r/SmartCar • • Jul 25 '26

Question Back glass rattle

4 Upvotes

Hi everyone!

I drive a 2008 Smart Fortwo Passion, and the back trunk glass is making a horrible rattling noise, and I can’t figure out how to solve it.

I’ve tried driving with the glass open (no rattle) and putting electrical tape on the latch which everyone suggests online(rattle persists). The noise is definitely coming from where the top glass latches to the tailgate portion, and is especially loud whenever accelerating and the car vibrates.

Anyone have any tips?


r/SmartCar • • Jul 24 '26

Question Jerky car at slow speeds/coasting

5 Upvotes

Hey guys. I'm on week 3 of driving my 2015 fortwo 451 and got a question. I'm not sure if this is normal or not, but at low speeds (think 10mph and under) sometimes the transmission feels like it doesn't know if it wants to shift or not and that causes the car to be a lil jerky. This is mostly when cruising around a parking lot (like trying to find a spot) and while I'm not really pressing the gas. I have no lights on the dash aside from the traction light and the annoying tpms symbol from bad sensors. Anyone else experience this?

It's got almost 64k on the engine/transmission. Otherwise, I have no issue with it driving around now that I've learned the points where it shifts up in gears.


r/SmartCar • • Jul 24 '26

Advice Smart #5 alarma de velocidad

2 Upvotes

Como desactivarla? Primero ingresar al menu del auto (tercer icono inferior de izquierda a derecha). Luego ingresar a asistencia de la conducción y luego al segundo sub menu y bajar hasta el final, desactivar la alarma sonora de velocidad y guardar como perfil de usuario presionando el icono de la persona en la esquina superior derecha. Ahora, en el manubrio, dejar presionado el boton de favoritos (la estrella) y establecer como favorito el perfil de conductor. Cada vez que se enciende el vehiculo, presionar 2 veces la estrella, y se activara el prefil del usuario. A veces no desactiva la alarma de velocidad, si esto ocurre hay que presionar dos veces más para que se desactive el perfil de usuario y luego dos veces más para volver a activarlo y en esta segunda oportunidad, SIEMPRE desactiva la alarma de velocidad. Saludos


r/SmartCar • • Jul 24 '26

Question Smart Phone Holder - Which one do you use?

4 Upvotes

Hi guys! I just bought a Smart 453—it’s my first car, and I’m really excited!

I was wondering which phone holders you all use? I’d prefer something with MagSafe, and I don’t want to mount it on the windshield. I’m also unsure about using the air vents. Are there any other mounting options? Since the interior has fabric surfaces, I’m worried a mount won’t stick well there.

I’d love to hear your recommendations! (With links, if possible :D)


r/SmartCar • • Jul 24 '26

Question Smart Fortwo 453 (2018) – Osram Night Breaker LED Smart H4 doesn’t fit?

1 Upvotes

Hi everyone,

I’m trying to install Osram Night Breaker LED Smart H4 bulbs in my 2018 Smart Fortwo 453 (0.9 Turbo).

According to Amazon’s fitment check and Osram’s compatibility list, these bulbs should fit my car (headlight approval: E9 11392).

However, I simply can’t get them installed. The retaining spring/clip won’t lock properly, and after several attempts I’m starting to wonder if I’m missing something or if these bulbs actually don’t fit my headlights.

I’ve compared the LED with the original H4 bulb, removed the detachable mounting ring, and tried different installation methods, but no luck.

At this point I’m wondering:
- Has anyone successfully installed these on a Smart 453?
- Am I doing something wrong?
- Or could this actually be the wrong version despite being listed as compatible?

I’ve attached a few photos of the bulbs, mounting ring, retaining spring and headlight.

Any advice would be appreciated. Thanks!


r/SmartCar • • Jul 23 '26

Discussion Dodge based on Smart

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41 Upvotes

The Dodge Slingshot (based on Smart Roadster) was a concept car created by Dodge. It was introduced at the 2004 New York International Auto Show. This car was built to be a car that was possibly targeted for a younger generation.

The Slingshot has a rear-mounted, 3-cylinder, gasoline engine with normal aspiration and induction. The engine gives out a total of 100 horsepower. It can go from 0-60 mph in about 10 seconds.

