure this high means the reports are dominated by failures with safety consequences rather than annoyances. The weighting is set out in full on the methodology page.
What the top failures cost to put right, as editorial estimates for an independent US shop rather than figures from NHTSA: other fuel system problem at $300–$2,200, fuel leak or fuel odor at $300–$2,500, fuel tank, filler or EVAP failure at $250–$1,800 and other engine problem at $300–$4,000. Dealer labour, a seized bolt or a part that is no longer made can push any of these past the top of its range.
23% of the reports on this year sit in the engine, transmission, drivetrain or cooling systems — the four where a repair bill is usually four figures.
Every reported failure mode
| Failure mode | System | Reports | With reading | 25th | Median | 75th | Per 1,000 | Typical repair | Severity |
|---|---|---|---|---|---|---|---|---|---|
| Other fuel system problem | fuel | 67 | 62 | 64k | 90k | 115k | 14.2 | $300–$2,200 | High |
| Fuel leak or fuel odor | fuel | 65 | 57 | 55k | 85k | 107k | 13.7 | $300–$2,500 | Critical |
| Fuel tank, filler or EVAP failure | fuel | 56 | 48 | 70k | 98k | 117k | 11.8 | $250–$1,800 | Moderate |
| Other engine problem | engine | 44 | 30 | 72k | 96k | 116k | 9.3 | $300–$4,000 | High |
| Fuel pump failure | fuel | 35 | 26 | 64k | 79k | 100k | 7.4 | $600–$2,600 | High |
| Other brake problem | brakes | 32 | 27 | 106k | 129k | 146k | 6.8 | $300–$1,800 | High |
| Other powertrain problem | transmission | 26 | 24 | 44k | 71k | 85k | 5.5 | $400–$4,500 | High |
| Loss of braking | brakes | 15 | 15 | 126k | 143k | 145k | 3.2 | $400–$3,000 | Critical |
| Timing chain, belt or tensioner failure | engine | 11 | 9 | 83k | 92k | 162k | 2.3 | $1,200–$4,500 | Critical |
| No-start or intermittent start failure | engine | 10 | 9 | 72k | 72k | 162k | 2.1 | $200–$1,800 | Moderate |
| Fuel gauge or level sensor failure | fuel | 9 | 8 | 46k | 82k | 123k | 1.9 | $300–$1,200 | Moderate |
| Other electrical problem | electrical | 9 | 6 | — | 72k | — | 1.9 | $250–$2,000 | Moderate |
| Other speed control problem | adas | 6 | 4 | — | 51k | — | 1.3 | $250–$2,000 | Critical |
| Other body or interior problem | body | 6 | 4 | — | 63k | — | 1.3 | $200–$2,000 | Moderate |
| Oil leak | engine | 5 | 2 | — | 51k | — | 1.1 | $250–$2,200 | Moderate |
| Airbag inflator rupture | airbag | 5 | 2 | — | 165k | — | 1.1 | $0–$0 | Critical |
| Other wheel or tire problem | wheels | 5 | 4 | — | 20k | — | 1.1 | $200–$1,500 | High |
| Wiring harness or short circuit | electrical | 4 | 4 | — | 54k | — | 0.8 | $400–$3,500 | High |
| Sunroof failure or glass breakage | body | 4 | 3 | — | 124k | — | 0.8 | $700–$4,500 | High |
| Tail light, brake light or signal failure | lighting | 4 | 3 | — | 76k | — | 0.8 | $100–$900 | Moderate |
| Other driver assistance problem | adas | 4 | 2 | — | 100k | — | 0.8 | $250–$1,800 | High |
| Other visibility problem | glass | 4 | 2 | — | 112k | — | 0.8 | $150–$1,400 | Moderate |
| Stalling while driving | engine | 3 | 3 | — | 107k | — | 0.6 | $300–$2,500 | Critical |
| Lifter, cam or cylinder-deactivation failure | engine | 3 | 3 | — | 48k | — | 0.6 | $1,800–$7,000 | High |
| Complete transmission failure | transmission | 3 | 3 | — | 1k | — | 0.6 | $2,800–$8,000 | Critical |
| Steering column or shaft failure | steering | 3 | 3 | — | 87k | — | 0.6 | $600–$2,500 | Critical |
| Strut, shock or spring failure | suspension | 3 | 3 | — | 92k | — | 0.6 | $500–$2,000 | Moderate |
| Other steering problem | steering | 3 | 1 | — | 129k | — | 0.6 | $350–$2,400 | High |
| Other suspension problem | suspension | 3 | 1 | — | 70k | — | 0.6 | $350–$2,000 | Moderate |
| Other lighting problem | lighting | 3 | 2 | — | 94k | — | 0.6 | $120–$1,200 | Moderate |
| Torque converter failure | transmission | 2 | 2 | — | 92k | — | 0.4 | $1,100–$3,200 | High |
| Airbag failed to deploy in a crash | airbag | 2 | 2 | — | 2k | — | 0.4 | $1,000–$5,000 | Critical |
| Complete engine failure or seizure | engine | 1 | 1 | — | 97k | — | 0.2 | $4,500–$12,000 | Critical |
| Cooling fan failure | cooling | 1 | 1 | — | 50k | — | 0.2 | $350–$1,300 | Moderate |
| Shifter, linkage or stuck-in-park failure | transmission | 1 | 1 | — | 126k | — | 0.2 | $250–$1,400 | High |
| Differential or transfer case failure | drivetrain | 1 | 1 | — | 33k | — | 0.2 | $900–$4,200 | High |
| Engine sensor failure | electrical | 1 | 1 | — | 100k | — | 0.2 | $180–$900 | Moderate |
| ABS module or sensor failure | brakes | 1 | 1 | — | 25k | — | 0.2 | $500–$2,400 | High |
| Brake line, hose or caliper failure | brakes | 1 | 1 | — | 149k | — | 0.2 | $250–$1,600 | Critical |
