The 90-series Prado shares the same chassis platform as the 185-series 4 Runner, but the frame has greater durability than that of the Surf. The side frame on the Prado is constructed of fully closed cross-section members, and the inner channels, which these forms are made of, thicker steel plate. The inner channel is made of steel plates inside the side frame that reinforce and strengthen the entire frame.
The front section of the frame has the first independent suspension ever put on a Land Cruiser. Beyond this, of the 2 upper and lower arms, the upper arm is mounted in a higher position than the usual type, which strengthens the overall resistance of the suspension to horizontal G force.
Along with major changes to the suspension, the 90-series also introduced a newly developed 5VZ-FE-type gasoline engine. This 3.4-liter V6 DOHC engine with numerous technical improvements made to the cylinder heads was also more compact and lighter weight. Bringing the two camshafts closer together reduced the relative angle of the intake and exhaust valves, and as a result it was possible to create a pent roof type combustion chamber with less heat loss. Moreover, this engine was tuned for higher performance in the low- to mid- rpm range making it easier to handle.
The diesel engine in the 90-series was inherited from the 1KZ-TE-type engine of the 70-series Prado. Thanks to its compact turbo charger and air-cooled intercooler, this engine got improved output, better fuel consumption, and lower emissions. In addition, with the balance shaft and reinforced durable cylinder block there was also less noise and vibration.
As the 90-series developed new variations were added to the lineup, and more off-road 4x4 mechanisms were added. To cope with increased vehicle weight a new 4-cylinder 3RZ-FE-type gasoline engine was selected, and the 1KZ-FE-type diesel engine was replaced with a direct fuel injection 1KD-FTV-type that has greater output, lower fuel consumption, and cleaner emissions. Moreover, Active TRC was added to the drive train, which helped maintain constant delivery of drive force by automatically applying the brakes to any tire that began to spin when driving on uneven ground, enabling you to take full advantage of the existing traction in the other tires. This made the Prado both safer and more aggressive at the same time.
The right and left sides of the instrument panel design were clearly separated by the center panel. This was a car built for world markets, where the steering wheel could be moved to right or left with a minimum exchange of parts.
The 90-series Prado had the most interior utility of any model in the Land Cruiser series. It has 2 rows of seats, all of which lie flat, so you can easily take it camping.
With the minor change in 2000, the luxury styling of the interior went even further. The luxury specs included wood-like paneling on the instrument panel, an Optitron speedometer and tachometer like on the Land Cruiser 100, and other luxury upgrades.
The 3.4-liter V6 DOHC 5VZ-FE-type engine produced 185PS/30kgm. The addition of a long intake manifold increased the inertial effect, producing fuller torque in the mid- to low-rpm range. Moreover, the latest engine gained even more reliability using a new engine electronics system.
The 1KD-FTV was the latest Land Cruiser in the series, employing a common rail type direct-injection diesel engine with turbo charger and intercooler. The engine specs were 170PS/35.9kgm, which delivered higher power, yet also with improvements in emissions.