Excessive/Ghost Mileage after mechanic?

Would such drastic effects be visible within a week of replacement?

 

Using yours as a comparison, I've identified there's almost certainly a problem with the rear left brake assembly. Spins stiffly.
Rear right spins more freely, (not as much as yours), but there's also an atrocious grinding sound that isn't audible when driving/braking, just when the wheel is up in the air.

Two things worth noting about effort:
A) I used both hands and even a starting pullback in comparison to your one hand,
B) I'm sore from the gym yesterday so it probably wasn't that strong
I think these two facts cancel each other out

Grinding sound is at the end of the video, along with my fantastic cinematography and camera angles /s

Taking it to the mechanic in an hour with this information. Any last-minute thoughts?

 

No, trust me, I don't know my stuff xD
He's said that the caliper on the rear left isnt in the best condition, not seized, but it's not anything to warrant a replacement. The right caliper was the one that was replaced, so that's the reason it's spinning more freely.
The scraping noise was apparently rusted backplating that was rubbing up against... Something. I don't remember.
He said that the mechanic cut/bent it back since it's pliable, and since they're "mostly dust guards" (??) It's not anything serious.

He mentioned I should get my front brakes checked at my next service (which at this point is 4,000km) because they were quite hot when I came in last time, but the tech didn't see anything overt, so unlikely.

The brakes were dissembled, checked, and reassembled, though I couldn't be present for it nor would it have helped. Not much of a clue on what's what, and I'm sure the hybrid techs wouldn't appreciate a clueless 20yo showing them a pdf on how to do their job anyway.

He said there's not much in the way of brakes, nor would it be causing that much of an increase. He recommended fuel system cleaner, which I don't think will help.

Any other probable causes? I've noticed it's also struggling a bit more lately, not sure if that was always the case. Any basic engine diagnostics I can do without tools or a garage?

I could probably take off my tire for a closer look at the brakes for a second opinion. Just need to know where to look.

A reminder of the primary symptom I'd like to diagnose for anyone joining:
The second ICE turns on, it spikes to ~17L/100km, and doesn't go down to 5-6 until I reach a consistent speed.
I need to press down the accelerator further than before as well.


https://cdn.discordapp.com/attachments/480682139881570306/557275439845081089/DSC_0182.jpg

 

Update:
Had a thought. I drove a few km exclusively in EV, and as I suspected despite doing 15km/h, engine spiked to 15L/100km. Came to a full stop, let my foot off the brake and let it coast at 5km/h.
10L/100km.

Seems something's wrong with my engine. Hope I haven't messed it up with all my driving in this state.

So, what should I check? Can I monitor anything through ODB2?

 

Yes, it's a dealership.

As I said though unfortunately I couldn't be present for the brake maintenance.

Burlington toyota - بحث Google

 

That's alright, as I've posted above I don't think it's brakes anymore. Not mainly, anyway.
Any engine diagnostics you can think of?

 

Update, I switched to Torque and noticed that on engine activation, load increased to around 90%. RPMs below 2000, which is apparently normal. So what gives? Should load be that high on activation? It also only seems to decrease to about 80% when its reached top of its acceleration (50-60km/h), and only decreases to 50% when braking down a hill. Is that normal?

 

Specs?
Also granted, it's on an app (Torque Lite) for odb readers made for generic cars, not exclusively hybrids like Hybrid Assistant.
Guess that's a dead end then.

Should I start a new thread, given the change in information?