Engine And Engine Cooling Problems of Smart Fortwo - part 1

Smart Fortwo owners have reported 54 problems related to engine and engine cooling (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Smart Fortwo based on all problems reported for the Fortwo.

1 Engine And Engine Cooling problem of the 2017 Smart Fortwo

Failure Date: 11/20/2025

The power electronics control unit (ecm), part no. A453-900-72-11, and the DC-to-DC converter have both failed, rendering this all-electric vehicle completely inoperable. There is no backup propulsion system. The DC-to-DC converter powers safety-critical systems including lighting, turn signals, and hazard flashers — its failure could cause loss of safety-critical functions while driving. Total repair estimate is $20,560. 43. The manufacturer mercedes-benz USA denied warranty coverage using a canadian warranty document for the wrong vehicle model. Mbusa has shut down the Smart warranty portal at the dealer level and their website returns no warranty data for Smart vehicles despite active warranty obligations. Smart exited the us market and mbusa appears to have abandoned warranty support while warranties remain active.

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2 Engine And Engine Cooling problem of the 2015 Smart Fortwo

Failure Date: 03/23/2025

Sunday 3/23 I was driving west on 225 heading towards work, all of a sudden the check engine light comes on and all kinds of other lights on the dash came on. I got pulled over and looked in the rear view mirror I seen flames. Quickly grabbed my stuff and got out of the car. The investigation at the time stated most of the heat was coming from the engine.

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3 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 09/25/2024

The contact owns a 2008 Smart Fortwo. The contact received notification of NHTSA campaign number: 18v273000(engine and engine cooling) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated while driving at an undisclosed speed, the contact noticed there was smoke coming from the engine. The contact stated that the vehicle had caught on fire. No warning lights illuminated. The contact exited the vehicle quickly and entered a mechanic shop and a mechanic put on safety gloves to extinguish the fire with a fire hose. The fire was able to be extinguished by the mechanic. The mechanic mentioned that the insulation mat detached from the vehicle and caught on fire. No injuries were sustained. A fire report was not filed since the fire department was not at the scene. A police report was not filed. The vehicle was towed to the contact's parents' home where it remained. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 80,000. Parts distribution disconnect.

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4 Engine And Engine Cooling problem of the 2009 Smart Fortwo

Failure Date: 09/05/2024

The contact owns a 2009 mercedes-benz Smart Fortwo. The contact received notification of NHTSA campaign number: 18v273000 (engine and engine cooling); however, the part to do the repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The manufacturer scheduled an appointment at the dealer; however, the dealer contacted the contact and decline to honor the recall repair appointment. The contact contacted two dealers and was informed that they do not perform repair on mercedes-benz Smart cars. The contact had not experienced a failure. Parts distribution disconnect.

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5 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 09/01/2024

Mercedes-benz USA has no service centers on long island,NY that might fix the recall issue. For a time they were the only Smart car service provider after Smart car dealers were abandoned. Mb USA currently will not do the recall and offers no reasonable alternative. The issue is potential engine compartment/total vehicle fire due to compartment insulation failure. Offers no suggestions for doing the recall service except one mb dealer in CT at one time might be able; if I research them.

6 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 08/30/2024

The contact owns a 2008 Smart Fortwo. The contact received notification of NHTSA campaign number: 18v273000 (engine and engine cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The manufacturer suggested that the vehicle be towed to another local dealer. The contact had not experienced a failure. Parts distribution disconnect.

7 Engine And Engine Cooling problem of the 2009 Smart Fortwo

Failure Date: 08/29/2024

The contact owns a 2009 mercedes-benz Smart Fortwo. The contact received notification of NHTSA campaign number: 18v273000 (engine and engine cooling); however, the part to do the recall repair was not yet available. The local dealer and several unknown dealers were contacted and informed the contact that they did not service Smart vehicles. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

8 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 06/04/2024

The contact owns a 2008 mercedes-benz Smart Fortwo. The contact received a notification of NHTSA campaign number: 18v273000 (engine and engine cooling). The parts were available however; the dealer list the manufacturer provided that the recall repair instructions were not available. The contact called multiple dealers however services could not be provided. The vehicle was not repaired. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

9 Engine And Engine Cooling problem of the 2016 Smart Fortwo

Failure Date: 01/18/2024

The contact owns a 2016 Smart Fortwo. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated with a loud whirring noise. The contact took the vehicle to an independent mechanic who diagnosed that the air intake changeover valves had failed. The independent mechanic advised the contact that the parts needed to fix the vehicle were difficult to locate. The vehicle was repaired. The contact stated that about a month later, the check engine warning light illuminated again. The contact took the vehicle to the same independent mechanic who diagnosed the vehicle with a secondary air injection pump failure. The independent mechanic advised the contact that the parts were difficult to find. The contact found the parts, and the vehicle was repaired. The check engine warning light illuminated again. The manufacturer was made aware of the failure and confirmed that the VIN was not included in a recall. The failure mileage was 58,299.

See all problems of the 2016 Smart Fortwo 🔎.

10 Engine And Engine Cooling problem of the 2016 Smart Fortwo

Failure Date: 04/13/2023

The car just shuts off while I am driving. I can tell now when it is about to shut off. I have had this problem since I purchased the car in 2016. I have taken the car to the dealership and called Mercedes Benz several times and they will not do anything. I will die because the car is getting worse and shuts off more frequently now. Can you get Mercedes Benz to help me? they told me that they don't care if I die due to a bad product they sold me. Please help. Please, I am begging you I do not want to hurt someone else due to this bad car.

11 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 09/15/2022

We were driving in greensboro nc this afternoon on the way to my husbands birthday dinner when off of bridford? parkway our 2008 Smart car passion for two started malfunctioning all lights flashing on instrument panel & brakes quit & another motorist drove up beside us with window down screaming get out your car is on fire!!! we managed to stop on side of road at woods & jumped out car was on fire looked like under back tires and engine in back! we grabbed what we could save & ran. 911 was called & fire and police came. 2 witnesses also to event we have photos & videos. Our car burned all the way down to frame! total loss! we could have died because we couldnt see the fire behind us under car & if not for the man we may have blown up!!.

12 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 10/08/2021

Engine fire destroyed vehicle while driving on interstate at 65 mph. Vehicle was serviced and maintained per manufacturer maintenance schedule at authorized dealer. No prior issues with vehicle. Vehicle also passed emission check on 09/29/2021 with no obd error codes reported during inspection. Mileage: 60k.

13 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 09/14/2021

I am seeing melted and possible burnt material on the underside of the engine compartment cover and I am concerned for a fire to develop. . I have photos I will send.

14 Engine And Engine Cooling problem of the 2009 Smart Fortwo

Failure Date: 08/13/2021

The contact owns a 2009 mercedes-benz Smart Fortwo. The contact stated while attempting to have the vehicle repaired under NHTSA campaign number: 18v273000 (engine and engine cooling) but was denied repair due to the vehicle being a Smart car. The manufacturer was informed of failure and told the contact that since the vehicle was not a mercedes-benz vehicle, they would not honor the recall repair. Parts distribution disconnect.

15 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 06/26/2021

The contact owns a 2008 mercedes-benz Smart Fortwo. The contact stated while parking the vehicle, there was smoke coming from the engine compartment. The vehicle was on fire under the hood. The fire department was called to the scene and the fire was extinguished. A fire report was filed. The vehicle was not towed. There was no injury sustained. There was no warning light illuminated. Upon investigation, the contact associated the failure with NHTSA campaign number: 18v273000 (engine and engine cooling). The manufacturer was not informed of the failure. The failure mileage was approximately 80,000.

16 Engine And Engine Cooling problem of the 2016 Smart Fortwo

Failure Date: 06/21/2021

I have had it for 6 years. And it has been in for repair, at least 7 times in those somewhere around one time per year. Sometimes twice. All for heating 3 times same piece not sure what to do but it always has to do with no heat to car or overheating my insurance through carmax bout to end gonna cost me alot to keep it even though I love the car seems like a massive problem that mercedes should do something about I've called and got tge run a round.

17 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 10/28/2020

Was driving at 35 mph at night, lights flashed on/off, her a thump and pop, car and lights shut off, then a large fire erupted in engine compartment. Vehicle was totally destroyed.

18 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 07/14/2020

While driving on the highway and we noticed sudden smoke within the car. The car got very hot. We stopped and opened the engine compartment in the trunk and noticed that the insulation mat in the engine compartment was on fire. We did not notice any causes that could have lead to the burn besides the mat itself.

19 Engine And Engine Cooling problem of the 2009 Smart Fortwo

Failure Date: 06/13/2020

I sent an email not to long ago regarding my Smartfortwo. I wanted to cancel or delete my complaint. Appears that my issue has nothing to do with key reprogramming. My issue is likely clutch / actuator issue. Please cancel, delete, ignore the complaint that is in error.