| Parking brake failure | brakes | 1 | 1 | — | 127k | — | 0.2 | $250–$1,300 | Moderate |
| Airbag warning light or occupant sensor fault | airbag | 1 | 1 | — | 111k | — | 0.2 | $300–$1,600 | High |
| Seat belt or retractor failure | airbag | 1 | 0 | — | — | — | 0.2 | $200–$900 | High |
| Cruise control failure | adas | 1 | 1 | — | 120k | — | 0.2 | $200–$1,400 | High |
| Tire blowout or tread separation | wheels | 1 | 1 | — | 120k | — | 0.2 | $200–$1,500 | Critical |
| Paint peeling or clear coat failure | body | 1 | 1 | — | 16k | — | 0.2 | $600–$6,000 | Low |
| Software fault or failed update | software | 1 | 1 | — | 30k | — | 0.2 | $0–$600 | Moderate |
| Unclassified problem | other | 14 | 11 | 58k | 112k | 146k | 3.0 | — | Moderate |
Rate per 1,000 uses a fleet-size estimate derived from recall paperwork for this exact model year. It is a lower bound. Repair costs are typical independent-shop ranges for the failure, not figures from these reports.
How often, against how many were built
Scaled by an estimate of how many of these cars exist, the 2006 Mercedes Benz E350 draws about 102 per 1,000 vehicles, which puts it in the 97th percentile of complaint rates among 2006 vehicles we can rate.
That denominator is the weakest number on the page and it is fair to say so plainly. Rate per 1,000 uses a fleet-size estimate derived from recall paperwork for this exact model year. It is a lower bound.
The working figure is 4,733 vehicles. If the true number is twice that, every rate on this page is half what it says; the ranking against other 2006 vehicles, which is what the risk score uses, is far more robust than the rate itself.
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The odometer reading is the one the owner gave.
Other fuel system problem
Mercedes e350 2006, has bad odor of gas. I noticed after filling up gas, and parked my car in garage in the morning my whole garage had a smell of gas. I looked around underneath and every where inside outside I don't see any leak of gas. I can just smell gas fumes... I have called mercedes dealer haven't heard anything back and I research web and found so many other cars of mercedes have this problem.. I hope this can be recall and fix. *tr
On gas filled up, the entire garage smell of strong gasoline smell that can cause nausea and dizziness if garage door is not opened to allow fresh air, mechanics said there is a leak in the fuel system and similar car owners have the same issue. Smell will go away when the fuel level is below 7/8 level. I started having this problem at around 40,000 miles and currently around 48,000, I hardly use the vehicle due to the smell and safety concern. Mercedes should recall this defects for epa, safety and health concerns before any incidence and resulting class action lawsuit. *tr
Fuel leak or fuel odor
Car's (mercedes benz e350 sdn 2006) fuel gauge showed that the tank was half full. About ten minutes into the drive, the vehicle decelerated automatically from 65 MPH to 0 MPH. Police were called to prevent a pile on crash. Towed car to dealer who found that there was a gauge malfunction. Replaced gauge. Two months later, the very same problem recurs. Leads me to believe that the fuel gauge is unreliable can create a safety issue especially in freeway driving, the vehicle has been in the shop four times in the last three months to fix these issues. While fixing the sensors, the car had a distinct gasoline odor especially when tank was full. The dealer did a smoke test and concluded that the tank was leaking and had to be replaced. Now, with a new tank, and new sensors for fuel supply, the exact same problem re-occurs. I am very concerned about the safety implications of a fuel gauge malfunction. Please note that the fuel safety light in never triggered when the gauge malfunctions so the driver has no way of knowing that the gas is running out. *tr updated 01/13/11 *bf uddated 03/24/11
Car's (mercedes benz e350 sdn 2006) fuel gauge showed that the tank was half full. About ten minutes into the drive, the vehicle decelerated automatically from 65 MPH to 0 MPH. Police were called to prevent a pile on crash. Towed car to dealer who found that there was a gauge malfunction. Replaced gauge. Two months later, the very same problem recurs. Leads me to believe that the fuel gauge is unreliable can create a safety issue especially in freeway driving, the vehicle has been in the shop four times in the last three months to fix these issues. While fixing the sensors, the car had a distinct gasoline odor especially when tank was full. The dealer did a smoke test and concluded that the tank was leaking and had to be replaced. Now, with a new tank, and new sensors for fuel supply, the exact same problem re-occurs. I am very concerned about the safety implications of a fuel gauge malfunction. Please note that the fuel safety light in never triggered when the gauge malfunctions so the driver has no way of knowing that the gas is running out. *tr updated 01/13/11 *bf uddated 03/24/11
