[DekTLX]

Wheel size can make a difference in fuel economy for sure. I've converted to America units for you guys. So far in the city I'm averaging 10.2 L/100 km (23 MPG) on my new-ish 2016 SH-AWD TLX. On the highway, I've managed to maintain 6.7 L/100 km (35 MPG). Keep in mind Alberta is pretty flat. As my car breaks in it might even improve, which is crazy! All calculations were done manually. The computer is quite accurate if it's a longer trip. The shorter the trip, the less accurate it is.

 

[crack-kitty]

I've been using Fuelly since the first week of Jan this year (6 fuel ups as of this post)... I'm going to hold off on a specific summary report of "I'm getting X mpg overall" until I have more data. I think, relatively, I drive a lot (picked up the car on 12/12/15, I have driven ~4600 miles so far. I tried one full tank on econ mode, that will def be my last (as others have said in this and other threads... econ doesn't seem to do much... I "might" try it on a long trip just to see, but city driving wasn't fun and didn't seem to help with mpg).

The reason for the post today however is I just wanted to report that I drove 170 miles this morning after filling up with 91 octane (Sunoco) and driving in normal mode (I have V6 Tech, PAWS). 36.1 mpg with cruise set at 72mph (pretend like that's legal speed here in NY). The trip odo says avg speed was 67mph, though ~165 of those miles were highway (slowed to 55 for a construction zone, and 2 lights getting to the highway and 2 lights getting to my office). I think that's pretty darn good.

Anyway, I'm not quite as detailed as Gonzo... but... I might start to be!

Also, I have been switching between 91 and 93 octane gas (some stations around here don't have 91) and I haven't noticed 'much' difference, though I haven't tried a controlled test (which I will do soon since today's 170 mile trip I typically do 2-6x per month... 1-3x round trip). My old 2005 TL got fed almost exclusively 93 octane for about 150,000 of it's 180,000 mile life before I sold it... and it loved it (would routinely get 31/32 mpg highway even with all those miles on it).

Generally pleased with the highway mileage of my TLX, I think I will try sport mode for the city driving soon since I too like the response and it doesn't appear to hurt mileage too much... but I will check!

Thanks as always to all those posting their data, tips and tricks!

 

[andleigh]

I generally get 22 mpg city and 31-33 mpg on the highway (in the mountains with some aggressive bursts of acceleration to pass on one-lane highways). I only drive in Sport mode (AWD model)

The gas you use makes a difference -- I always put the top grade sunoco gas in (I think it's 93 octane). I always disable idle shutoff, and I have found mileage to decrease 1-2 mpg when running the heated seats, although that could be frigid temps on those days making engine run less efficiently too. Load in car makes a difference -- people and cargo. Be careful of some gas stations where the shutoff doesn't work properly, and you keep filling while the overflow preventer sucks it back into the gas pump tanks. Learned that lesson the hard way when a gas station pump pumped 15 gallons of gasoline into my 13 gallon gas tank in my old Civic.

I track mileage manually via a spreadsheet as suggested above (write odometer reading and amount of gas filled and a few notes of what driving I did -- long trip or regular driving). I compute both a per tank mileage and lifetime mileage along with cost of gas temporally and lifetime on the vehicle -- been doing this since my first car in 2002. I found this most useful for discovering a problem in a car rather than actually tracking/saving fuel -- fuel mileage often first to dip when something is wrong with the car -- e.g.. alignment, air/oil filters, tires, engine issues, suspension, brakes, etc.

I'm happy with the mileage I get in my TLX, and find the car's computer to be 1-2 mpg off from what the gas station pump-based reports. The few times I ever dipped below 20mpg was because of stop-and-go traffic... on a trip to nyc / queens actually. Driving through heavy snow kills mileage too.

So in short, expect some near-term variability but it should track pretty consistent over the long run

 

[Gonzo]

I am averaging about 21 MPG but that is about 90% city driving with mix auto idle stop engaged.... I need a long highway trip to see if can hit the mid 30's... that would be great.

 

[MrCar]

"Normally," driving to work every day over surface and rural streets, I average 22-23mpg using Sport and Premium gas on my V6 AWS Tech. Flat roads, anywhere from 40-55 mph. About 9.5 miles each way. Today I filled up my tank and tried light footing it. Got it up to 35.x mpg several times. Ended at about 33. On the way home I had the ac on, and there was a bit more traffic, ended up at 28.9. Not as much fun as going a bit quicker up the gears, but pretty impressive for a five-week old car.

Picture was "at speed."