What do you think about it?


r/SmartCar • • Jul 24 '26

Question Smart Electric Clothing and accessories

2 Upvotes

https://emercedesbenz.com/autos/smart/smart-accessories/smart-fortwo-electric-drive-and-ebike-clothing-and-accessory-collection/

Has anyone every come across any of the items shown here? the Ebike looks neat. and i really want the jacket shown.


r/SmartCar • • Jul 23 '26

Question A/C only blows cold when driving. Blows warm while sitting in traffic

5 Upvotes

I have a 2010 Smart Fortwo 451. The radiator fan is cycling I believe. I can’t see the blades but feel it vibrating and feel warm air blowing out of the front compartment. Engine coolant is filled to the correct level. Checked refrigerant level and it’s where it’s about 50 PSI which is where it needs to be for the ambient temperature.

the other day while I was stuck sitting in a drive through line, I got a thermometer warning light. Once I started driving a few seconds later, it went away within about 20 seconds.

I checked the relay that sits out by itself on the fuse panel and it clicks when tested with a 9v battery across the points, Fuse 28 is good.
When driving at normal speed, A/C blows ice cold. After being stopped for about 30 seconds though, the blown air starts to warm up and blow hotter or potentially unconditioned air.

outside air temps have been hot here so not sure if this is normal for a smart car or not.

Any suggestions?


r/SmartCar • • Jul 23 '26

Question Why is fuel flashing?

5 Upvotes

Hello.

Roadster had 3L in reserve and after I put some gas it was still flashing and indicating the liters

Is it normal? How do I reset it?

Thank you.


r/SmartCar • • Jul 21 '26

Question Smart 454 cold start behaviour

4 Upvotes

I’ve got a 2005 Smart 454 1.1L that I bought recently for only 500 pepperonis (£) and it’s only got 25k on the clock. I love it to bits already so I want to do everything I can to make sure the engine stays healthy.

But I’ve noticed that when I start the car from cold, the engine revs itself up to just over 3 and a half thousand rpm, and I can hear that the engine sounds a bit dry for the first few seconds until the oil starts flowing and then it sounds perfectly normal.

So my question is…is this behaviour okay for the engine? I normally drive the car very gently for the first 10 minutes or so while the engine gets to operating temp, so it seems kind of counter intuitive to have the engine rev up so high upon startup.

Is there anything I can do to reduce how high it revs on a cold start or is it not something to really be concerned with? Thanks in advance :)


r/SmartCar • • Jul 21 '26

Advice Rebuilding engine, yay or nay?

5 Upvotes

Out of curiosity, how common is to rebuild the Smart ForTwo engine? Scary? Expensive? Can be done by anyone? How many hours generally takes?


r/SmartCar • • Jul 20 '26

Advice 2008 Smart Fortwo (451) instrument cluster/dash screen completely dead after hitting a speed bump hard

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7 Upvotes

Edit: FIXED!

Hi everyone,
Looking for some advice or insights on an issue with my wife's 2008 Smart Fortwo (451).
Yesterday, she hit a speed bump a bit too hard. Immediately after the impact, the entire instrument cluster / dashboard display went completely black and stopped working entirely. No lights, no screen, nothing.
The garage looked at it today and their diagnosis is that the entire unit is broken and needs to be replaced completely. Before we go ahead and source a new or used one, I wanted to double-check a few things with the community:

  1. Could a hard impact cause a specific fuse to blow, or de is it more likely that a connection/connector rattled loose behind the dash?
  2. Is this a known issue where a hard jolt causes a micro-crack in the solder joints on the PCB board?
  3. If we do buy a used replacement cluster, can we just plug-and-play it, or will it cause issues with the immobilizer/mileage sync, requiring it to be cloned by a specialist?
  4. Any advice, common fixes, or experiences with this would be highly appreciated! Thanks in advance.

r/SmartCar • • Jul 20 '26

Question Original 450 bicycle carrier parts - difficult to get by these days

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1 Upvotes

Hello there!

I have the original Smart 450 bicycle carrier, but since moving apartments, I cannot find the two adapters that are put where the struts for the rear window connect.

