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Modified to properly tow?

22K views 57 replies 17 participants last post by  SLS Artemis  
#1 ·
I'm curious to know if anyone has successfully modified their Rav4 Hybrid, (regardless of age or generation) to be able to tow beyond their rated limit. At this time, the only current version that I'm aware of that can pull 3500 lbs is the Trail Gas version.

Do we know if these hybrids can actually tow, as we perceive in our minds the way a 1/2 ton, 3/4 ton etc trucks can?

If they can be modified to get to 3500 lbs or even more, what exactly does it take? Additional radiators, torque converters, turbos? I honestly don't know and would be curious to know.
 
#3 ·
As you say, some gas Rav4 are rated to tow 3500 lb. Highest 'electric' rated is the Rav4 Prime at 2500 lb. Those numbers are from the 2022 e-brochure, which isn't always correct. To get up to 3500 lb. towing in a hybrid, need to change vehicle: Sienna/Highlander hybrids are rated at 3500 lb., and they have 245/243 hp with beefier MG2 motor generators. I am also pondering my towing options and what to do. The 2022 Rav4 Hybrid doesn't have the larger MG2 of the hybrids that are rated at 3500, and legally it will only have its 1750 or 2500 tow capacity depending on model and regardless of any suspension/cooling mods you do. I have concluded to buy something else for towing.
 
#5 ·
The limits are there for safety reasons and manufacturer liability, but not necessarily the mechanical limit of the vehicle.

More than just the power, there are other considerations like vehicle structure, wheels, tires and brakes.

Sure you can keep on upgrading and increasing your vehicle's towing capacity, but it won't be economical. If you know you'll need more towing capability, might as well consider a vehicle designed for it.
 
#7 ·
I’m brand new to the forum. My 22 XSE (Calvary Blue) is on a train somewhere in the Northwest at the moment; scheduled to arrive between 4/9-4/16.

I’ve been looking into towing as well. Although I’m fine with the 1750 tow rating for almost everything, I feel like there might be a time I’d like to tow more, e.g., a mini-camper, which, although many are below 1,750 dry weight, would probably be closer to the 2000 mark with equipment and whatnot. What are your thoughts about exceeding the tow capacity by just a bit for a long distance trip? Stated differently, would you tow this amount on a long distant trip in your RAV4 hybrid? Are there any minor mods you’d recommend just for raising the tow capacity just a bit?
 
#8 ·
What you are asking is: "What is the weakest link with respect to towing and how do I strengthen it?"
Toyota will never give you an answer and anyone else can only offer a guess.
 
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#10 ·
please don’t tow with a rav4. a 1750# weight rating is basically saying this vehicle should never be attached to a trailer. these are commuter rigs, not trucks. suspensions bottom out, brakes get hot, cvts are probably the worse for towing, insurance companies won’t cover you etc etc...


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#11 ·
please don’t tow with a rav4. a 1750# weight rating is basically saying this vehicle should never be attached to a trailer. these are commuter rigs, not trucks. suspensions bottom out, brakes get hot, cvts are probably the worse for towing, insurance companies won’t cover you etc etc...
Complete nonsense. It's perfectly fine within the rating. Which is more than enough to get good use out of a small utility trailer.

It is of course not meant to pull a heavy camper up and down the mountains at 80 mph.
 
#13 ·
just food for thought and for some friendly conversation because most people never think of this, this is coming from DOT folks i’ve worked with on the road. if you happen to get in an accident where the other party is injured, there is almost no chance your going to win a lawsuit with a vehicle loaded beyond the weight listed by the manufacturer and often times insurance will deny a claim. Just something to think about.


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#14 ·
. .. there is almost no chance your going to win a lawsuit with a vehicle loaded beyond the weight listed by the manufacturer and often times insurance will deny a claim.
Yup, just like you won't ever get caught when using heating oil in a diesel car, until you have an accident that has a fuel spill of the wrong color. Overweight towing will be fine, until it isn't.
 
#15 ·
Interesting. I know road inspectors can fine owner and take vehicles off the road if deemed unsafe. Lawsuits are certainly a possibility, especially in the USA but denying an insurance claim due to an accident being directly caused by something such as an overloaded trailer. I guess there are probably lots of reasons to deny an insurance claim but unless it directly affected you then probably never know about it.
 
#16 ·
If you look, you will probably find a clause that says if you are breaking the law, you are not covered. Overloaded would fit and insurance companies have a positive financial incentive to make it fit.
 
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#20 ·
Your location is the big determining factor as to how much your Hybrid Rav will pull, namely between continents. This was one of the big points for me when I was researching to decide if I wanted one and it was brought up that the EU towing capacity is 1500kg (3306.934lb) while in the US it's 1750lb. It's due to what we consider to be "safe under normal use" when we normally want to bomb along an interstate at 80mph under load vs EU where laws cap trailers at around 50-55mph, or rip up/down US mountain passes at that speed vs relatively flat EU. It's more intense to stop under the same load from higher speeds, or going downhill, so we're more limited in towing capacity because of the way we tend to drive in the US. It's the same vehicle, but very different conditions.

Insurance will gladly turn you away if you're involved in an incident where you're towing over the legal limit for your area, so I'm on the side of not testing them and risking my wallet. Just because you can doesn't mean you should, etc.

