Right. I was blaming just the motor. But of course the gearing is a big part of it. Agree 6th should be more of a true overdrive for efficient highway crushing. Not sure what MPH you hit at redline in 5th, but I’d guess it’s more than fast enough for 99 percent of us.
Fuel Consumption
Hey everyone,
I just wanted to check in and see if anyone has had the situation where the fuel consumption fluctuates.
Not sure if it has to do with the quality of gas or if its something else.
It has happened more frequently in this colder weather.
Here in AZ we get 91 octane and I fill up before going to work, (20 mile drive). Usually I go through one fuel bar to and from work with normal driving. Today I fueled up and went through one bar just to work. WTH? LOL
To me it seems that the fuel usage varies quite a bit.
I just wanted to check in and see if anyone has had the situation where the fuel consumption fluctuates.
Not sure if it has to do with the quality of gas or if its something else.
It has happened more frequently in this colder weather.
Here in AZ we get 91 octane and I fill up before going to work, (20 mile drive). Usually I go through one fuel bar to and from work with normal driving. Today I fueled up and went through one bar just to work. WTH? LOL
To me it seems that the fuel usage varies quite a bit.
41 - 60 of 83 Posts
Redline in 5th is 125ish.
Or so im told....😅
Or so im told....😅
The turbo F24 in 2022 WRX only makes 271hp and gets a mediocre 19 mpg in the city. Compare that to the GR Corolla which is also AWD but makes more power and surprisingly still more efficient. The F24 is a gas guzzler relative to what power it can deliver whether it is FI or NA.I'm gonna guess once you start spooling up the turbos on the Corolla or Supra it will have similar or worse numbers than the 86 - I think the boxer does pretty well for an NA engine.
The old 2zz at 6th gear cruises 80mph at 3600rpm and still makes upwards of 35mpg in real world. I have had two 2zz in 2 different vehicles in the past for a decade that I used them for DD and they are very efficient. The lowest I've seen was 22mpg if you play with the 2zz and keeps on revving it at 8400 rpm. Even the Honda K series, high revving no torque aren't these bad in MPG too.Its the gearing and lack of torque that make the MPG suck for such a small light car. The big camaro will cruise at 70mph at 1200 RPM all day. The brz\86 sit at 3k at the same speed. The same thing happens during acceleration while city driving. That big V8 can create proper acceleration without exceeding 2500 rpm. Meanwhile the twins need 4k just to get out of their own way. Turbo engines tend to be the same. They make plenty of torque down low and dont need revs to get going.
Still, realistically the 6th gear should have been made taller for commuting purposes.
In comparison to other engines, the old 2GR-FE in a Rav4 V6 AWD (3700 lbs) makes 270hp 250 ft lbs but makes almost similar MPG as the F24 in a RWD 1000 lbs less body. Another comparison is the A25A-FKS 2.5L found the current Rav4. It makes 203 hp and 184ft lbs and gets 34 mpg on the highway.
The 2zzGE doesn’t have a lot of low end torque but it is very rev happy. It is like it revs by itself. Nothing beats the silky scream of that Yamaha engine. It is one engine that doesn‘t need an intake and exhaust to sound sporty. I agree, on the highway it can get 32-33mpg if you cruise with it. And 22mpg is generally the low end. The F24D seems to chug gas in the city, way more than I thought it would. It definitely does worse than advertised in stop and go/city driving in my opinion, and that isn’t reving/racing it. But on the highway, in auto 6th gear it gets like 32mpg, which is higher than I imagined. But I don’t don’t do a lot of 70mph+ highway driving.
Displacement is called displacement for a reason. Its how much air is displaced or moved through the engine with one revolution. While cruising most modern cars will look to maintain the same air\fuel ratio of 14.7:1. So if you have more displacement with the same ratio you are going to use more fuel under similar operating conditions. The big engines use tall gearing to reduce the impact. Smaller engines tend to use forced induction to maintain decent acceleration down low.
A 2zz being only a 1.8L is quite a bit smaller and has lower compression. Less air in means less fuel used. Just imagine the MPG it could get cruising at 2500 instead of 3500.
A 2zz being only a 1.8L is quite a bit smaller and has lower compression. Less air in means less fuel used. Just imagine the MPG it could get cruising at 2500 instead of 3500.
It's not really just about displacement. It's about MPG to Power ratio. How much gasoline can you convert to useful mechanical energy?Displacement is called displacement for a reason. Its how much air is displaced or moved through the engine with one revolution. While cruising most modern cars will look to maintain the same air\fuel ratio of 14.7:1. So if you have more displacement with the same ratio you are going to use more fuel under similar operating conditions. The big engines use tall gearing to reduce the impact. Smaller engines tend to use forced induction to maintain decent acceleration down low.
A 2zz being only a 1.8L is quite a bit smaller and has lower compression. Less air in means less fuel used. Just imagine the MPG it could get cruising at 2500 instead of 3500.