Fuel tank, filler or EVAP failure
Fuel tank seals are leaking causing a safety hazard. When I park in my garage there is a gasoline smell. The catalytic converter operates at a high temp. Making the car unsafe in a closed in place. Dealer mercedes-benz of north palm beach said this is not covered under warranty. The repair cost is $680. Safer a battle they offered $217 credit. I refused to pay for a repair on a car that is under warranty and has a serious safety defect. *tr
Fuel tank seals are leaking causing a safety hazard. When I park in my garage there is a gasoline smell. The catalytic converter operates at a high temp. Making the car unsafe in a closed in place. Dealer mercedes-benz of north palm beach said this is not covered under warranty. The repair cost is $680. Safer a battle they offered $217 credit. I refused to pay for a repair on a car that is under warranty and has a serious safety defect. *tr
Recalls on the 2006 model year
NHTSA has issued 4 recall campaigns covering the 2006 Mercedes Benz E350, affecting an estimated 6,037 vehicles. A recall is a different kind of evidence from a complaint: it is the regulator and the manufacturer agreeing that something has to be fixed, and the fix is free for as long as the car exists.
The campaigns cover visibility:sun/moon roof assembly. Whether the work was actually done on the car in front of you is a question only the VIN can answer, and the manufacturer or NHTSA will answer it free.
One caution about reading these together: a recall usually raises the complaint count for the same part, because owners who read about it go and file. The mileages stay informative; the counts get noisy.
VISIBILITY:SUN/MOON ROOF ASSEMBLY
33,456 vehicles 2024-11-19- Defect
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please see the recall report for a complete list of models and model years. The glass sunroof panel may not be properly secured and can detach.
- Consequence
- A detached sunroof panel can become a road hazard, increasing the risk of a crash.
- Remedy
- Dealers will inspect and replace the sunroof panel as necessary, free of charge. Owner notification letters were mailed January 10, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of previous NHTSA recall number 22V-954. MBUSA's number for this recall is 2024120001/2/3.
VISIBILITY:SUN/MOON ROOF ASSEMBLY
131,653 vehicles 2022-12-23- Defect
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The glass sunroof panel may not be properly secured and may detach.
- Consequence
- A detached sunroof panel may become a road hazard, increasing the risk of a crash.
- Remedy
- Dealers will inspect and replace the sunroof panel as necessary free of charge. Owner notification letters were mailed February 3, 2023. Owners may contact MBUSA customer service at 1-800-367-6372. This recall expands NHTSA recall number 19V-918. MBUSA's numbers for this recall are 2023010004, 2023010005, and 2023010006.
VISIBILITY:SUN/MOON ROOF ASSEMBLY
11,356 vehicles 2021-03-19- Defect
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2007 C350, C230, C280, CLK350, E320CDI, E350 Wagon, E350, 2006 C55 AMG, CLK500, CLS500, CLS55 AMG, E500 Wagon, E500, E55 AMG, 2007 CLK550, CLS550, CLS63 AMG, E550, E63 AMG, and E63 Wagon AMG vehicles. The bonding between the glass panel and the sliding roof frame may deteriorate, possibly causing the glass panel to detach from the vehicle.
- Consequence
- A detached glass panel can separate from the vehicle and become a road hazard, increasing the risk of a crash.
- Remedy
- MBUSA will notify owners, and dealers will inspect the glass panel bonding and replace the sliding roof, as necessary, free of charge. Owner letters were mailed May 7, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of recall number 19V-918. MBUSA's number for this recall is 2021040012.
VISIBILITY:SUN/MOON ROOF ASSEMBLY
747,928 vehicles 2019-12-20- Defect
- Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2001-2011 vehicles. The bonding between the glass panel and the sliding roof frame may deteriorate, possibly resulting in the glass panel detaching from the vehicle. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V918-4126.pdf
- Consequence
- A detached glass panel can separate from the vehicle and become a road hazard, increasing the risk of a crash.