 
#21 ·
I’d be super curious to see the specs side by side…
one thing I’m actually skeptical about is if the same engine shows same torque and hp, what it doesn’t show is the added things that might make one more capable of towing. I’m pretty sure there isn’t a line under engine that shows oil cooler or power train showing transmission oil cooler…
 
#25 ·
Why put a hitch on it at all if you are just going to haul bikes? The hitch is a 2" receiver which is made to tow trailers, and it having 1,750lbs towing capacity make its main use for towing. "Right tool for the job" would just be a roof rack, or take front wheel off and lay down the back seats for hauling a bike or 2.
 
#30 ·
Towing was a major issue for us too when selecting a new car. The first criterion was hybrid engine, second, towing and third storage space. Then there was a friend who had bought a Camry, a neighbour who is a mechanic who services them and has three toyotas of his own, and being attracted to hybrids on economy grounds + affordability + range and expecting sooner than later a petrol spike would make efficiency a big consideration - this was 18 months ago in Sep 2020!

I came to the conclusion quickly that a Toyota would be the best hybrid given their long design history , and historical reputation for reliability and longevity. But which one? given our former preference of a small car being an Opel Astra.

We first considered the Corolla. However the tiny boot eliminated that. Next was a Camry (or a more expensive Prius) which looked to have a huge boot, excellent economy (fuel and price) and be big enough to tow our small trailer (tare 250 kg). But try as I might I could not find tow ratings for any of these. I finally found the Camry is rated to tow..... 300 kg gross??!!

The why for this I couldnt determine though I did find it was no different for a RAV4 hybrid 2WD or a Prius either. In fact I dont think the latter is rated to tow at all. I have yet to find a coherent explaination. However my guess is the brakes are finely tuned for recharging and 750kg additional weight on the back will confuse them terribly unlike with a conventional ICE engine (explanations welcome here).

Anyway after finding out the complications which apply to older Camry's too we went back to the dealer the next day to try something else rather than buy the Camry that was on the shop floor and I think readily available. After a little digging I found the only option in a hybrid was the RAV4 AWD versions. This meant another 8K AUD more and becoming an apostate of my former religion - rejecting urban assault vehicles which are a menace on inner city streets where we live. But there simply was no other credible choice, the Honda/Kia/Hyundai hybrid equivalents not being available.

The RAV4 AWD on the other hand was rated here to tow 750 kg unbraked and 1500 kg braked (see post number 2 video which is really informative).

Experience so far (unbraked only)..... no problems....trailer + mower = 500 kg approximately .... going up and down a steepish hill on an 90 km round trip no problem.

Some parting points:
  • I have no regrets 'selling out' and buying the RAV4.
  • The boot storage is way larger and easier to access compared to the past when stowing stuff was always a 3-D puzzle leaving the question of where to squeeze in passengers.
  • Hybrid fuel consumption during the latest petrol crisis is virtually a non issue and such a contrast to our friend's gas guzzler ICE land cruiser - not much more room and 4 X the consumption.
  • Safety and automatic features - these came more standard than the North American models and they are indispensible.
  • Parking - with the reversing camera it will fit into the same size spaces as our old small Astra.
  • Footprint - I did a comparison with the Corolla sedan (not the new crossover though I think the same applies). The only real difference was the RAV4 is a few cm wider. All the extra bulk/space is in the elevation...... and the benefit of being less intimidated by trucks on the highway.
In short, it cost a bit more than intended but the fringe benefits have been worth it. And it does the towing job. As they say you get what you pay for.
 
#31 ·
i’m glad to see some people have some common sense in regards to towing with a rav4 on here. these vehicles are not designed with towing as a priority, these are commuter vehicles, they don’t even come with trailer hookups. Hauling some leaves to the landfill on a small utility trailer twice a year is a logical scenario with one of these rigs but the people hauling campers and big enclosed trailers is laughable.
 
#32 ·
Towing a 1500kg camper is not an issue even through the Alps and Pyrenees.
Yes a nice diesel engine or proper turbocharged Gasoline engine will probably work a bit better but for the approximately 5000km we tow each year it is more than adequate.
 
#33 ·
The Sienna, which is also a 2.5L hybrid, can tow 3500 lb., but it also has higher hp rating because of larger MG2. Braking may be heavier duty too. All but Prime Rav4 hybrids are rated 1750 lb. I'd stick with that limit. Ouside the US, tow ratings are often higher for what appears to be the exact same vehicle, but that may come with speed restrictions and expectation of trailer braking. If you are towing 3000 lb. with your US rav4 hybrid and have an accident, you are open to insurance denials and lawsuits. That you may have installed an extra oil cooler and air shocks or whatever will not support your defense at all. As noted, buy a vehicle that is rated for what you need to tow, with some margin.
 
#44 ·
the fact that they don’t even come with a wiring harness tells me they had no intentions in their design for the rav4 to tow anything, let alone the cvt transmission. 4runner/tacoma is a perfect vehicle for anyone that tows 1500-2000 lbs.


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#45 ·

the fact that they don’t even come with a wiring harness tells me they had no intentions in their design for the rav4 to tow anything, let alone the cvt transmission. 4runner/tacoma is a perfect vehicle for anyone that tows 1500-2000 lbs.


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I had a 4Runner for a bit because my Prius Prime was not rated to tow. I had the Prius because the 4Runner got such crappy mileage I could not afford to drive it far. Getting rid of both cars and switching to one saves me at leas $2,000 a year in gas, insurance and depreciation. Selling both cars paid for the RAV4.

Also, the tow hitch and wiring is offered as an option, which tells me that Toyota did design the car with the intent of towing.
 
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#48 ·
the fact you have to pay extra for a harness and a hitch tells me differently.

I guess people here come from different worlds, i use a truck to haul things cause that’s what they are designed for, much like how I don’t use a screwdriver to pound in a nail.


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