The 2zz may be just a little 1.8L but is commonly known to get 230whp with just bolt on stock internals. You can check this on YouTube with few people dynoing it around this number. Of course the MPG of a 230whp 2zz isn't going to be the MPG I described last time. However, there many other bigger engines with more displacement, more torque and power than the F24 but they still manage to get better or similar MPG.
As I mentioned last time, the 3.5L 2GR block engines is a good example. 2GR-FE and especially the 2GR-FKS (in Camry V6) which makes 301hp 267ft-lbs and still get cruising MPG of 33 and 22 in the city which far better numbers. And this is on a heavier Camry body. Heck even the 4500lbs Sienna V6 with 2GR-FKS still get similar MPG as the F24 in that small vehicle frame. There is no reason for a 230hp 2.4L in very light body to get similar MPG as a 300hp sienna with almost twice the body weight.
I mentioned this last time too, I have an old Rav4 V6 AWD, with 140k miles 3700lbs of weight and only mediocre 5 speed. It makes around 269hp 246 ft-lbs and still gets similar MPG as the GR86. And not to mention, all of this while using cheaper gas, rolling heavy KO2 tires and has this big front surface area that makes the drag coefficient so bad compared to the new twins.
The most comparable example is the Lotus Evora. It has the same old 2GR-FE engine but with super aggressive gearing. Below you can see and compare how bad the F24 gets.
| Model | Power | Torque | Emissions CO2 | Top speed | Acceleration 0–60 mph (0–97 km/h) | Economy (combined) |
|---|---|---|---|---|---|---|
| Evora | 280 PS (206 kW; 276 hp) at 6,400 rpm | 350 N⋅m (258 lb⋅ft) at 4,600 rpm | 217 g/km | 163 mph (262 km/h) | 4.8 seconds | 30.3 mpg‑imp (9.3 L/100 km; 25.2 mpg‑US) |
| Evora IPS | 280 PS (206 kW; 276 hp) at 6,400 rpm | 350 N⋅m (258 lb⋅ft) at 4,600 rpm | 210 g/km | 159 mph (256 km/h) | 5.0 seconds | 31.4 mpg‑imp (9.0 L/100 km; 26.1 mpg‑US) |
| Evora S | 350 PS (257 kW; 345 hp) at 7,000 rpm | 400 N⋅m (295 lb⋅ft) at 4,500 rpm | 229 g/km | 178 mph (286 km/h) | 4.4 seconds | 28.7 mpg‑imp (9.8 L/100 km; 23.9 mpg‑US) |
| Evora S IPS | 350 PS (257 kW; 345 hp) at 7,000 rpm | 400 N⋅m (295 lb⋅ft) at 4,500 rpm | 224 g/km | 167 mph (269 km/h) | 4.5 seconds | 29.3 mpg‑imp (9.6 L/100 km; 24.4 mpg‑US) |
| Evora 400 | 406 PS (299 kW; 400 hp) at 7,000 rpm | 410 N⋅m (302 lb⋅ft) at 3,500 rpm | 225 g/km | 186 mph (299 km/h) | 4.1 seconds | 29.1 mpg‑imp (9.7 L/100 km; 24.2 mpg‑US) |
| Evora 400 IPS | 406 PS (299 kW; 400 hp) at 7,000 rpm | 410 N⋅m (302 lb⋅ft) at 3,500 rpm | 230 g/km | 174 mph (280 km/h) | 4.1 seconds | 29.1 mpg‑imp (9.7 L/100 km; 24.2 mpg‑US) |
| Evora Sport 410 | 416 PS (306 kW; 410 hp) at 7,000 rpm | 420 N⋅m (310 lb⋅ft) at 3,500 rpm | 225 g/km | 190 mph (306 km/h) | 4.0 seconds | 29.1 mpg‑imp (9.7 L/100 km; 24.2 mpg‑US) |
| Evora Sport 410 IPS | 416 PS (306 kW; 410 hp) at 7,000 rpm | 420 N⋅m (310 lb⋅ft) at 3,500 rpm | 230 g/km | 174 mph (280 km/h) | 4.1 seconds | 29.1 mpg‑imp (9.7 L/100 km; 24.2 mpg‑US) |
| Evora GT410 Sport | 416 PS (306 kW; 410 hp) at 7,000 rpm | 440 N⋅m (325 lb⋅ft) at 4,500 rpm | 234 g/km | 190 mph (306 km/h) | 3.9 seconds | 29.1 mpg‑imp (9.7 L/100 km; 24.2 mpg‑US) |
| Evora GT410 Sport IPS | 416 PS (306 kW; 410 bhp) at 7,000 rpm | 450 N⋅m (332 lb⋅ft) at 4,500 rpm | 234 g/km | 174 mph (280 km/h) | 4.0 secs | 29.1 mpg‑imp (9.7 L/100 km; 24.2 mpg‑US) |
| Evora GT | 422 PS (310 kW; 416 hp) at 7,000 rpm | 430 N⋅m (317 lb⋅ft) at 3,500 rpm | 274 g/km | 188 mph (303 km/h) | 3.8 seconds | 26 mpg‑imp (11 L/100 km; 22 mpg‑US) |
| Evora GT IPS | 422 PS (310 kW; 416 hp) at 7,000 rpm | 450 N⋅m (332 lb⋅ft) at 4,500 rpm | 273 g/km | 174 mph (280 km/h) | 3.8 seconds | 24 mpg‑imp (12 L/100 km; 20 mpg‑US) |
| Evora GT430 Sport | 436 PS (321 kW; 430 hp) at 7,000 rpm | 440 N⋅m (325 lb⋅ft) at 4,500 rpm | 234 g/km | 196 mph (315 km/h) | 3.7 seconds | 29.1 mpg‑imp (9.7 L/100 km; 24.2 mpg‑US) |
| Evora GT430 Sport IPS | 436 PS (321 kW; 430 hp) at 7,000 rpm | 450 N⋅m (332 lb⋅ft) at 4,500 rpm | 234 g/km | 174 mph (280 km/h) | 3.6 seconds | 29.1 mpg‑imp (9.7 L/100 km; 24.2 mpg‑US) |
