2025 Maverick Hybrid HF55 Transaxle Info (nice write up)

[inline_five]

EDIT: But I agree - and I think the "best" hybrid would be one that has a smaller turbocharged motor (think 1.5L 3 cylinder from Bronco Sport) and much larger electric motors that would handle more of the acceleration and driving then the engine can kick on to provide cruising power and spin the motor generator.

Concur about people not plugging PHEVs in.

I would like a more powerful/torquey electric motor to get up to 60-70 mph at normal acceleration amounts and a larger battery, in the realm of 5 kwh. Would be nice to hit the gas and not have to worry about just slightly pressing the pedal to keep it in EV mode.

Also would be nice to have a 120v/15 amp outlet in the back for running stuff on, and a 5 kwh battery would give you ample room. Even something like a shop vac you could plug in and run for 30 mins (1000 watts/hour so 500 watts total for the 30 mins) would be super cool.

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[colinl]

I think the "best" hybrid would be one that has a smaller turbocharged motor (think 1.5L 3 cylinder from Bronco Sport) and much larger electric motors that would handle more of the acceleration and driving then the engine can kick on to provide cruising power and spin the motor generator.

maybe not. Hyundai has exactly such a powertrain, and they haven't put it in the Santa Cruz yet.

it's probably also a cost issue, but perhaps the 2.5 has advantages over a much smaller displacement ICE. The Prius used to have a tiny engine also, and the current iteration uses a 2.0.

 

[Scupking]

Hmmm - no more shift points in Sport mode, I don't think I heard them?
I've not a done a 0-60 full slam, so perhaps then it doesn't do the changing of RPM's to mimic a shift.

Or have they removed that effect from 25MY even with normal driving in Sport?

@Ryom - you've commented using Sport on every day driving in your 25MY - does it do the RPM changes to mimic shifting?

The 25 still simulates shifts in Sport. They aren't as pronounced as my 22 was.

 

[Phimosis]

I skipped a bunch of pages, but saw someone asking for PHEV.

Real life usage shows 50% of PHEV owners stop bothering to plug it in after a short while. It's a bit of hassle for a bit of gas savings, and many people don't care enough to keep plugging it in.

However I would LOVE a "double" battery Hybrid- people could get more out of their regen and reduce gas usage even more!

I had a 2014 Prius PHEV. It had an 8.8 kWh battery. I diligently plugged it in every single night for the 183k miles that it survived.

It was rated for 25 all electric miles, but in my commute, I was immediately getting on the freeway in LA at near sea level and driving at 80 mph to the high desert, which goes up to 3,500 feet elevation. The battery could only last for about 11-12 miles before the gas engine would kick on.

At 185k miles, the head cracked, pumped antifreeze into the oil and the engine seized. The trip computer was showing that I had done 98% of my total driving on gasoline only.

When the first one failed, I replaced it with the regular Prius with the 1.1 kWh battery. The regular Prius got the exact same gas mileage as the PHEV.

With the regular Prius, there were numerous times where I would be coming off of a mountain pass and it would be doing engine braking because the 1.1 kwh battery was full.

On the flip side, the Prius with the 8.8 kwh battery was heavier and had more rolling resistance, so it was using more energy at all of the other times, leading to the fuel economy between the two being the same, but the purchase price being higher because of the larger battery and more powerful electric motors of the PHEV.

From 2013 until now, I went from ICE —> PHEV —> HEV —> BEV. If I had to do it over again, I would have ICE. —> HEV —> BEV, just skipping the PHEV.

 

[The Real Maverick]

I had a 2014 Prius PHEV. It had an 8.8 kWh battery. I diligently plugged it in every single night for the 183k miles that it survived.

It was rated for 25 all electric miles, but in my commute, I was immediately getting on the freeway in LA at near sea level and driving at 80 mph to the high desert, which goes up to 3,500 feet elevation. The battery could only last for about 11-12 miles before the gas engine would kick on.

At 185k miles, the head cracked, pumped antifreeze into the oil and the engine seized. The trip computer was showing that I had done 98% of my total driving on gasoline only.

When the first one failed, I replaced it with the regular Prius with the 1.1 kWh battery. The regular Prius got the exact same gas mileage as the PHEV.