- Remedy
- MBUSA will notify owners, and dealers will inspect the glass panel bonding and replace the sliding roof, as necessary, free of charge. The recall began July 10, 2020. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2020040011.
Recall work is free at a franchised dealer regardless of the car's age. Check the VIN at nhtsa.gov/recalls before assuming it was done.
How it ranks in the 2006 field
The score at the top of the page, placed among its peers. The zones are the same thresholds the scorer applies, read out of the scorer itself, so the picture and the band word cannot disagree.
Scores are ranked within the model year, never across years, because an older car has had longer to accumulate reports.
- Left fewer and less serious reports
- Right more, or worse
- Marker this vehicle
Better and worse years of the same car
High risk for a 2006 — 78th riskiest of the 343 2006 vehicles we can rate. Because the ranking is against the same model year only, age cancels out of it.
Across the 12 model years of this car that carry enough reports to score, 2005 comes out best at 58 and 2014 worst at 79, with 2006 itself at 73.
If the model year is negotiable, 2005 scores lower than 2006 by a margin worth acting on. Same body, same engines, different luck — usually a supplier change or a mid-cycle fix, which the complaint data can show but never explain.
Within the 2006–2014 generation specifically, 2007 is the strongest year at 71 and 2014 the weakest at 79.
Scores compare each year against other cars of the same model year, so a low number on an older car is a real result and not an artefact of age.
Shorter is better. Years with too few reports to score are shown without a bar rather than as a zero, because no data is not good news.
Within the 2006-2014 generation, 2007 Mercedes Benz E350 scores best at 71 and 2014 Mercedes Benz E350 worst at 79.
Where to spend the inspection money
The mileages below are where the first quarter of reports for each mode had already been filed, which makes them the point at which a fault is worth looking for rather than the point at which it happens: other powertrain problem from about 44k, fuel gauge or level sensor failure from about 46k, fuel leak or fuel odor from about 55k and fuel pump failure from about 64k.
On a 2006 Mercedes Benz E350 with more miles than that on it, the useful question to put to a seller or a mechanic is whether other powertrain problem has been dealt with, and if so with what parts and at whose expense. A car that has already had the repair is in a different position from one that has not.
Treat it as where to point the inspection, not as a prediction. A well-maintained example can sail past every mileage on this page, and a neglected one can fail well before the first of them.
What this page cannot tell you
482 owner reports; fleet size estimated from this year's own recall paperwork. Every count on this page is therefore a floor: it is the number of owners who went to the trouble of filing with a federal agency, which is a small and self-selected fraction of the owners who had the fault.
Of those 482 reports, 398 carried an odometer reading, so the mileages here describe 83% of the sample rather than all of it. Owners also round: readings pile up on multiples of ten thousand, which is why this site publishes "about 90,000 miles" and not "91,438".
The failure modes are assigned by software reading the owner's own words, which is accurate in bulk and wrong in individual cases. A mode with a handful of reports may contain a misfiled one.
And nothing here predicts what one car will do. These are other people's complaints, filed years apart, on cars maintained by strangers. Read the page as a map of where this model year has previously gone wrong, then have the specific car in front of you inspected.
Questions this page answers
What are the most common problems with the 2006 Mercedes Benz E350?
The most-reported failures are other fuel system problem (67 reports, median 90,000 miles), fuel leak or fuel odor (65 reports, median 85,000 miles) and fuel tank, filler or evap failure (56 reports, median 97,500 miles). Counts come from owner complaints filed with NHTSA, which are voluntary, so they show what owners bothered to report rather than every fault that occurred.
At what mileage do 2006 Mercedes Benz E350 problems start?
Other powertrain problem is the earliest failure mode to show up, with a median reported mileage of 70,000 miles and a quarter of reports before 45,000 miles. Across all failure modes on this year, the median report sits at 90,000 miles.
Is the 2006 Mercedes Benz E350 reliable?
It scores 73 out of 100 on our risk index, which is high — 78th riskiest of the 343 2006 vehicles we can rate. The score is a comparison against other 2006 vehicles, not a prediction about any individual car, and it is built from complaint rates, severity and how early failures appear.
Which year of the Mercedes Benz E350 is best?
Within the 2006–2014 generation, 2007 scores best at 71 out of 100 and 2014 worst at 79. Same body, same engines, different luck.
Where this comes from. Every figure above is computed from NHTSA owner complaints and recall records for this exact make, model and year. Complaints are voluntary and self-selected, so treat counts as a floor. The methodology page writes out each formula, and the same numbers are available as JSON.
What breaks at my mileage Compare with another car
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed