Owner-reported complaints naming the engine system, filed with NHTSA
Data refreshed
Engine reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
9
Latest Mar 9, 2026
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
43%
of 21 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
2
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
6
What this page shows
Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components. Every record below is an owner-reported complaint about the 2016 Smart Fortwo submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 9 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
Owner reports naming engine
Shown in the owner’s own words, exactly as filed
Engine
Filed Mar 9, 2026
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
NHTSA ID
11722865
Incident
Jun 21, 2021
ElectricalEngineFuel system
Filed Jul 4, 2024
4 injuries reported
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.
NHTSA ID
11598820
Incident
Jan 20, 2017
Engine
Filed Apr 29, 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.
NHTSA ID
11585774
Incident
Jan 18, 2024
Mileage
58,299 mi
Driver assistanceEngine
Filed Apr 14, 2023
1 injury reported
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.
NHTSA ID
11517032
Incident
Apr 13, 2023
ElectricalEngineSteering
Filed Mar 20, 2022
Crash reported1 injury reported
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.
NHTSA ID
11457491
Incident
Dec 15, 2016
Body & structureEngine
Filed Sep 18, 2019
MY 2016 SMART CAR AT ONLY 51000 MILES HAD TRANSMISSION FAILURE WHILE DRIVING DOWN FREEWAY ALMOST RESULTING IN CRASH. MY CAR WENT FROM 65 MILES A HOUR, THEN WARNING LIGHT SAID TRANSMISSION FAILURE AND CAR WAS UNABLE TO EXCEL RATE OR BREAK, THE EMERGENCY BREAK WAS THE ONLY THING THAT SAVED ME. MERCEDES DIAGNOSED A WIG WAS ABLE TO FLY UP UNDER CAR AND GET WRAPPED AROUND AXELS, TRANSMISSION, AND BREAK BELTS. THE CAR WAS TOTALED FROM A WIG. THIS IS UNACCEPTABLE THAT THE UNDERNEATH IS LEFT VULNERABLE TO A OBJECT BEING ABLE TO CAUSE SO MUCH DAMAGE, THAT COULD HAVE EASILY RESULTED IN A FATAL CAR CRASH. THIS HAPPENED ON HWY 59 SOUTH HOUSTON, WHILE DRIVING.
NHTSA ID
11256423
Incident
Sep 11, 2019
Mileage
51,000 mi
ElectricalEngineFuel system
Filed Sep 15, 2018
TYSINGER REPLACED THE FUEL TANK ON 08/30/2018. THE CAR HAS HAD PROBLEMS WITH THE FUEL TANK SINCE I PURCHASED THE CAR. THE CAR HAS BEEN MAKING A LOUD BANG AND THEN THERE IS A STRONG SMELL OF SMOKE AFTERWARDS. THIS HAS HAPPENED AT LEAST 45 TIMES SINCE I PURCHASED THE CAR, I THOUGHT THE PROBLEM WOULD GO AWAY, BUT IT HAS NOT. THE CAR STALLS AT RED LIGHTS AND DURING STOP AND GO TRAFFIC, THERE IS A STRONG SMELL OF SMOKE AFTER IT STALLS.
NHTSA ID
11129713
Incident
Jan 1, 2017
Mileage
1 mi
Engine
Filed Mar 28, 2017
Fire reported
TL* THE CONTACT OWNS A 2016 SMART FORTWO. AFTER STOPPING THE VEHICLE, THE CONTACT NOTICED AN ABNORMAL ODOR AND OBSERVED SMOKE COMING FROM THE ENGINE WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE EXHAUST PIPES NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 400.
NHTSA ID
10969003
Incident
Feb 8, 2017
Mileage
400 mi
BrakesEnginePowertrain (other)
Filed Jul 19, 2016
ON STEEP UPHILLS AND WHEN YOU HAVE COME TO A STOP BECAUSE OF A RED LIGHT OR A STOP SIGN, THE ENGINE SEEMS TO BE TOO WEAK TO PUSH THE TRANSMISSION FORWARD AND ACTUALLY THE CAR MY ROLL BACK AND BRAKES GO IN A LOCK MODE WHICH CREATES A BIG SAFETY ISSUE.
NHTSA ID
10885818
Incident
Jun 5, 2016
Mileage
3,500 mi
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.