What is the real MPG difference between the new 2025 Toyota Tundra TRD Rally twin-turbo V6 and an old TRD Pro V8 Tundra? We find out by driving both of these pickup trucks side by side on our Denver 100 mpg loop. The V8 did better than we expected, but the new truck is still much more efficient. Let’s dig in!
The 2025 Tundra TRD Rally is a new trim for this year. It’s based on a TRD Off-Road trim, but it adds some luxurious appointments and distinct yellow, orange, and red accents inside and out. It means that this truck has an off-road tuned suspension with Bilstein shock. It has locking rear differential. The 33-inch tires are not very aggressive, and it has an active air dam that deploys above 40 MPH.
The new truck has a 3.4L twin-turbo V6 with a rating of 389 hp and 479 lb-ft of torque. It’s mated to a 10-speed automatic transmission. You can also get a TT V6 hybrid powertrain, but this truck does not have it.
The Denver 100 MPG loop is a highway / tollway route all the way around Denver, Colorado. The total route distance is 111 miles. We normally average a bit above 60 MPH on this loop. The majority of the route has a 65 MPH or 75 MPH speed limits.
The old truck is my personal 2019 Toyota Tundra TRD Pro. It’s all stock with the exception of a raised air intake. This truck has a stock ride height and stock 32-inch all-terrain tires. These iForce V8-powered trucks are not known for their fuel economy, but it has plenty of power and a great TRD dual exhaust system.
The V8 is rated at 381 hp and 401 lb-ft of torque. It is mated to a 6-speed automatic transmission.
The results are a bit surprising. The V8-powered truck returned 18.9 MPG on this Denver 100 loop. This is considerably better than the 17 MPG EPA rating for this truck.
The new truck registered 22.6 MPG at the pump. This is also a bit better than the EPA suggests. This is nearly a 4 MPG improvement over the old truck.
Do you think this is a great improvement or do you want the new truck’s efficiency to be even better?