With the regular Prius, there were numerous times where I would be coming off of a mountain pass and it would be doing engine braking because the 1.1 kwh battery was full.

On the flip side, the Prius with the 8.8 kwh battery was heavier and had more rolling resistance, so it was using more energy at all of the other times, leading to the fuel economy between the two being the same, but the purchase price being higher because of the larger battery and more powerful electric motors of the PHEV.

From 2013 until now, I went from ICE —> PHEV —> HEV —> BEV. If I had to do it over again, I would have ICE. —> HEV —> BEV, just skipping the PHEV.

Don't you mean it became a regular Prius Hybrid after the 11 miles?

I would not say "98% were gas only".
98% were HEV right?

PHEV for sure is a niche market.

Semantics. I guess you could say 100% of my Maverick's miles are gas only. But like half have gasoline being burned.

I do this every day:

 

[Phimosis]

maybe not. Hyundai has exactly such a powertrain, and they haven't put it in the Santa Cruz yet.

it's probably also a cost issue, but perhaps the 2.5 has advantages over a much smaller displacement ICE. The Prius used to have a tiny engine also, and the current iteration uses a 2.0.

There’s some engineering challenges with Miller cycle turbocharged gasoline engines. That is most likely why Ford uses an Otto cycle turbo engine in their power boost hybrids, rather than it being a cost issue. But with the Otto cycle, you lose out on the 20% efficiency gain of the Atkinson/Miller cycle engine’s 3:2 expansion to compression ratio.

But you’re right, for 2025 Hyundai does offer a Miller cycle turbo hybrid. Maybe they have overcome the engineering challenges and Ford will be on their heels to replicate this success in the near future.

What engineering challenges? Atkinson/Miller cycle engines have delayed intake valve closing and part of the intake charge is pushed back out of the intake port and into the intake plenum. With the N/A Atkinson cycle, it is no problem. With the turborcharged Miller cycle, they have struggled to get good boost/horsepower levels with satisfactory engine durability.

 

[710-oil-614]

maybe not. Hyundai has exactly such a powertrain, and they haven't put it in the Santa Cruz yet.

it's probably also a cost issue, but perhaps the 2.5 has advantages over a much smaller displacement ICE. The Prius used to have a tiny engine also, and the current iteration uses a 2.0.

Oof. Never cite Hyundai as proof. Seems like you just want to argue.

The HF55 has already been paired to the 2.0eb. The reason they don’t do it in the Maverick is simply for cost and to not offer the drivetrain at a lower cost than the nautilus.

 

[BLUEOVALRACER]

Not really interesting, rather expected.

So for freeway driving 65-75 mph you would pick the Eco Boost over the Hybrid?

 

[710-oil-614]

So for freeway driving 65-75 mph you would pick the Eco Boost over the Hybrid?

No it’s still hybrid all day for me but it will not outperform an ecoboost by much in highway driving.

 

[ricklee4570]

According to the latest Ford supplied information, ALL 2025 hybrid mavericks have the 3.37 axel ratio. I would love to see any legitimate Ford (and current) information that says otherwise.

From my truck literature, 2025 AWD Hybrid XL

Included Packages & Options

• Equipment Group 101A$2,220
  • Engine: 2.5L Hybrid
  • Transmission: Power-Split Electric CVT
  • 2.91 Axle Ratio
  • GVWR: 5,320 lbs
  • Tires: P225/65R17 A/S BSW
  • Front Cloth Bucket Seats
  • Radio: AM/FM Stereo w/6 Speakers

 

[The Real Maverick]

From my truck literature, 2025 AWD Hybrid XL

Included Packages & Options

• Equipment Group 101A$2,220
  • Engine: 2.5L Hybrid
  • Transmission: Power-Split Electric CVT
  • 2.91 Axle Ratio
  • GVWR: 5,320 lbs
  • Tires: P225/65R17 A/S BSW
  • Front Cloth Bucket Seats
  • Radio: AM/FM Stereo w/6 Speakers

Please see this thread in this section and take the poll.

High odds there was mis-printed literature.

Low but greater than zero odds there are truck variants out there. Let's investigate.

https://www.mavericktruckclub.com/f...r-ratios-hf45-transaxle-technical-info.66656/

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