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smart Fortwo check engine light comes on

14 of the 346 owner complaints about the smart Fortwo describe check engine light, most of them for the 2008 model year.

owner complaints
14
worst model year
2008
typical mileage
46,057
Is there a fix? There is 1 recall for this area of the car. See below

By model year

  • 2016
    2
  • 2015
    1
  • 2013
    1
  • 2011
    4
  • 2009
    2
  • 2008
    4

What owners say

Filed Mar 26, 2025 · Electrical, Engine · TX · fire

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

Filed Apr 29, 2024 · Engine · 58,299 miles · VA

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.

Filed Jan 25, 2022 · Brakes, Visibility · CA

Three weeks after got the car from carmax check engine light went on and the after a smell of burning oil every time after driving somewhere. Cruise control failure about a month and half after getting the car, spring shocks in bad condition. Front windshield replaced looks like by the writing on the upper corner driver side (pieces of glass found on the car). Cargo cover missing and no mats.

Filed Oct 16, 2019 · Engine · 126,000 miles · WI

Tl* the contact owns a 2008 smart fortwo. The contact received a recall notice for the federal safety agency campaign number: 18v273000 (engine and engine cooling). Also, the check engine warning indicator illuminated. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and stated that there were no local dealers near the contact. The failure mileage was 126,000. Parts distribution disconnect.

Filed Oct 9, 2019 · Engine · 89,000 miles · NJ

Tl* the contact owns a 2009 smart fortwo. While driving 25 MPH, the contact heard an abnormal noise and the ABS and check engine warning indicators illuminated. The contact received notification of the federal safety agency campaign number: 18v273000 (engine and engine cooling). The contact stated that mercedes-benz of edison (located at 910 us-1, edison, nj 08817, (732) 394-1870) exceeded a reasonable amount of time for the recall repair. The manufacturer was not notified. The part was not available for the repair. The vehicle was not diagnosed. The failure mileage was 89,000. Parts distribution disconnect.

Filed Apr 27, 2017 · Engine · 51,000 miles · CA · fire

I was driving eastbound in the number 1 lane of california highway 24 about 1/4 mile before the tunnel road exit. I heard a noise coming from the engine are of the car, looked at the instrument cluster and noticed that the engine light had illuminated, and experience a sudden loss of power. I pulled off of the highway at the tunnel road exit and stalled on the off ramp. I attempted to restart the engine twice by turning the key. I saw smoke in my rearview mirror, exited the vehicle, and saw flames coming from underneath the vehicle. I called 911 and gave the dispatch operator my location. By the time the highway patrol and local fire department arrived, my car was totaled. The attached photos tell the story of the damage.

Filed Aug 8, 2016 · Engine · 17,881 miles · CA

2008 smart fortwo passion. Consumer writes in regards to vehicle engine light and fuel tank problems. *smd the consumer stated the check engine light illuminated and the vehicle was shaking. The consumer was told the vehicle was not being driven enough and the fuel in the tank was old. Seven months later, the consumer returned to the dealer for the same problem. The dealer stated an inspection at a cost of $414.00 would be needed to determine the problem. After the inspection, it was determined the engine needed to be replaced at a cost of $6,037.

Filed Jun 6, 2016 · Engine · 42,000 miles · FL · fire

Within 20 miles of the "check engine" light coming on, the catalytic converter overheated and set the car on fire, burning the car to the ground.

Filed May 4, 2015 · Engine · 36,200 miles · OH

2011 smart fortwo coupe. Running rough and showing check engine light with obd code p0302. Mercedes-benz dealership found misfire on cylinder #2. Further investigation found cylinder #2 leaking 75%. Removed and replaced cylinder head with a new cylinder head as a "goodwill repair." this particular mercedes-benz dealer has done 14 of these repairs to date. This appears to be a problem with a number of the mitsubishi engines used in the current model smart fortwo.

Filed Mar 17, 2015 · Engine · 46,057 miles · MA

Was driving on the highway when suddenly over heat and check engine light came on, and about 20 seconds later the car loss all power. I almost got hit my the car behind me, but was able to safely pull over to the side of the highway.

Related recalls

Engine and engine cooling: engineReported April 27, 2018 · 42,781 vehicles affected
What is wrong
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2008-2009 smart fortwo cabrio and fortwo coupe vehicles. The rear insulation mat in the engine compartment may deform, deteriorate, and loosen over time, allowing the mat to contact hot exhaust system components.
Risk
If the mat contacts hot exhaust system components, it can increase the risk of a fire.
Remedy
MBUSA will notify owners, and dealers will replace the rear insulation mat with an improved one, free of charge. The recall began in July 2018. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2018060010.

Recall number 18V273000 · Recall details

Questions about the smart Fortwo check engine light

Why does the check engine light come on in the smart Fortwo?

Owners who report it most often also describe fire, smoke or burning smell, sudden loss of power and engine failure, and the codes they mention most are P0302.

Which smart Fortwo years have check engine light problems?

The model years with the most reports are 2008 (4 complaints), 2011 (4 complaints) and 2009 (2 complaints).

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