GLE450e Tire pressure
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Joined: May 2018
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From: Long Island, NY
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
The additive package in premium fuels is superior - that alone leads me toward the extra expense, since I expect to keep the car for 90k miles at least.
I also go out of my way for Shell, because I get better MPG (+2 is normal) and seat of the pants performance. (Shell is getting out of the gas station business, according to a retired Shell engineer I know - drat.)
If I have a loaner car that I have long enough to run through a full tank there is a MORE THAN SIGNIFICANT difference when I fill its tank with Premium. It's like a different car altogether.
It does net out to about $60/1000 miles increased cost, but I've made a big investment in the car and I want to take care of it. (At current prices.)
I also came from Depression Era parents, but I save my money by paying saving up to make a cash purchase, and giving my steed the best care possible. My Depression Dad adopted my practice when he saw how long my cars last. My best - 700,000 miles - an FJ45 Land Cruiser pickup, 1 of less than 500 solid new in the US.
I also buy the best paint for my house and skip the builder-grade flooring, but that's just me.
I also go out of my way for Shell, because I get better MPG (+2 is normal) and seat of the pants performance. (Shell is getting out of the gas station business, according to a retired Shell engineer I know - drat.)
If I have a loaner car that I have long enough to run through a full tank there is a MORE THAN SIGNIFICANT difference when I fill its tank with Premium. It's like a different car altogether.
It does net out to about $60/1000 miles increased cost, but I've made a big investment in the car and I want to take care of it. (At current prices.)
I also came from Depression Era parents, but I save my money by paying saving up to make a cash purchase, and giving my steed the best care possible. My Depression Dad adopted my practice when he saw how long my cars last. My best - 700,000 miles - an FJ45 Land Cruiser pickup, 1 of less than 500 solid new in the US.
I also buy the best paint for my house and skip the builder-grade flooring, but that's just me.
I note you drive a GLC300. There is a world of difference between the 4 cylinder in your car and the V6 twin turbo in my E450: I have driven the GLC 300 as a loaner to Vermont and back for skiing. Assuming it had premium when I picked it up, I then refilled it with regular and could not notice any difference.
House paint: Here there is a noticeable difference and I agree I buy the best paint I can. The difference is $10 a quart, 9 quarts, $90 and the paint can last 7 to 9 years instead of 3 to 5 years for the cheaper paint so in the long run it is cheaper. (labor is the big expense, not the paint and labor is the same whether you are using cheap or expensive paint)
Assuming 10K miles per year and 20 mpg, that is 500 gallons per year. Using premium at $.80 more per gallon, that is $400 more, 5 years $2,000. If you feel the performance and extra mpg is worth it, go for it. But $2000 over five years is a different world than $90 for painting a house!
Just my $.02
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Joined: Oct 2009
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From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Everyone makes their own decision.
I note you drive a GLC300. There is a world of difference between the 4 cylinder in your car and the V6 twin turbo in my E450: I have driven the GLC 300 as a loaner to Vermont and back for skiing. Assuming it had premium when I picked it up, I then refilled it with regular and could not notice any difference.
House paint: Here there is a noticeable difference and I agree I buy the best paint I can. The difference is $10 a quart, 9 quarts, $90 and the paint can last 7 to 9 years instead of 3 to 5 years for the cheaper paint so in the long run it is cheaper. (labor is the big expense, not the paint and labor is the same whether you are using cheap or expensive paint)
Assuming 10K miles per year and 20 mpg, that is 500 gallons per year. Using premium at $.80 more per gallon, that is $400 more, 5 years $2,000. If you feel the performance and extra mpg is worth it, go for it. But $2000 over five years is a different world than $90 for painting a house!
Just my $.02
I note you drive a GLC300. There is a world of difference between the 4 cylinder in your car and the V6 twin turbo in my E450: I have driven the GLC 300 as a loaner to Vermont and back for skiing. Assuming it had premium when I picked it up, I then refilled it with regular and could not notice any difference.
House paint: Here there is a noticeable difference and I agree I buy the best paint I can. The difference is $10 a quart, 9 quarts, $90 and the paint can last 7 to 9 years instead of 3 to 5 years for the cheaper paint so in the long run it is cheaper. (labor is the big expense, not the paint and labor is the same whether you are using cheap or expensive paint)
Assuming 10K miles per year and 20 mpg, that is 500 gallons per year. Using premium at $.80 more per gallon, that is $400 more, 5 years $2,000. If you feel the performance and extra mpg is worth it, go for it. But $2000 over five years is a different world than $90 for painting a house!
Just my $.02
My cost estimate is for my GLE53, figured at about 22mpg. (from my post above, "It does net out to about $60/1000 miles increased cost, but I've made a big investment in the car and I want to take care of it.") That would be $6000 more over 10 years for me - more than your estimate.
I also buy premium Tires, $800 per 15-20k miles - another $6000 over 100k miles.
(BTW the extra material cost for my house paint is a couple thousand $$, but the labor is less because of coverage and ease of application. I hope you meant Gal instead of Qt!
It looks better longer.)
If I leased a car and considered it a throwaway device, cheap gas with -2mpg and less performance, I might choose differently.
Yes, personal choice.
But I'm not spending $1,200 on a new iPhone every other year. (That same $6000 over 10 years.)
Super Member
Joined: Oct 2022
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X214
For a Turbo-charged engine (where the air is already compressed via the forcefeeding, prior to entering the cylinders), 10:1 is really high. Significantly higher overall compression, than the 11.5:1 in a Normally aspirated engine.
