Terrible MPG LS 500: 15MPG???
It seems to be a common complaint that turbocharged engines have problems meeting the EPA ratings in normal driving, particularly in town. Just a little bit of aggressive driving will result in high fuel consumption when the turbo boost kicks in. This issue is not unique to the LS500.
but fwiw my g90’s ttv6 gives me 21mpg average on 50/50 city highway. and i am not always driving gently either.
the tt pull is just too much fun.
Lead Lap
Joined: Jan 2009
Posts: 611
Likes: 91
From: FL
I took my car on a 200 mile round trip with about 90% highway driving. I kept the speed between 70 - 75 mph on the highway with 4 adults in the car and a full trunk -- got about 31 mpg. The same car gives me about 16 mpg in mostly city driving. I have the panoramic glass roof as well, so that adds another 200 lbs to the weight of the car.
On my previous LS460Ls I used to get about 29 - 30 mpg on the highway.
On my previous LS460Ls I used to get about 29 - 30 mpg on the highway.
Lead Lap
Joined: Jan 2009
Posts: 611
Likes: 91
From: FL
20" wheels. I did not even think that the diameter of the rim makes a difference to mileage. Doesn't that depend on the outer circumference of the tire? As long as its the same, (smaller rims have thicker sidewalls while larger rims have smaller sidewalls with the outer tire circumference being the same) the car should be covering the same distance for every rotation of the wheel.
Instructor
Joined: Feb 2008
Posts: 914
Likes: 70
From: CA
yes, but the wheels/tires are heavier the bigger you go, and the aerodynamics worsen.
Here's an article that explains it well:
https://www.caranddriver.com/feature...-wheels-tires/
Here's an article that explains it well:
https://www.caranddriver.com/feature...-wheels-tires/
Driver
Joined: Feb 2009
Posts: 193
Likes: 5
From: illinois
Intermediate
Joined: Sep 2019
Posts: 262
Likes: 49
From: MS
I'm getting 23 mpg using Sport mode in 55/45 Hwy/City driving. I'm not lead-footing it every take off, but just gotta pass some people. I keep the tires at 35 psi cold. I'm not calculating the mpg, just reading what the display says.
2018 LS 500, 25,000 miles
Last edited by rmbrewer; Nov 14, 2019 at 08:31 PM. Reason: addition
Intermediate
Joined: Sep 2019
Posts: 262
Likes: 49
From: MS
...I get about 17 MPG on regular gas around town using the Eco mode and radar cruise. Premium (what the sticker was based on) will increase my mileage by ~2 MPG but that does not make up for the price markup for premium in Dallas. I find the Eco mode is just fine with the transmission smoothly shifting up into the tall gears to save fuel.../
Pit Crew
Joined: Aug 2014
Posts: 232
Likes: 36
From: TX
I also use a custom drive mode with 'Comfort' Chassis, 'Power' Powertrain, and 'Normal' Climate; however, my settings stay as selected, and are there each time I start the car. Perhaps because those settings were also saved when I saved the custom seat adjustment and position settings?
I'm getting 23 mpg using Sport mode in 55/45 Hwy/City driving. I'm not lead-footing it every take off, but just gotta pass some people. I keep the tires at 35 psi cold. I'm not calculating the mpg, just reading what the display says.
2018 LS 500, 25,000 miles
I'm getting 23 mpg using Sport mode in 55/45 Hwy/City driving. I'm not lead-footing it every take off, but just gotta pass some people. I keep the tires at 35 psi cold. I'm not calculating the mpg, just reading what the display says.
2018 LS 500, 25,000 miles
Intermediate
Joined: Sep 2019
Posts: 262
Likes: 49
From: MS
Instructor
Joined: Apr 2004
Posts: 1,108
Likes: 34
From: California
I also use a custom drive mode with 'Comfort' Chassis, 'Power' Powertrain, and 'Normal' Climate; however, my settings stay as selected, and are there each time I start the car. Perhaps because those settings were also saved when I saved the custom seat adjustment and position settings?
I'm getting 23 mpg using Sport mode in 55/45 Hwy/City driving. I'm not lead-footing it every take off, but just gotta pass some people. I keep the tires at 35 psi cold. I'm not calculating the mpg, just reading what the display says.
2018 LS 500, 25,000 miles
I'm getting 23 mpg using Sport mode in 55/45 Hwy/City driving. I'm not lead-footing it every take off, but just gotta pass some people. I keep the tires at 35 psi cold. I'm not calculating the mpg, just reading what the display says.
2018 LS 500, 25,000 miles
Lead Lap
Joined: Jan 2009
Posts: 611
Likes: 91
From: FL
I also use a custom drive mode with 'Comfort' Chassis, 'Power' Powertrain, and 'Normal' Climate; however, my settings stay as selected, and are there each time I start the car. Perhaps because those settings were also saved when I saved the custom seat adjustment and position settings?
I'm getting 23 mpg using Sport mode in 55/45 Hwy/City driving. I'm not lead-footing it every take off, but just gotta pass some people. I keep the tires at 35 psi cold. I'm not calculating the mpg, just reading what the display says.
2018 LS 500, 25,000 miles
I'm getting 23 mpg using Sport mode in 55/45 Hwy/City driving. I'm not lead-footing it every take off, but just gotta pass some people. I keep the tires at 35 psi cold. I'm not calculating the mpg, just reading what the display says.
2018 LS 500, 25,000 miles