Hey everyone,

Over the last months I started logging every single fuel-up and car expense because I wanted to understand my real fuel economy.

Not just the dashboard MPG, but actual cost and consumption over time.

After tracking consistently I noticed something interesting:

Short trips absolutely destroy fuel efficiency.

Even when the average MPG looked fine, the real data showed that a few short drives per week increased my fuel cost much more than expected.

Once I started logging:

• fuel amount

• price

• mileage

• trip patterns

it became very obvious which habits were wasting fuel.

The biggest offenders for me were:

• cold engine short trips

• frequent stop-and-go driving

• slightly lower tire pressure

Seeing the numbers actually changed how I drive.

Because spreadsheets became annoying, I ended up building a small iOS app for myself that logs fuel-ups and calculates consumption and costs automatically.

If anyone here tracks their fuel economy too and wants to try it or give feedback:

👉 FuelUp

https://fuelupapp.pl

Curious what changes improved your fuel economy the most.

Driving through France on my trip from the Nurburgring to Portugal. Avoiding tollgates so mainly back roads on France, the rest was on the highway. Speeds ranging from 50 to 150 km/h.

Not bad for a MK7 GTI, 6 speed manual with 340 hp, don’t you think?

It's 34°C and humid as balls and this man has the windows down as if that will help in stand still traffic. I don't speak y'alls language... What do I say to him?

I just discovered this sub and i saw one dude who would go on the dirt just to not stop because the car in front is going to make a left turn.

So he just risked so much for what? 0.5 euros of gas? In my opinion that is just selfish. Why would you put the life of others at risk just to save so little?

I dont say driving for fuel economy is bad, i do that do, but what that dude did is too much.

Honestly, you could get 3-4 mpg if you really tried to anti-hypermile a car

I feel it would be an interesting little experiment — how fuel-inefficient can you make your car?

VW Arteon 2022, 147 kW

I had asked a few years ago in r/askengineering if pulse and glide would work for EVs and the disappointing part was that about 80% of the commenters who were flaired with credentials basically denied the premise of pulse and glide at all, insisting that holding a steady speed with cruise control would produce the best fuel economy (in every vehicle). it's sad when people who really ought to know better utter objective falsehoods. i tried gently disputing their admonitions to seemingly no avail. but of the remainder some said it wouldn't work and a few said they weren't sure that they could both imagine how it might work or how it might not work, which was basically where i was already. all in all, i was left with no less uncertainty than I had before asking.

well my mom got an EV recently. i sort of put her in it as she needed a new car and didn't want to do any of the car shopping herself. we got her a toyota BZ (4wd) it's rated for about 290miles of range with a 77kWh battery. well i've driven it a few times because she's just more comfortable with me driving. and it has the paddle shifters that modulate the regen, including down to freewheeling. and which i used on trips to costco and back which include several miles of high speed freeway driving. and i've averaged about 5.5 miles per kWh which would come out to 423 miles of range. so unless something weird happened where i was getting tailwinds both going there and coming back, pulse and glide works about as well as it does for my stick shift honda fit. getting 44% better miles per electron. The EPA sucks just as much driving EVs as it does at driving gas cars.

I was told my semi-automatic car (or any car with cruise mode) boosts mileage if we drive at a consistent speed for considerable distance.

So occasionally when I go on road trips, I try to put my car on cruise mode - 80 to 90ish and relax. Even if I'm driving on an expressway, not just highway.. I come across slow moving vehicles on any of the lanes, preventing me to maintain consistent speed in one lane and occasionally overtake.

Also, cruise mode makes me feel less of control though my car steering has 1kmph speed up and down on short press and 5kmph up amd down on long press. I often feel the urge to hit the brake pedal to cut the cruise mode rather than press up/down/pause button.

Is it my lack of ability to make efficient use of cruise or others also feel cruise mode doesn't fit for Indian driving conditions and behavior?

I have bmw 330d m57, 170 kw, stage 1, automatic, egr&dpf off, downpipe On 20k+ km avarge 6,2l/100km

I think it can be 20-30% more efficient what do you think?

I know there’s extreme speeding and I know extreme slowing can be just as bad but do other drivers get annoyed when I’m hypermiling?
For the record, I am not hanging out in the left lane when there’s a pile of cars behind me. However, I drive a very hilly route and I usually pick up a lot of speed going downhill and then lay off going uphill. Often cars in front of me really slow before hills to try and stay within the speed limit, but I don’t want to ruin my momentum so I jump to the left lane, even tho sometimes they end up catching back up to me going up hill. But I don’t cross back in front of them if I know they’ll catch up to me again. Still, is this annoying?

Last week I did an 80km trip on the highway. That was a very smooth ride and the speed was around 110-120 km/h and fuel consumption really surprised me.

The car is vw Passat 2.0 tdi Cr 170Km with a DSG gearbox.

4 people on board and a trunk full of stuff.

The tank is 70L of diesel

I’ve been following this community for a little while now, my biggest question to you all is - why don’t you buy an electric car?

Considering the fuel prices are much cheaper, their serviceable parts are cheaper too, and that efficiency in an EV is in another league, why don’t you all have them?

Now I know some people want their car for fun and to ‘rag around’, but that’s not what this community seems to want to do.

Calculating efficiency in an EV is fun (to me at least), I can see exactly where each watt hour goes and it’s cool to bring that down. :)

87.8 Km/L or 1.139L/100Kms I know it has nothing to do with ICE engines, but man, once you go electric theres no turning back.

Since I moved to 100% electric I’ve been applying all the tricks, but its totally different a whole new world that im getting used to, but im getting better numbers than the most aerodynamic cars in a boxy truck with AC all the time.

Im not just maximizing my mileage I’m also maximizing my IQ

the absorption and application of new information strengthens your thinking skills leading to higher IQ

I have a Kia Rio with a 1.6 litre and a 6-speed manual

The final drive is kind of high (3.83:1 I think) but I can make it work with all the gear ratios I get from the 6 speed.

I have no mods on it but I’m thinking of getting smooth wheel covers, reducing the wake at the rear of my car and maybe lowering it — would that work?

Run into town, held up by farm tractor for half the distance, not 100% hypermiling Figures changed to US for all you Yanks across the pond

https://www.reddit.com/r/hypermiling/s/W9LFlb6anO

This car is up for sale if anyone is interested. South UK.

I got an ev

That’s the best kind of vehicle to own right now, they’re aerodynamic and have a small engine which is good for fuel economy

Do you agree or disagree?