Reliability of 2022 GLB 250 ?
2020 is the first model year. I usually try to buy MBs that are late in the model class as they work out of a major issues in the first year two. There are some crazy stories I've read about these engines needing head replacements, throwing rods, etc at 30k miles so that has me a little concerned as my car will be long of out warranty by the time I get to that mileage with my driving habits. Who knows, maybe I'll move onto something else before then. Overall, it's been a decent car in the 8 months or so that I've owned it. I will say the build quality isn't as good as the other models as the GLB is an entry level model. The fit and finish just isn't as good as the German-made cars. For me, that wasn't a huge deal. It's not my only MB and for a daily driver it's just fine for me.
Owning an MB out of factory warranty is risky business.
During the warranty period, financial risk is reduced, replaced instead by aggravation and wasted time to deal with MB’s poor quality and reliability.
Last edited by Serhan; Oct 11, 2022 at 08:32 AM.




-2003 E320 3.2 L V-6. Totaled at 186,000 miles and it was reliable enough that I was going to restore it and keep it.
-2005 ML350 3.7 L V-6. Nothing until after 150,000 miles. Then front half shaft bearings, fuel pump, power steering pump. Not has reliable as E320. Traded at 187,000 miles.
-2013 C250 1.8 L I-4. Camshaft adjusters at 75,000 miles. MB paid under extended warranty. Still driving it at 100,000+ miles. The timing chain was a known owner service item at around 100,000 miles.
-2015 GLK350 3.5 L V-6. Totaled at 155,000 miles. Nothing broken ever.
-2021 GLB250 2.0 L I-4. Compression leak at 28,000 miles. Head replaced by MB under warranty. Still driving it. Time will tell.
Small sample, but the common factor for me is I-4 turbo engine. The V-6 vehicles were solid performers. The I-4 ones failed early. None of them caused much of an issue except bringing in for service because we either got a loaner or doubled up use on the second vehicle, and Mercedes paid for the repairs.
It looks like if you pick a line with known long term reliability, you’ll be happy. If you pick one with less of a history, maybe, maybe not.
The downside with the 3.0L inline 6 is that it has not been offered without the failed 48V system, which is to be avoided.
The 4.0L V8 without 48V system seems to have been available in W205 C63, W213 E63 and W222 S560 models. These are a far cry from the GLB.
Summary: MB engines in generally are dubious, with four cylinder engines standing out as lacking an example with a long reputation for reliability. Strong "do not buy" for any vehicle with a 48V system.
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In general Luxury brands are not as reliable as Non Luxury brands. Even Toyota models are more reliable than Lexus models, even though they are essentially the same cars.
I also doubt that car made in Korea is more reliable than one made in Mexico.
Personally I would not own any Luxury brand outside warranty. I even had extended warranty on my last two non luxury brands (Toyota and Honda), since newer cars continue to add more and more computer and electronic components, that tend to have issues.
The Best of Mercedes & AMG
The reliability probably went down on MB models over the years due to possibly moving towards small high compression ratio 4 cylinder turbo engines (forced by need to comply with Governmental emission and gallons per mile regulations) and adding all the electronic components (everybody wants to have an Ipad in their cars, including myself
). However everything you complained about in your post is subjective observation/expectations and have nothing to do with reliability of the car. P.S. What are the chances of new 2023 C63S 4-cylinder 2 Litter engine, that produces over 400HP not having any issues in the future?




I thought the ride was nice, quiet, comfortable. So, I’ve ordered an EQB and I test drove that a few weeks ago. Even better.
MB will stand behind a problem like the catastrophic failure of a blown cylinder - that won’t continue to happen on the models after they realize the failure.
Software glitches are not restricted to MB - and Honda has their problems too.
I don’t think anyone who buys a Mercedes does so expecting higher reliability and lower cost than a Camry or Accord. They are buying in large measure in aesthetics and perceived comfort and luxury. Let’s face it, the seat is one of the most important things but you don’t read much talk about seats in car reviews in Car and Driver and other things. For me, the Toyota and Honda seats are not comfortable. The GLB is not as comfy as the E or S class. Or a Bentley. But it’s way more comfortable than a Malibu and way more comfortable than my 2011 328i
If all of the above complaints could not be perceived on test drive, then sell the car as it is not your car. That one is probably bogus. But a really good test drive should reveal to the discerning buyer these things.
Side mirrors: the glare from cars at night is almost impossible to avoid without making adjustments to mirrors. I don’t know when the industry is going to say, “ok! Too much bright is too much. It is like they are all trying to out LED and Laser the competition- we don’t need Phasers to clear the road ahead of us. So, politely, if you are complaining about night glare on your GLB, you are looking for things to complain about.
Good fortune to you in finding your next car - enjoy the Telluride.




Then the haters jumped in. Some of them don’t even own a GLB. Some of them have thousands of posts because they reply to everything whether they have anything useful to offer or not. So goes social media.
I guess that we’ll hear next from Scotty “Never Buy A Mercedes” Kilmer.
This thread is dead.
I know what you mean about the back seats. They are stiffer to be sure, but with the sliding feature, very roomy. Your reply was super helpful as I sit and wait for an EQB while simultaneously reconsidering a slightly/new wagon (at a total ownership cost point that keeps me waiting for the EQB)
As with every purchase, there are tradeoffs!
E-Class is a step away from the most luxurious mainstream luxury sedan, the S-Class. GLB is a step away from the cheapest economy car MB produces.




You mention BMW. Well, if there is some thing out there that makes a Mercedes look reliable, that's it. Our 335i cabriolet was clearly the most driver oriented car and the most fun to drive that we ever had. And it was a reliability nightmare. When it wasn't in the shop, it was great. But after warranty, everything broke: suspension, air induction system, emission controls, battery management system, interior controls and switches, folding roof mechanism. My grandson was so anxious to get rid of it that he swore off anything sporty and bought a 4WD American pickup. Two neighbors had 5 Series sedans. One now owns and Honda and the other a Toyota.