 

[crack-kitty]

Just checking in... 338 mile round trip yesterday back this morning. 34.9 mpg and cruise was on at 74. Normal mode.

Definitely see a drop to around 26-27 mpg for city driving... I'll admit I don't drive very spirited very often... Every few tanks of gas I've been switching to sport for the whole tank and I'm trying to record the mpg to get some stats.

Sent using Taptalk

 

[Gonzo]

26-27 mpg for city driving... I wish. City and some highway I'm at 21-22.

 

[TLX2014]

On a trip yesterday from Toronto to Niagara Falls the reading went as low as 6.3 L/100 km (37 mpg). The drive was a combination of Sport/Normal mode, Premium gas, 1 passenger, light traffic, 110-120 kph, and hot temperature. At the end of the return trip after hitting some traffic it went up to 6.5 L/100 km (36 mpg).

 

[wlkeel]

26-27 mpg for city driving... I wish. City and some highway I'm at 21-22.

About the same here, 22 to 23 overall. Need to take more road trips!

 

[crack-kitty]

26-27 mpg for city driving... I wish. City and some highway I'm at 21-22.

I do need to revise this a bit... i just looked more carefully at my fuelly data (which of course requires me to approximate my city/hwy driving)... and it looks like I'm more in the 24-25 for city diving. not a big change from my previous guess, but certainly worth revising down. Fuelly is great as they have a bunch of TLX's on there and you can sort by the i4 vs V6 and some other factors. some very clear trends in there.
(oh, another reason is that I drive like a grandpa in the city for some reason....)

 

[jwlkr]

I do need to revise this a bit... i just looked more carefully at my fuelly data (which of course requires me to approximate my city/hwy driving)... and it looks like I'm more in the 24-25 for city diving. not a big change from my previous guess, but certainly worth revising down. Fuelly is great as they have a bunch of TLX's on there and you can sort by the i4 vs V6 and some other factors. some very clear trends in there.
(oh, another reason is that I drive like a grandpa in the city for some reason....)

How do you guys split/calculate your city mpg versus freeway mpg ? I noticed that a lot of members get 20+ mpg driving in the city. My city mileage ( as displayed on the trip computer) is between 15-18 mpg. I have never been able to hit 20 mpg.

What would you describe as a city drive ? I am city dweller with a very short commute to work. For those who are familiar with Boston, my daily commute is along Commonwealth Avenue from Boston College to the Common. For non Bostonians, this is a very short trip (12 miles B&F) with bumper-bumper traffic ( with traffic lights every 3 blocks). I would imagine this is typical "city driving"... short distances, frequent stops and lots of idling time. Is this the sort of drives for which folks are reporting 20+ mpg?

 

[crack-kitty]

How do you guys split/calculate your city mpg versus freeway mpg ? I noticed that a lot of members get 20+ mpg driving in the city. My city mileage ( as displayed on the trip computer) is between 15-18 mpg. I have never been able to hit 20 mpg.

What would you describe as a city drive ? I am city dweller with a very short commute to work. For those who are familiar with Boston, my daily commute is along Commonwealth Avenue from Boston College to the Common. For non Bostonians, this is a very short trip (12 miles B&F) with bumper-bumper traffic ( with traffic lights every 3 blocks). I would imagine this is typical "city driving"... short distances, frequent stops and lots of idling time. Is this the sort of drives for which folks are reporting 20+ mpg?

Excellent point. I thought a little more about what I call city and it's really not fair to call it that for sure. I do so much 'highway' driving (more than 100 mile trips with avg speeds above 65mph), that I tend to call everything else "city".

However, my city is typically driving around my town (maybe 5 miles across, a few stop signs, a few traffic lights)... 30-35 mph etc. My commute to work is about 8 miles, and I almost always go the "back way" (non-highway) which is a long stretch of country road that's 30 mph. Typically I take the highway home, but I count that has highway when I think about my city/hwy split.

Anyway, my 24-25 "city" really is a lot of 30mph, not very many stop lights/stop signs etc... Even if I do drive like a grandpa. So... your lower number is probably more accurate for the city.

 

[Gonzo]

I think it would be interesting to post up average speed.. hmmm I might track that for a week and report back. In the AM I have areas of 40-65MPH and longer areas of 0-25MPH stop and go on the highway. I would call the that city type driving.

 

[EbonyGraph]

How do you guys split/calculate your city mpg versus freeway mpg ? I noticed that a lot of members get 20+ mpg driving in the city. My city mileage ( as displayed on the trip computer) is between 15-18 mpg. I have never been able to hit 20 mpg.