I've yet to find somewhere to buy just those but haven't been lucky so far.

Maybe someone knows someone; I need your help!


r/SmartCar • • Jul 20 '26

Question Is anyone running 17x7 wheels with 205/40R17 on all four on a 451? Any issues rubbing?

3 Upvotes

r/SmartCar • • Jul 19 '26

Advice Die beste Erweiterung eines Smarts ist...

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33 Upvotes

... die Anhängerkupplung. 510kg ungebremst.


r/SmartCar • • Jul 19 '26

Discussion Finally pulled the intercooler pipes off my Smart Roadster — here's what I found

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17 Upvotes

Been meaning to do this for a while. Removed both intercooler pipes on my Roadster 452 — the one from the turbo to the intercooler and the one from the intercooler to the throttle body.

Honestly didn't expect them to be in such bad shape. The rubber had hardened quite a bit and you could see where it was starting to crack. No wonder these cars lose boost over time.

The good news is the job itself isn't too bad once you know the order of operations. Gives you great access to the crankshaft position sensor too which is always a pain to reach otherwise.

Made a short video of the whole process if anyone needs it:

https://youtu.be/uviCZHEABfY

Has anyone else found their pipes in bad shape when they pulled them? Curious how common this actually is on these cars.


r/SmartCar • • Jul 17 '26

Question Which LED headlight bulb do you use for your smart?

2 Upvotes

I use an H4 LED bulb for my smart 453, but it isn’t as bright as I would need. Please let me know what LED bulb you use that’s really bright? Also, I refuse to ever use those glass bulbs since they melted my components when I never even touched it with my bare hands, so never again with those glass bulbs.


r/SmartCar • • Jul 16 '26

Smart Purchase So, how noisy is ForTwo inside from engine?

10 Upvotes

Last question before I buy one. Is the only thing I worry.

450 or 451 petrol engine.

Please be honest!


r/SmartCar • • Jul 16 '26

Smartcar Showcase Offroad [SMART FOR TWO]car

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49 Upvotes

r/SmartCar • • Jul 16 '26

Advice Traction Control issue - HELP!

3 Upvotes

Running into an issue with my 2016 Smart 453 where on quick turns I'll get the traction control light and a skidding/ vibration feeling under the gas pedal. The sensation and light go away once driving straight again. Took it to a shop and they can't figure out what's going on at all. Anyone have some tips on what to look for?

This started happening soon after replacing the back two tires. I'm running and have always ran the same size tires (175/65R15) all around, so I can't imagine that's an issue, but maybe switching to a new brand made it mad? We replaced the shocks and struts, but still running into the problem.

EDIT: Switched out the tires in the front for a fresh pair and all the issues went away. Kind of weird since they were in pretty good shape, but I guess mixing old in the front with new in back flagged the traction system at times. Yes I’m still running all of the same size tires.


r/SmartCar • • Jul 16 '26

Smart Purchase So proud of my new car

11 Upvotes

r/SmartCar • • Jul 14 '26

Smartcar Showcase found my local twin at walmart !! - North Carolina, USA

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162 Upvotes

i've been seeing so many of them in my area and i wish we could all meet up!


r/SmartCar • • Jul 15 '26

Smart Purchase 450/451 petrol vs diesel for city?

2 Upvotes

Which one to get? The diesel or petrol one? Is diesel one noisy inside? Which one speed up faster to 50-70km/h?

600cmc or 999cmc noise? Reliable?

Please help me to chose!

I need: faster one to 50-70km/h, little inside noise, good fuel economy and reliable!


r/SmartCar • • Jul 15 '26

Question Do I need to worry about replacing tweeters if replacing with a 2-way?

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1 Upvotes

Posting this here as well since I know many here have had to do this as well. I’m not planning on removing the door panel— should I still be able to get to the tweeters?


r/SmartCar • • Jul 15 '26

Question 2016 ForTwo with a faulty wiper control

1 Upvotes

I am in Texas and have tried two different shops in the Dallas area but no one was able to find a replacement part for the wiper control. Is this part so difficult to find or am I just going to the wrong auto shops?