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X214
Please note that I stressed the "Normally aspirated" part, when I stated that 11.5:1 compression ratio is high.
For a Turbo-charged engine (where the air is already compressed via the forcefeeding, prior to entering the cylinders), 10:1 is really high. Significantly higher overall compression, than the 11.5:1 in a Normally aspirated engine.
For a Turbo-charged engine (where the air is already compressed via the forcefeeding, prior to entering the cylinders), 10:1 is really high. Significantly higher overall compression, than the 11.5:1 in a Normally aspirated engine.
MBWorld Fanatic!
Joined: May 2018
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From: Illinois
2021 c300 Cab. Arrived 7/28/21 . 24 GLE 450e.
Same thing is in my manual.
I never go over 2500 RPM and never drive my car hard. In fact my individual settings are: steering sport; ride comfort: engine economy
The reason why I own a $75K car and put regular gasoline in is quite simple: My parents were of the depression era. I heard how hard it was, how rich and poor lost everything. It was drilled into me to have no debt and wherever possible save money. I still wash my own car rather than pay $30 to the car wash, change my own oil for $60 rather than pay $225 to the dealer: This is way I am built.
Just my $.02
I never go over 2500 RPM and never drive my car hard. In fact my individual settings are: steering sport; ride comfort: engine economy
The reason why I own a $75K car and put regular gasoline in is quite simple: My parents were of the depression era. I heard how hard it was, how rich and poor lost everything. It was drilled into me to have no debt and wherever possible save money. I still wash my own car rather than pay $30 to the car wash, change my own oil for $60 rather than pay $225 to the dealer: This is way I am built.
Just my $.02
Newbie
Joined: May 2025
Posts: 1
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2025 GLE 450e
2025 GLE 450e tire pressure warning
My tire pressure warning just came on. I have 21” tires and it shows 42 for each front tire and 42 and 43 for the back.
Fuel cap shows 35/36 for normal load and 38/51 for maximum load.
What should the pressure be?
I’m confused….
Fuel cap shows 35/36 for normal load and 38/51 for maximum load.
What should the pressure be?
I’m confused….
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MBWorld Fanatic!
Joined: Oct 2019
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From: Colorado
G550
Why have you over-inflated your tires by so much? Are the fuel flap specs for a different tire size?
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MBWorld Fanatic!
Joined: Oct 2009
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From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
The feds have made it overly complicated.
As you say, use the gas flap as correct pressures for your car.
In all cases, though, reset the pressures in the instrument cluster under the "Trip" menu.
That way the op knows when it is deviated from his chosen pressure.
MBWorld Fanatic!
Joined: Oct 2009
Posts: 6,987
Likes: 2,187
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
MBWorld God!
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A lot of people mistakenly use the doorpost as the correct inflation pressures.
The feds have made it overly complicated.
As you say, use the gas flap as correct pressures for your car.
In all cases, though, reset the pressures in the instrument cluster under the "Trip" menu.
That way the op knows when it is deviated from his chosen pressure.
The feds have made it overly complicated.
As you say, use the gas flap as correct pressures for your car.
In all cases, though, reset the pressures in the instrument cluster under the "Trip" menu.
That way the op knows when it is deviated from his chosen pressure.
MBWorld Fanatic!
Joined: Oct 2009
Posts: 6,987
Likes: 2,187
From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Which is fine, but it adds another layer of complexity unless you are familiar with it.
Which you wouldn't be, if you came from any other brand of car!
Unless you RTFM.
So it's kind of "our little secret," and there's a secret handshake. But I'm not giving away the secret handshake. Not me. I'm sworn to secrecy.
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To my knowledge, only Mercedes goes the extra step to analyze and recommend pressures for your specific build.
Which is fine, but it adds another layer of complexity unless you are familiar with it.
Which you wouldn't be, if you came from any other brand of car!
Unless you RTFM.
So it's kind of "our little secret," and there's a secret handshake. But I'm not giving away the secret handshake. Not me. I'm sworn to secrecy.
Which is fine, but it adds another layer of complexity unless you are familiar with it.
Which you wouldn't be, if you came from any other brand of car!
Unless you RTFM.
So it's kind of "our little secret," and there's a secret handshake. But I'm not giving away the secret handshake. Not me. I'm sworn to secrecy.
they could use the digital manual and the search in the car but they like to ask online instead. Say for instance a software licensing agreement, windows software agreement is like 50? pages, who reads that people just accept and move on.
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From: Colorado
'21 AMG53 wDPP & ARC, 19 GLC300 - Former-03 C240,2 ML BlueTecs,20 GLE450 E-ABC,15 Cayenne D,17 Macan
Also in the Mercedes me app without the ability to bookmark as far as I know.
Half the manual is warnings, precautions and otherwise useless print.
It would be 1/3 the size if they made it country-specific, and their lawyers weren't so paranoid.
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I do too. Which you can do in the car, including links to appropriate paragraphs and the ability to bookmark.
Also in the Mercedes me app without the ability to bookmark as far as I know.
Half the manual is warnings, precautions and otherwise useless print.
It would be 1/3 the size if they made it country-specific, and their lawyers weren't so paranoid.
Also in the Mercedes me app without the ability to bookmark as far as I know.
Half the manual is warnings, precautions and otherwise useless print.
It would be 1/3 the size if they made it country-specific, and their lawyers weren't so paranoid.