What would you describe as a city drive ? I am city dweller with a very short commute to work. For those who are familiar with Boston, my daily commute is along Commonwealth Avenue from Boston College to the Common. For non Bostonians, this is a very short trip (12 miles B&F) with bumper-bumper traffic ( with traffic lights every 3 blocks). I would imagine this is typical "city driving"... short distances, frequent stops and lots of idling time. Is this the sort of drives for which folks are reporting 20+ mpg?

If you look at instant MPG gauge, you can see that MPG is between 6 to 10 for most of the lower gears. It climbs over 10 once the cars shifts over 4th grear or so. If you spend most of the time in bumper to bumper, the car is pretty much in lower gears most of the time and expecting 20mpg from any V6(I am assuming you are driving V6) is asking too much.

I drive 4cyl with 90% highway at a avg speed of 65mpg and get 34+ in summer.

 

[jwlkr]

Excellent point. I thought a little more about what I call city and it's really not fair to call it that for sure. I do so much 'highway' driving (more than 100 mile trips with avg speeds above 65mph), that I tend to call everything else "city".

However, my city is typically driving around my town (maybe 5 miles across, a few stop signs, a few traffic lights)... 30-35 mph etc. My commute to work is about 8 miles, and I almost always go the "back way" (non-highway) which is a long stretch of country road that's 30 mph. Typically I take the highway home, but I count that has highway when I think about my city/hwy split.

Anyway, my 24-25 "city" really is a lot of 30mph, not very many stop lights/stop signs etc... Even if I do drive like a grandpa. So... your lower number is probably more accurate for the city.

This does make me feel better. I also drive very slow in the city. I have an insurance tracker and their definition of "hard braking" is way too strict. I had 4 hard braking events in the first week and had to totally change my driving style. Now I drive in Eco while driving in the city. I have come to enjoy my slow ( albeit short) commute. The quiet cabin cuts out all the noise and the suspension makes you feel like you are in a very stately car.

My weekend mileage is ~35 mpg. Most of these drives are not on the freeway and I drive in sport. This really impressed me. My average mpg calculated for a full tank is around 22 mpg. Overall, I am happy with this stat.

 

[MrCar]

Took a two hour trip up the CA coast to Pismo Beach, in Sport mode, no cruise control. Two-and-three lane freeway, most flat but some hilly. Traveling between 70 and 80mph. Toss in about fifteen miles on city (well, beach town) streets and then made the return trip. Tank was filled before leaving. 33.7! Can't complain about that.

 

[dan]

MPG to L/100KM

I found this conversion formula for converting MPG to L/100KM and it seems right.
Here’s the quickest way to convert to MPG or L/100KM: divide 235 by the value you have and you get the other. It works both ways!

 

[iOBx]

I just drove from Auburn, AL to Charlotte, NC. Trip computer says I averaged about 67MPH

Not sure I ever got this kind of fuel economy on either of my 9th-gen V6 Accords. Definitely wouldn't have come close in my 9th-gen 4-banger. I'm impressed.

Sent from my iPhone using Tapatalk

 

[technocrat]

Recently picked up a CPO 2015 V6 SHAWD Elite. I am averaging 8.7L/100km in last 2 tankfills (What a stupid unit to measure, seriously) which is around 27 mpg. This is pretty impressive for a Honda V6. I have owned a 2008 V6 and currently also have an MDX with the 3.7 V6(this one's a guzzler but I find it more grunty than the TLX one), none of them came close.

The only small difference is that this is mostly mixed city / Highway driving.

 

[MADBUYER]

hi all i'm new to this forum and I see a lot of you get over 25mpg, some even 30.. what mode do you drive in? I have a TLX V6 tech and I have gotten no more than 20.1 mpg. I do a lot of highway driving, some stop and go in the morning but even on weekends when there's no traffic and i'm doing a steady 70mph, it never changes. I used to drive in Normal, then I recently started to drive in Sport (my mpg never changed..) so i figured I would drive it in a sportier mode for the same MPG. Does this sound normal? I would loooove to get 30mpg, even 25, HAHA. I love my TLX, so I really don't complain about it too much but just wondering what everyone elses thoughts are. Thanks

Jess

I mostly keep 2015 in Sports mode. I burn Shell 93 octane with an occasional trip to the local Co-op to burn a tank of 91 octane ethanol-free gas.

The 2015 TLX gets on average 30 mph in mixed city/highway driving. On the highway along I have achieved as much as 35 mpg.

The 2019 TLX only gets ~27 on average but it only has 1,800 on it. I hope it picks up a few miles per gallon once the break-in period is over (~5,000 miles)

Are you burning premium fuel?