20 Engine And Engine Cooling problem of the 2016 Smart Fortwo

Failure Date: 12/09/2019

Tl- the contact owns a 2016 Smart Fortwo. The contact stated that after driving the vehicle for three months, he left the vehicle parked for a month. After a month, the vehicle would no longer start. The contact had the vehicle towed to mercedes-benz of san francisco 500 8th st, san francisco, CA 94103 where the dealer diagnosed the vehicle with battery management system failure. They informed him that mercedes would not cover the vehicle under warranty due to the lack of service upkeep. The dealer then gave him an estimate of $15,000. 00 for the repair. The manufacturer was notified and also denied him service. The vehicle had not been repaired. The failure mileage was 13,700. Jo.

21 Engine And Engine Cooling problem of the 2009 Smart Fortwo

Failure Date: 09/01/2019

2009 Smart Fortwo pure/passion. Consumer writes in regard to safety NHTSA recall notice #18v273. The consumer stated the dealer was to arrange having the vehicle repaired locally due to the consumer's disability. The dealer did not make an arrangement that the consumer found reasonable.

22 Engine And Engine Cooling problem of the 2010 Smart Fortwo

Failure Date: 03/25/2019

My car was in motion on the freewaywhen it seized. When stopped the engine in the back caught fire, my vehicle burned to the ground, there were recalls for this the year before, (for the 2009 Smart car) there are videos documnting this on you tube. My brother who worked for mercedes (the parent company of Smart) as a mechanic told me to see if there were any recalls.

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23 Engine And Engine Cooling problem of the 2013 Smart Fortwo

Failure Date: 03/04/2019

This car is an ev. Water in the brake light switch, will not let the car recharge. Water and mud in the 12v power cable on the drivers side of the battery pack has caused a 12v power cable fitting to crack. Both of these problems are on the bottom side of the car. These problems will not let the car recharge! this is not a flood car! it has 76,087 mile on it!!!!! my dealer is a joke! I have not been able to drive my for 8 months. Also the key fob is broken. This also will not let me drive my car. I am still paying for this piece of junk! (xxxxxx) owner. Redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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24 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 07/01/2018

Received recall on rear insulation mat fire hazard.

25 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 06/01/2018

The contact's mother owns a 2008 Smart Fortwo. The contact received notification of NHTSA campaign number: 18v273000 (engine and engine cooling). The local dealer was notified of the recall but informed the contact that the recall could not be serviced at their location. The manufacturer was notified of the failure and referred the contact to a dealer that was 180 miles away. The manufacturer was informed that the owner of the vehicle was elderly and would not be able to travel that far a distance yet was offered no additional assistance. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. Parts distribution disconnect.

26 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 06/01/2018

2008 mercedes-benz Smart car. Consumer writes with concern for vehicle catching fire while idle in drive-way following recall and repairs by manufacturer.

27 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 05/14/2018

Tl the contact owned a 2008 mercedes-benz Smart Fortwo. While the vehicle was parked in a parking garage, the garage attendant called the contact and informed him that smoke was emerging from under the hood. The vehicle caught fire without warning or impact. The fire department extinguished the fire. A police report was not filed and there were no injuries. The air bags did not deploy. The vehicle was towed to an independent mechanic, but the cause of the fire was not determined. The insurance adjuster deemed the vehicle a total loss; however, the contact will take possession of it once it becomes diagnosed and repaired. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was 205,000.

28 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 05/13/2018

Tl the contact owns a 2008 mercedes-benz Smart Fortwo. While waiting to make a turn, the contact noticed smoke emerging from the rear of the vehicle. The contact pulled over to the side of the road and exited the vehicle as it became engulfed in flames. The police arrived and called the fire department to extinguish the fire. The vehicle was towed to an impound lot and retreived by the insurance company. There were no injuries and a police report was not filed. The contact researched online and found NHTSA campaign number: 18v273000 (engine) for the first time. The dealer and manufacturer were not contacted. The vehicle was not repaired. The approximate failure mileage was 103,000.

29 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 04/14/2018

Tl-the contact owned a 2008 Smart for two. The contact stated that after the vehicle was parked, the vehicle burst into flames. The contact stated that he was unaware of how or where the fire started. The vehicle was towed to an insurance auto auction. A local dealer was not contacted. The manufacturer was contacted and notified of the failure. The approximate failure mileage was 100,400. The vehicle was destroyed. Ah.

