Full-time four-wheel drive is standard on the Titan XD. Full-time four-wheel drive gives added traction for safety in all conditions, not just off-road, like the only system available on the Tundra. Four-wheel drive of any type costs extra on the Tundra.
The Titan XD has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. A system to reveal vehicles in the Tundra’s blind spot costs extra.
To help make backing out of a parking space safer, the Titan XD has standard Rear Cross Traffic Alert, helping the driver avoid collisions. Toyota charges extra for Rear Cross Traffic Alert on the Tundra and its not available on the SR.
The Titan XD’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Tundra doesn’t offer a driver alert monitor.
Both the Titan XD and the Tundra have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, lane departure warning systems, rearview cameras, available daytime running lights and around view monitors.

