Toyota Flex Fuel Vehicles

Factory FFV models

Toyota's flex-fuel lineup is small and truck-focused: only two vehicles, the Tundra and the Sequoia, both powered by the 5.7L V8 (engine code 3UR-FBE). The Tundra FFV ran from 2009 through 2019, and the Sequoia FFV from 2009 through 2018. Not every Tundra or Sequoia with the 5.7L V8 is a flex-fuel truck — the FFV variant was a specific powertrain option within the lineup, primarily produced for CAFE compliance on Toyota's largest vehicles.

Toyota has never built a U.S. passenger car or compact SUV as a factory FFV, and no current Toyota or Lexus vehicle ships as flex-fuel. The Tundra redesign for 2022 replaced the 5.7L V8 with a twin-turbo V6, ending Toyota's U.S. flex-fuel production. On the used market, Tundra and Sequoia 5.7L FFVs are abundant in ethanol-friendly states, and they carry a unique engineering detail worth flagging for owners: Toyota sized the injectors generously on FFV versions specifically to preserve full power and torque when running E85 rather than derating output.

Toyota flex fuel models

Model	Year range	Engine	Notes
Tundra	2009–2019	5.7L V8 (3UR-FBE)	Check VIN 5th digit "W"
Sequoia	2009–2018	5.7L V8 (3UR-FBE)

Toyota-specific E85 tips

Halve your oil-change interval on E85.

Toyota's owner's manual explicitly recommends 2,500-mile oil changes when running E85 frequently, versus the standard 5,000-mile interval. This is the most important maintenance difference between gasoline and E85 operation on these trucks.

The FFV was never paired with the supercharger.

Toyota's factory TRD supercharger for the 5.7L V8 is incompatible with the FFV variant. If you see a supercharged Tundra, it is not a flex-fuel truck.

Watch for flex-fuel pump failure TSBs.

Toyota has issued technical service bulletins for erroneous ethanol-content readings caused by in-tank pump failures on FFV Tundras and Sequoias. Symptoms include persistent fuel-trim codes and rough running. Dealer replacement resolves the issue.

No Toyota passenger car is an FFV.

Camry, Corolla, Avalon, RAV4, Highlander, 4Runner — none are factory flex-fuel. If you want a Toyota that runs E85, you are shopping Tundra or Sequoia, full stop.