30 Engine And Engine Cooling problem of the 2009 Smart Fortwo

Failure Date: 02/13/2018

I bought the car and less than two weeks the transmission went there was flashing and beeping and the car would not go into gear. I bought a 2009 and in 2008 there was a recall on that model for that transmission problem sometimes the car won't start sometimes now and the hood latch is broken.

31 Engine And Engine Cooling problem of the 2009 Smart Fortwo

Failure Date: 10/08/2017

I represent the owners of this 2009 Smart Fortwo vehicle. My client drove the vehicle home after work and parked in the garage. Approximately 30 minutes after parking the vehicle in the garage, my client was awoken by his son who smelled smoke. My client followed the smoke to the garage where he found the vehicle on fire. It appeared the fire started in the engine compartment. The fire spread quickly throughout the garage and into the house. The property damage is extensive, including totaling both vehicles in the garage and extensive property damage to the home.

32 Engine And Engine Cooling problem of the 2013 Smart Fortwo

Failure Date: 08/23/2017

(kh missing dealer name) tl the contact owns a 2013 Smart Fortwo. The contact stated that the vehicle experienced a complete loss of power. In addition, the contact noticed white smoke. The failure occurred without warning. The vehicle was towed to an independent mechanic, but was not diagnosed. The vehicle was also towed to 500 8th st, san francisco, CA where it was diagnosed that the coolant damaged the engine compartment and the engine assembly needed to be replaced. The dealer refused to do the repair due to negligence. The manufacturer was notified of the failure and offered a ten percent discount. The failure mileage was approximately 33,000.

33 Engine And Engine Cooling problem of the 2008 Smart Fortwo

Failure Date: 06/21/2017

As my wife was filling the gas tank it failed to build back pressure that would normally shut off the gas pump. This has occurred twice. Then on mon. The 19th of June after work my wife complained of a strong gas oder inside the vehicle. She drove the car to work on tues. Morning and had the same strong gas smell. She thought that it might be due to overfilling the tank. When she got home on tues. Night we noticed a steady stream of gas pouring out of the vehicle under the car near the passenger side of the vehicle. The gas only streamed out when the engine was running. Once we shutoff the car it would dribble out for a few more minutes then eventually stop. When I turned the car on it would begin flowing fuel onto the ground immediately. I had the car towed to the Mercedes Benz\Smart car dealer located nearest to me. After the car was towed I started to do some research online to determine if this is a common issue. I was surprised to find that there have been many complaints posted to chat room boards regarding a fuel leak and a broken discharge line from the fuel pump to the engine. What I was even more startled to find was literally hundreds of different videos of Smart cars catching on fire. I soon discovered that there is an open investigation with the NHTSA for engine fires on model 2008-2009 Fortwo Smart cars. The investigation number is pe-16-016 the dealership called me today and stated that the fuel pump is leaking gas on top of the tank and that the fuel pump will need to be replaced. They have not dropped the fuel tank yet. They witnessed the fuel leak using a mirror. It is now Friday at 2:15pm pst, and to late for them to start repairing the fuel pump today. The dealership plans to drop the tank and replace the fuel pump on tues. Morning. I will be there to photograph the location of the break on the fuel line and update this complaint after that.

34 Engine And Engine Cooling problem of the 2016 Smart Fortwo

Failure Date: 01/20/2017

Car shuts down while driving. This happens usually after quick stops or sudden starts like at a red light or when a car suddenly stops on front of me. I have had this issue happen to me several times. I have tried contacting mercedes-benz and the dealership where I bought tge car but they do nothing. I need help getting this issue repaired.

35 Engine And Engine Cooling problem of the 2016 Smart Fortwo

Failure Date: 12/15/2016

Since I purchased the car from hampton auto mall 757 865 8000 there has been an issue with the steering, brakes, gas system, fuel gauge etc. . The dealership or mercedes refuses to fix the problem since I purchased it in 2016. I have almost died due to steering problems and gas tank. Please get a mechanic to check the steering and for small tears in your gas tank on Smarts. The dealership I bought my car from refuses to fix issue because of lemon laws the service advisor told me so.


Other Common Engine And Engine Cooling related problems of Smart Fortwo


Fortwo Service Bulletins
Fortwo Safety Recalls
Fortwo Defect Investigations