High fuel usage Corolla TS 2.0l

[Iian88]

Hello,

I have a 2022 Corolla TS 2.0l. I’ve been noticing that I seem to be burning through fuel a lot quicker than before. I use to get around 400miles per tank but that seems to be dropping to around 300miles. The dash computer average has also dropped from around 55-52mpg down to 42-38mpg. My tyres are correctly inflated and my typical driving pattern hasn’t changed.

Any ideas what could be causing this would be much appreciated. 

[TonyHSD]

Hi, 

yes it is normal occurrence and it’s purely because of the cold weather. 
Typical for Toyota hybrids to lose around 10mpg on average +/-3 between summer and winter drives. Driving style also affects the fuel consumption. 
If you do a lot of short drives , towns etc the fuel consumption will be more affected than if you do long motorway drives as the car will keep engine on for longer to maintain engine temperature and cabin heat.
Longer motorways drives engine will be on most of the times anyway so it equals a bit but the fuel consumption will be reduced. Just physics and the more thermo efficient is the engine more suffers from cold weather. 
Your particular fuel consumption is a bit on the lower side , but not that much off. You may try better fuel if you haven’t yet, like e5 from Shell, bp, esso, etc and avoid cheap supermarket fuels. , you definitely gonna get 2-3mpg more. 

[Obsidian Estate]

It'll be the cold weather. Mine drops during the winter too. According to Fuelly it dropped as low as 42 over xmas last year.

[fred88]

I'm find the same. Tank average is always 60+ in summer but the cold weather has reduced that dramatically.  Another factor I reckon is driving in heavy rain probably due to water lying on the road?

[Iian88]

18 minutes ago, Obsidian Estate said:

It'll be the cold weather. Mine drops during the winter too. According to Fuelly it dropped as low as 42 over xmas last year.

I’ve had this issue since late August, I’ve changed to using BP and Esso premium E5 fuel since September too to see if that’ll help

[Iian88]

19 minutes ago, fred88 said:

I'm find the same. Tank average is always 60+ in summer but the cold weather has reduced that dramatically.  Another factor I reckon is driving in heavy rain probably due to water lying on the road?

I’ve had this issue since late August, I’ve changed to using BP and Esso premium E5 fuel since September too to see if that’ll help

[Mohamed Ghousullah]

Hi,

It seems temperature, Winter Tyre type (CBC or BBC) also play a role. I am from Denmark, and I bought a 2019 used car in March, before summer. Based on my driving habits I was used to get 19 KM/l (5,18 l/100KM) on average. This has dropped to 15.50 - 15.8 (6,4l/100KM) in the last few days.  The temperature also dropped from 10-degree Celsius to -10 degrees here.

 

[Obsidian Estate]

31 minutes ago, Iian88 said:

I’ve had this issue since late August, I’ve changed to using BP and Esso premium E5 fuel since September too to see if that’ll help

I only usually use 95, very rarely 97 or 99. Is it due a service? If you're concerned it may be worth raising it with your local dealer.

[twintopp]

most likely just the cold weather, can always drop in to the dealer for peace of mind.

[AndrueC]

I've often thought that hybrids suffer more from winter than conventional cars do. Mine doesn't drop as much since I stopped having to commute as that means it's usually at least fairly good weather when it comes out of the garage. But my 1.8 has still dropped from mid 60s to high 50s. I did think last night when I had a relatively long drive along the M40 that it might get back to 60 mpg but it couldn't quite manage it.

I've also noticed that I have less power from the Battery now. Stretches that I'd normally do on Battery with ease are now a bit of a struggle and probably will be until spring.

One village I pass through a lot is an easy 30 mph on Battery in the summer but at the moment I'm lucky to get all the way through on battery and even then I'm down to 25 mph at one point and barely get back to 27 mph before the speed restriction lifts.

[TonyHSD]

1 hour ago, AndrueC said:

I've often thought that hybrids suffer more from winter than conventional cars do. Mine doesn't drop as much since I stopped having to commute as that means it's usually at least fairly good weather when it comes out of the garage. But my 1.8 has still dropped from mid 60s to high 50s. I did think last night when I had a relatively long drive along the M40 that it might get back to 60 mpg but it couldn't quite manage it.

I've also noticed that I have less power from the battery now. Stretches that I'd normally do on battery with ease are now a bit of a struggle and probably will be until spring.

One village I pass through a lot is an easy 30 mph on battery in the summer but at the moment I'm lucky to get all the way through on battery and even then I'm down to 25 mph at one point and barely get back to 27 mph before the speed restriction lifts.

Very good experience and absolutely true. 
Been witnessing this for many winters now. I believe the car when cold simply protects the Battery from been loaded so no accelerated life degradation. Same thing happens when too hot in summer time and we are using an AC, the car even with a full Battery charge will still switch to petrol earlier if it was more ambient temperature outside and there was no need of ac. 

[Cyker]

Basically normal; It is mostly the dropping temperature - One downside with having a very efficient car is the efficiency only goes down in adverse conditions, where with a less efficient car you'd barely notice the change.

However, I recently found out they change the fuel formulation through the year, with different blends for summer, spring/autumn and winter, and I think that may be why we get small but noticeable MPG drops at certain times of year instead of the more gradual drop you'd expect following the average temperature, as the summer blend is the most calorific while the winter blend the least??

 

[TonyHSD]

I am rocking at 50mpg average right now as always been the case every winter through the years of ownership. Summer time goes up to 60mpg. 
What is more important here is that even with the typical wear on the engine ( high oil consumption now 2+Ltr per 10k miles ) and aged traction Battery the car still managed to deliver the same figures as it was new 13 years ago, and also a numbers that are very similar to a brand new Toyota hybrid of this size. It’s a winning formula to all hybrid owners.