He knows what he is talking about - I use his techniques and get much closer to the Toyota company mileage figures...
New LC 2025 Owner-MPG question/concern
- Thread starter TonkaTruck
- Start date
He knows what he is talking about - I use his techniques and get much closer to the Toyota company mileage figures...
Yep, worked for me too.
Yes! Someone else commented that TCCN video didn’t apply to our LC’s. I strongly disagree, but I wasn’t going to start a pissing match with the guy. I am glad the video helped!
Yes they are 265/70/18. I screwed up typing
I have watched this video and find it relevant as well. I also wanted to add that I have tried the following fuel octane 87, 89, 93. I do find that with 93 octane I am within their mpg range. Lower octane changes by up to 2mpg
One thing I noticed with my LC250 LC trim fully stock with 8000 plus miles on it. For the last 10 days the weather in my area was between 20-35 degrees and wind anywhere from 5-20 mph. My work commute , I always set the cruise control at 75 mph and it’s 90% highway driving on a flat road, no hills and no traffic. During those 10 days I averaged 18.8 mpg. Today the weather was 62 degrees when I was commuting home, with no wind, no clouds and clear sky. I used the same approach, 75 mph cruise control and I got a whopping 23.8 mpg. I believe in winter we will see 3-5 mpg hit and as summer approaches, our mpg should improve. I was between 21-24 mpg when I was driving my car for first 5 months before cold front started.
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I too have taken about a 5mpg hit in the winter. 17 mpg in winter 40 and below, 22 above 45-50. It seems like the hybrid system really does not activate much in the cold weather under similar throttle conditions.
What fuel are
You using (octane)? And what speeds?
You using (octane)? And what speeds?
Are you fully stocked using premium gas?
My impression is that in cold weather the motor needs to run more to both provide heat and support the additional
electrical demands of the cold and shorter daylight hours.
- Moderator
- #52
Same as the summer as far a load goes. I use 87 in the tank.
Air get denser is cold weather. Consequently, air drag increases about 2% for every 10F drop in temperature, and that translates to about ~1% drop in fuel efficiency for every 10F decrease in temperature at highway speeds on average.
Influence on fuel efficiency depends a lot on the cars aerodynamics, but I don’t think we are doing any better than the average with a brick shaped car.
If we make a rough calculation for 70F vs 10F. There would be 30% increase in drag, and about 15% drop in fuel efficiency. So if you were getting 23mpg at 70F, you would get 19.5 at 10F. This assumes no wind, so if there is headwinds, it would be even worse.
The math adds up based on my experience with getting the said mpg in below 30F and above 65F weather. I saw a difference of 5 mpg more in summer with the exact same trip and speed
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I'm also seeing a 3-4 MPG hit during colder winter times. I watch my hybrid MAX gauge and it doesn't do much these days. Battery has been at 6 bars without dropping for weeks now.
I have about 5000 miles with an 18.9 average. Best I ever saw is 22 on a road trip from Durham to Asheville, NC. I also have the Nitto tire upgrade, which I'm sure doesn't help. Speed also kills the mpg, if I stay in the mid 60mph range on the freeway I see 20mpg.
OP
OP
- Thread starter
- #57
Quick update, now at 5000 miles, the hybrid driving video many have suggested has helped. Now averaging 19.5mpg, but regular trips are getting better, 22mpg. Concerning fuel range on the last 4 fill-ups, even though my range states 297 or 306 post fill-up, there is a 2 gallon cushion. When I take the average mpg x the gallons used to fill the tank, it equals the range given by the LC, with an average fill-up of 15.5 to 15.8 gallons. Premium use helps as well.
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Do NOT do two top off squeezes!!!
As the CCN has explained, doing so will eventually fill your charcoal canister (part of the evap system) with fuel. It is an expensive fix!
My ex GF did this, and I ended up doing the repair, which was a pain in the a$$ to do, but doable.
