Toyota Tundra
4.6L V8 with 310 hp — the smaller Tundra V8. Same cam tower oil leak issue as the 3UR-FE, but less prevalent. Solid engine for moderate truck use.
4.6 V8 — the more frugal Tundra
310 hp V8 as alternative to the 5.7: less power, slightly less consumption, same cam tower issue (less common). Sufficient for light truck use.
Engine Weaknesses 1
Same RTV issue as the 3UR-FE, but less prevalent. Oil on exhaust manifold possible.
Symptoms: Oil smell, oil trail at front of engine
Vehicle Weaknesses 4
$3.4 billion class action settlement. Frame replacement program for certain US states (salt belt). Program ran 15 years from manufacture date.
Front lower ball joints wear at higher mileage. Accelerated with heavy towing.
Emission system valves stick from corrosion. Check engine light, sometimes limp mode. Bypass kit as permanent fix.
Bed bounces over bumps — typical for full-size trucks without payload. Not a defect, design principle.