The hood design, grill, greenhouse, and sides are similar to a 2006-present Mercedes-Benz M Class W164; while Mercedes-Benz GLK-Class influences are seen on the crease on the sides and the rear. The bi-xenon headlights are much like that of the 2002-2006 Volkswagen Touareg, but with added LED turning signals. The engine badge on the side reads V12, just like the one on the Schafter. The interior is similar to Habanero's, but the steering wheel bears a Benefactor logo instead of Albany's or Emperor's.
Although the Serrano and the Huntley Sport compete for the fastest SUV, the Serrano is considered to be better because it has a higher top speed, and is easier to use on off-road courses. In terms of handling, the Serrano's cornering performance is average due to its excess weight, and the Serrano tends to suffer from understeer around tight bends. It is, however, easy to drive when used properly, having a similar size to that of the Rebla.
The Serrano is stated to be fitted with a V12, which is laid in a front engine, all wheel drive (50% front, 50% rear torque distribution) layout. The actual engine is, however, modeled as a turbocharged twin cam Inline-4. Its engine sound appears to be similar to that of the Rebla, but with a rather loud sound (probably due to the turbocharger).
The modified Serrano improves over the existing one's performance with a significantly lighter weight, and improved engine output and brakes, allowing it to corner better, brake in shorter distances and move faster. These traits rank the modified Serrano as one of the better performing SUVs in the game with a higher top speed.
The Ballad of Gay Tony Edit
A modified version of the Serrano is available with a full bodykit and lowered suspension, a custom chromed grille with a large Benefactor emblem in the middle, and wheels resembling those of the Banshee wrapped in low-profile tires. It also comes with tinted windows, and may have a two-tone color with the roof and part of the hood being a metallic variant of the vehicle's main color, just like the modified Schafter.