Its a common misconception to think horsepower has anything to do with MPG. Modern FI cars use a ton of boost to create HP but while cruising have no boost, tiny displacement and low compression. Also almost every vehicle now has v-tec like features that change cam timing, intake runner size, heck nissan has engines that can change compression ratio on the fly. That leads to engines thay can potentially make good power while heavy on throttle and change profiles to sip fuel while cruising. Many factors can be changed to affect the MPG. Our car has these feature. The only thing against it is the crazy gearing. If I cruise at 40 in 6th gear I can get over 40mpg. But I never go that slow on the highway and it takes the car out of its powerband.
I get 36 mpg lol slow ride take it easy
I got 20.3 in my 86 now it is a manual. I think my habit is not that good. Mostly I got 93, If there is no 93, 91. All of them is shell v-power
At least you get 93 octane. lol.I got 20.3 in my 86 now it is a manual. I think my habit is not that good. Mostly I got 93, If there is no 93, 91. All of them is shell v-power
We only get 91 here in AZ.
How many currently manufactured NA engines make 95 hp per liter or more? Available in a $30K platform?The turbo F24 in 2022 WRX only makes 271hp and gets a mediocre 19 mpg in the city. Compare that to the GR Corolla which is also AWD but makes more power and surprisingly still more efficient. The F24 is a gas guzzler relative to what power it can deliver whether it is FI or NA.
Before I relocate to CA I do have 93 in PAAt least you get 93 octane. lol.
We only get 91 here in AZ.
I guess I need to try more Shell.
By the way, which company is better besides shell(shell is great right?)
I know California has 93 in some spots.(from what I heard)Before I relocate to CA I do have 93 in PA
I guess I need to try more Shell.
By the way, which company is better besides shell(shell is great right?)
I try to put Chevron as much as possible. If not, we have QT gas stations as well (which are pretty good.
I have never used Shell or any other gas stations.
I will check them thanksI know California has 93 in some spots.(from what I heard)
I try to put Chevron as much as possible. If not, we have QT gas stations as well (which are pretty good.
I have never used Shell or any other gas stations.
I have nearly 21K miles and routinely get 32-33MPG in Summer and 31-32MPG Winter using crap fuel and on snow tires. Most of my driving Is rural.
InterestingI have nearly 21K miles and routinely get 32-33MPG in Summer and 31-32MPG Winter using crap fuel and on snow tires. Most of my driving Is rural.
I am filling up at the pump way too much to get the numbers my car is telling me in the little digital screen…car lies horribly…Don’t care. Still love it.Note that the car’s computer is a liar. I’ve done a half dozen fillups and each time the actual MPG (miles driven divided by gallons to fill up) is about 1.25 to 1.5 MPG less than the computer reports.
I’ve had many new cars of various brands and most of them also lie. The only recent vehicle I've had that tells the truth: my 2020 4Runner. Other 4Runner owners report the same thing. Its computer is typically dead on or within 0.25 MPG of your hand calculated amount at the gas pump.
My recent worst lying car was my 2019 WRX. That computer tended to exaggerate by a good 1.5 MPG or more.
I hear yaI am filling up at the pump way too much to get the numbers my car is telling me in the little digital screen…car lies horribly…Don’t care. Still love it.
I fueled up on Friday morning and yesterday at noon I was at 1/2 a tank.
numbers are very inconsistent for sure.
other occasions I can go up to 3 days before getting down to the half way point.
filled up last night - only 200 miles driven, put in 11 gal at $5/gal, ouch!
dang..filled up last night - only 200 miles driven, put in 11 gal at $5/gal, ouch!
mostly city driving?
I
41 - 60 of 83 Posts
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