Thanks. I’m pretty clear on the auto stop/start. You must hit the button or change to sport mode when you get in the car. This is about the same as the auto stop/start in Lexus(LX600).
I can live it. But would look into bummer code to hard shut off the feature if I end up with one.

Is CPO on a 2022 540i worth it over a non CPO if the mileage is under 30k?
It doesn’t seem like CPO is covering that much. No cosmetic even if it’s defect and no coverage on suspension.
I found a CPO 2022 540i but the one of headlamp developed a spider web defect on the lens and they said BMW is not going to cover that and they’re not going to replace it. Since the vehicle passed the certification, it’s being sold as is. This is really surprising and a turn off and makes me question the CPO process.

 

On YOUR car--not on BMWs across the board, as you are presenting it.

I have owned my 3-Series for over 10 years--I know how it works. It remembers the setting from the last drive.

 

The start/stop feature is really a not a big deal, so many have disabled it. As you said, turn it off with Bimmercode. You don't need to disable the feature, just set it to remember the last setting. Now, every time you start the car, it just defaults to whatever it was set to last.

Having owned this generation of 5 series, I would say that its alot closer to luxury to what you had in your LS. It was the nicest car I have ever owned.

 

I've actually gotten to the point of just leaving it enabled most of the time, as it doesn't really bother me.

 

I think the thread title is discussing the M340i, which is new to the G20 generation; prior generations should not be considered. My G01 X3 is almost identical in terms of its systems to our G20 330i that we traded in on it.

And yeah I'm with Frank, most of the time I just don't care enough to turn it off. I will if it is super cold outside, cause I don't like the idea of the engine remaining cold for a long time and repeatedly starting up. I wonder if the starter suffers from continual use as well?

 

We haven't seen elevated starter motor failure rates in cars with a conventional starter and Auto Stop/Start. M340i went to a 48v mild hybrid system with the LCI in 2023, so in effect it now has an 11hp starter motor. Starting an engine is absolutely nothing to it.

 

Yeah I guess that's true that mild hybrids pretty much do not have this concern. I wonder about how our X3 will hold up over time, since it is conventional/no mild hybrid.

 

A hot engine is much easier to restart, if the contact was upgraded to compensate for more cycles it should be totally fine. Usually the contacts are what die on starters not the gearset/bridge/motor

 

Like Striker said, it typically hasn't been a problem. Our 2018 Q7 seems none the worse for wear after hundreds of thousands of start cycles over the 7.5 years we've had it.

 

92K miles on my 328, a vast majority of those miles with the stop/start active. No issue.

 

My only personal gripe with start/stop from a mechanical standpoint is I can't tolerate oil psi going to zero. It will always induce boundary lubrication conditions if pressure stops and that will always cause some wear and I don't like that.

Will it matter? Probably not for most drivers and owners and the case can be made if you drive for 150k miles the gas savings will pay for a new engine if yours dies.

Same sort of math that makes my "cheap" Jeep actually cost over $30k due to fuel used this last 135k miles vs something a little less reliable but gets more than 13.7 mpg over this same timespan. I could have easily afforded a blown engine in anything that got over 20mpg and still been ahead

 

Stop/start on the BMWs I have had were not bad at all and I didn’t even turn it off when I had the M340 or X7. It was very unobtrusive so that wouldn’t be a big deal to me.

On my Porsche and Hyundai, the implementation is terrible so I have to turn it off every time I drive, kind of a PITA.

 

start/stop is one 'feature' that will drive me away from ice cars that have it. it's not the end of the world, but it detracts from the ownership experience imo.
with a hybrid of 48v system it's not as bad, but still noticeable.

there must be a loophole in the law to not require it on some cars as the lc500 doesn't have it. (yay)

 

Back in 2013 I purchased a 2012 BMW 3 Series wagon (last one with a straight six) that was a CPO with 5K miles.

After I had the car for a few days, I realized it was missing the tool kit and the cargo cover. (so much for their 196 point inspection)

The dealership had to order a new cargo cover because they couldn't find the original at a cost of $1,100 and also a new tool kit.

The sales guy had to drive two hours round trip to deliver them to me.

I lost all respect for CPO programs.

Having said that, that BMW was a great car and never had any problems.

A straight six in a 3 Series is awesome.

 

I don't think there's a law requiring it at all, so no need for a loophole. It's an optional tactic to help achieve average fuel economy across a manufacturer's vehicle fleet. Given that the LC is (by design) a low-volume model, a marginal increase in fuel economy probably doesn't move the needle for Toyota.

There are certainly rules about how auto start/stop must function IF It is used, in order to get credit for the mpg improvement. Those are designed to prevent it from being included in an intentionally ineffective manner as a hand-waving exercise.