There are people who still believe in the 2025 Toyota Tundra Diesel, although bosses of the Japanese company rubbished these rumors a few times. Still, new speculations emerge every year, with fresh sources and indications. This time, the reason is the Tundra HD truck. Well, this one is not confirmed yet, but if Toyota wants to be competitive, this version of the truck needs an oil burner. Series 2 trucks by US manufacturers deliver the best performance when a diesel engine is under the hood.
Nevertheless, the 2025 Toyota Tundra diesel is still unlikely. First – the Japanese truckmaker is going green and decreasing emissions on their vehicles. This is a long process and many diesel engines are already unavailable anymore. In the United States, you won’t find a new Toyota with an oil burner. The ultimate goal is the zero-emission lineup.
Not only Toyota but also other companies are facing a lot of pressure to decrease emissions. However, diesel engines are hard workers and they survive in segments where owners need them. Heavy-duty truck class is one of them. The reason number 2 to suspect in the Tundra HD diesel truck is the lack of a V8 oil burner. Ram uses Cummins, GM uses Duramax, and Ford uses Powerstroke. Toyota will need to build a new unit or experiment with some of these existing powerplants.
2025 Toyota Tundra Diesel Specs
We can find a few possible engines for the 2025 Toyota Tundra Diesel truck. Those are all old units, but anything the company chooses needs a revisit. For example, a 2.8-liter or 3.0-liter D-4D unit can be suitable, but only if engineers add turbocharging. In the past few years, US truckmakers packed their half-ton pickups with 3.0 mills. They are already dropping them, so that is another reason why we think it is late for the Tundra diesel.
A V8 for the Tundra HD might be a Cummins 5.0-liter turbodiesel. This engine is a bit old but still can show off with 330 hp and 550 lb-ft of torque. It is not a match to the Ford F-350 and Ram 3500, which can do 1,000+ pound-feet of twist. Still, those are fine numbers for the Series 2 HD segment. A 4.5-liter V8 served Land Cruiser for a long time. Now, the company is using a 3.3-liter turbodiesel, rated at 302 hp and 515 lb-ft. This one is probably the most realistic powertrain for a diesel truck.
Oil Burner vs Hybrid
You all know the answer to this question. Hybrid engines are popular thanks to strict emission regulations and companies are rushing to replace ordinary configurations with new ones. It is not going so fast in the truck segment, where we don’t see too many new hybrids and diesel setups are still irreplaceable. Nevertheless, all midsize pickups dropped oil burners. The latest ones are Chevy Colorado and Jeep Gladiator. Meanwhile, the first hybrid midsize trucks arrive at dealerships early in 2024.
In the full-size segment, the Ram 1500 is still available with a 3.0-liter turbodiesel, while Ford and GM are now using only petrol engines. Even Nissan had a diesel unit for the Titan XD. Tundra is already using the iForce Max hybrid system and owners are praising its performance.
The bigger the truck is, the more power and torque it requires to work. That is why the heavy-duty class relies on diesel power. Big V8s are dominating there. Petrol units with the same number of cylinders are not a match to 6.6 and 6.7 turbocharged oil burners.
Although there are still more diesel engines than hybrids, the circumstances are about to change in the near future. While one class is emerging, another one is slowly sliding into history. It is just a matter of time before we will say goodbye to the last diesel engine, and we’re sure it will be a truck.
Why We Want 2025 Toyota Tundra Diesel?
Hybrid engines are the future of the automotive world. Those will be eventually replaced with electric units. However, not only truckers are missing old-school powertrains with natural power and engine roar. EVs are silent plants. We can talk about pollution and that making batteries costs a lot more. Plus, there is a huge waste in the process. But, when it comes to driving a vehicle, those won’t pollute the Earth. So, truckers will have to accept the process and realize that one day diesel engines will be cut out. Not only oil burners but also petrol powertrains. Batteries are replacing internal combustion mills, and the process in now irreversible.
In the meantime, we can still enjoy old-school configurations and companies surprise us with throwbacks to some cool times. Toyota won’t do that with a diesel engine for the pickup truck, but you can see revivals of some old vehicles. Also, we can see deliveries of new parts for the Supra MK2 started. Fans are not giving up on their old and reliable cars, as they won’t do with internal combustion engines when electrification takes over.