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Discussion Starter #1
So, for me its now 20 years since have A SMART, but of course only a little over 10 years now with this red fortwo passion in the USA. With only 58K miles on it, you can see it doesn’t see a ton of annual driving, but shes driven pretty hard on a 70mile RT commute up and back to the city 1-3 days a week. Lots of around town and local driving.

The last service I did was at 42K (2.5 years ago), it was technically a 30K service I think, which included plugs, new pads, rotors in the front turned, and oil/filter/lube inspection.

Now, I know I have to have SOME services done, but I don’t know if the 60K service fits into the best option or a combination service should be done? I’m looking for insight from the community about what works best (adds the most value for mostly maintenance and extending life). vs. any performance benefit. Frankly, this is the only car I have ever had that I haven’t stayed current with more regular service. Thankfully, it’s been rather problem free and performed well for solid highway speeds (80+) and predictable around town driving. I MIGHT keep in another few years as it is really great for parking up in the city (San Francisco) and around town. And it stills get about 38-40 mpg for highway driving.

So, WHAT service should be done? I have a quite good local service depot that works on mercedes, smart, porsche, etc, so I’m comfortable taking it to them for services. Or, is it a MUST to have something more involved done by a dealer?

I know it has a never had the transmission fluid flushed. Or at least it wasn’t done in the 30K service (at 42K) and I don’t think it was done prior. Should this just be done as a best practice? lately, I have been hearing a small whine at constant speed around 35-40 mph.

It had plugs in the recent service, so maybe not that?

There is this rather open question about checking the VALVES, which seems to involve significant shop effort and maybe has been removed from the recommended list by smart? Is that something required or REALLY encouraged?

And then there is a belt that might be replaced? Is it just REPLACE it regardless or inspect and replace if needed?

What about the four corners? Car still handles fine, I don’t find any softness at any one corner over another? I don’t see this update on really ANY of the scheduled services, other than inspection?

At 10 yrs. now, what have others seen that has gone south on the chassis, support struts, suspension, or other areas?

I’m really most interested in transmission, valves and belts? I wonder if I can bundle this with OIL/FILTER/INSPECTION and bang out enough stuff to get me confidently 2yr/15k down the road?

Thanks in advance for any and all feedback! I think as more and more of us approach the 10 years milestones on these original cars this should be a good thread to reference for others.
 

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Discussion Starter #2
So, should I have put this in the 450 operation and maintenance area? If so, Mod could you move it so I don't end up cross posting?
 

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A 2008 carries the chassis code of W451, so the W450 forum would be inappropriate. That said, you posted this in the smart General Discussion area, which is fine..I think.

My 2012 is at about 143,000 miles now. I never got the valve check. So far as I can tell, if you’ve made it to 60k without engine issues, your valves are probably okay. I will say that smarts that see the full range of their rev counter being used seem to end up being healthier smarts down the road, so there’s that too.

Due to its price, I’d say the valve check is more of a “peace of mind” check than totally necessary. Though if you don’t mind the cost, it doesn’t hurt to have a peace of mind.

One thing you should change now or at least before you hit 100k is the flat belt (alternator belt). Once it starts degrading, it goes pretty fast. Mine literally snapped off at approximately 105k. I got a Merlin shop to replace it so I can use their neat warranty.
 

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Discussion Starter #6
Thanks for the tips.. I think as things SEEM to be running fine, I'll skip the $$ valve work for now.

I'll probably try and get my mechanic to quote me on
oil / filter
flat belt replacement
MAYBE do a transmission flush - its seems to be running a tad rougher than I recall - is this a recommendation or a risk to flush tranny fluid?

I'd like to have the front axle ball joints and boots checked and the steering mechanicals. I don't find any place per se, but I have a feeling that things at the front corners are a tad less TIGHT than they were 3-4 years ago. Is this a common wear point?

Maybe get plugs done, they were last done 3 years and 17K miles ago.

Maybe get coolant replaced

Anything else? Hopefully, I can keep that to under 400$ or so. Putting more in doesn't really work for me at the moment.
 

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[snip]

MAYBE do a transmission flush - its seems to be running a tad rougher than I recall - is this a recommendation or a risk to flush tranny fluid?

Maybe get coolant replaced

Anything else? Hopefully, I can keep that to under 400$ or so. Putting more in doesn't really work for me at the moment.
The smart transmission usually does not need fluid (gear oil service). If you do have it done, the process would be a drain and fill, not a flush.

Find a mechanic that knows how to do a coolant change on a smart.
 
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