6th Generation Toyota RAV4 Master Thread

CIF

CIF

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So the plug-in model for the 6th generation Rav4 not only gets the 6th generation Toyota hybrid system, it also gets noticeable updates to the A25A engine itself. On the plug-in model the A25A engine block and cylinder head have been strengthened, and the engine girdle has also been strengthened. This is the first time we see major improvements to a TNGA gas engine. The T24 doesn't really count as that's just basically an A25A modified for turbo application. All of these updates to the A25A on the plug-in model supposedly significantly improve the noise, vibration and harshness of the gas engine part of the plug-in system.

I personally think this is unfair and disappointing that the regular hybrid models also didn't get these updates to the A25A gas engine. TNGA engines, transmissions and platforms have been quite disappointing in many ways since coming to market and haven't come close to living up to the hype that Toyota had when it unveiled its TNGA engines, transmissions and platforms.

All TNGA gas engines desperately need updates in a variety of categories, and now that we get some updates to the A25A, it is limited right now exclusively to the 6th generation Rav4 plug-in only. We don't even have an idea of if or when these updates will come to any other Toyota or Lexus models using the A25A engine.

I am glad though that by going all hybrid with the new Rav4 Toyota has eliminated the 8 speed auto transmission. The various 8 speed auto transmissions that Toyota and Lexus use are some of the worst transmissions in Toyota history. Toyota needs to desperately remove all of these 8 speed auto transmissions out of their lineup. The only one that I can't speak to is the 8 speed GR auto transmission as that's the only one I haven't driven amongst all of the 8 speeds Toyota and Lexus are using.
 
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NomadDan

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I suspect any changes to the A25 will eventually make it to other models as well. It’s probably just a slow rollout.

It’s interesting to hear about the changes to the A25 though. I thought the new 1.5T was supposed to replace the A25 in the not to distant future.
 
CIF

CIF

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NomadDan said:
I suspect any changes to the A25 will eventually make it to other models as well. It’s probably just a slow rollout.

It’s interesting to hear about the changes to the A25 though. I thought the new 1.5T was supposed to replace the A25 in the not to distant future.
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With this development we just don't know. If all of the TNGA engines were due to be replaced soon by Toyota's next-generation engines, then why spend the time, money and human resources significantly upgrading the A25A in this case?

Since the Akio Toyoda era, there have been many things that Toyota has or hasn't done that have not matched previous Toyota history. So I honestly have no idea if other models will get this updated A25A, or if this was some strange one-off update before all the next-generation engines start coming.
 
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Sulu

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CIF said:
With this development we just don't know. If all of the TNGA engines were due to be replaced soon by Toyota's next-generation engines, then why spend the time, money and human resources significantly upgrading the A25A in this case?

Since the Akio Toyoda era, there have been many things that Toyota has or hasn't done that have not matched previous Toyota history. So I honestly have no idea if other models will get this updated A25A, or if this was some strange one-off update before all the next-generation engines start coming.
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I believe that as Toyota ramps up production of the new engines, it will take some time for the new engines to reach full production levels. And older models -- such as this new RAV4 -- will still use the old TNGA engines (existing models will have to have engine compartments and mounts changed to allow the new engines), so there will have to be some overlap of old TNGA engines and the new engines. So expect to see the A25 and T24 to stick around for some time.
 
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ssun30

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From what I heard from the Chinese market, the mid-life updates to the Dynamic Force family are mainly to achieve faster and more homogeneous combustion. The strengthening might be related to the higher peak combustion temperature and pressure. China 6b and Euro 6d emissions cycles forced them to install GPFs on all their hybrid engines, but their early GPF designs clogged up a lot (2022-2024 models). They introduced an expensive fix to the GPF to burn off particulates at lower temperatures in 2024. With the 2026 refresh, the new engines now completely remove GPFs while complying with all existing regulations. These changes are not necessary to the gas models since their GPFs are hotter and more effective at particulate burn off.

The next-gen engines will have GPFs integrated into the catalytic converter to comply with Euro 7. I think Toyota is delaying DF refreshes in markets without GPF requirements and will directly switch to the next-gen when they are ready.
CIF said:
So the plug-in model for the 6th generation Rav4 not only gets the 6th generation Toyota hybrid system, it also gets noticeable updates to the A25A engine itself. On the plug-in model the A25A engine block and cylinder head have been strengthened, and the engine girdle has also been strengthened. This is the first time we see major improvements to a TNGA gas engine. The T24 doesn't really count as that's just basically an A25A modified for turbo application. All of these updates to the A25A on the plug-in model supposedly significantly improve the noise, vibration and harshness of the gas engine part of the plug-in system.

I personally think this is unfair and disappointing that the regular hybrid models also didn't get these updates to the A25A gas engine. TNGA engines, transmissions and platforms have been quite disappointing in many ways since coming to market and haven't come close to living up to the hype that Toyota had when it unveiled its TNGA engines, transmissions and platforms.

All TNGA gas engines desperately need updates in a variety of categories, and now that we get some updates to the A25A, it is limited right now exclusively to the 6th generation Rav4 plug-in only. We don't even have an idea of if or when these updates will come to any other Toyota or Lexus models using the A25A engine.

I am glad though that by going all hybrid with the new Rav4 Toyota has eliminated the 8 speed auto transmission. The various 8 speed auto transmissions that Toyota and Lexus use are some of the worst transmissions in Toyota history. Toyota needs to desperately remove all of these 8 speed auto transmissions out of their lineup. The only one that I can't speak to is the 8 speed GR auto transmission as that's the only one I haven't driven amongst all of the 8 speeds Toyota and Lexus are using.
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