2026 Lexus GX 550 Trim Guide: Every Grade From Signature to Overtrail+ Compared — 349 HP, 9,063-lb Towing

The 2026 Lexus GX 550 is available in six distinct grades, all powered by the same 3.4 L twin-turbo V6 producing 349 peak horsepower and 479 lb-ft of torque through a 10-speed Direct-Shift automatic with paddle shifters. Towing capacity across all grades is 9,063 lbs (4,110 kg). What changes between grades is the configuration — comfort priorities versus off-road hardware, seating layout, suspension calibration, and technology content.

Choosing the right GX 550 grade comes down to answering a straightforward question: how much of your driving happens on paved roads, and how much goes beyond them? The Signature through Executive grades are road-biased luxury SUVs with full seven-person capacity. The Overtrail and Overtrail+ grades are purpose-configured for terrain.

GX 550 Signature

The GX 550 Signature is the foundation of the lineup and a fully loaded vehicle in its own right. Seven passengers are accommodated across three rows with heated and ventilated front seats, driver's seat memory, and synthetic leather upholstery. The 20-inch alloy wheels, power moon roof with power sunshades, heated and leather-wrapped steering wheel on a power-adjustable column, and a 10-speaker audio system with 14-inch Lexus Interface touchscreen provide everything most GX buyers will use daily.

New for 2026, every Signature includes Lexus Safety System+ 3.0 Extended as standard — adding Traffic Jam Assist, Front Cross Traffic Alert, Driver Monitor, and Lane Change Assist to the base package.

• 7-passenger, 3-row seating
• 20-inch alloy wheels
• Heated and ventilated front seats
• 10-speaker Lexus Interface, 14-inch touchscreen
• Power moon roof with power sunshades
• Lexus Safety System+ 3.0 Extended (new for 2026)

GX 550 Premium

The GX 550 Premium builds on the Signature with meaningful comfort and safety upgrades. Heated rear seats, third-row power-folding seating, and a rear door kick sensor for hands-free operation improve day-to-day usability. The Premium also adds 20-inch machined alloy wheels, aluminum scuff plates, silver chrome mouldings, fog lamps, cornering lamps, acoustic front side glass, a multi-colour ambient lighting system, a panoramic view monitor system, and a head-up display.

GX 550 Luxury

The Luxury grade applies a more premium interior finish to the GX foundation. Semi-Aniline leather upholstery covers the front and second rows, front seats gain the massage function, 22-inch alloy wheels replace the 20-inch units, and illuminated aluminum scuff plates and rear sunshades round out the package. A 21-speaker Mark Levinson premium audio system is standard. New for 2026, the Luxury grade adds a digital rear-view mirror.

GX 550 Executive

The GX 550 Executive completes the road-biased lineup in a six-passenger configuration. It replaces the second-row bench with captain's seats and adds a cooling box, a five-setting drive mode select system, automatic running boards, and a fixed dimming panoramic roof. The Executive arrives on 22-inch forged alloy wheels and carries the full suite of premium comfort and safety technologies.

• 6-passenger with 2nd-row captain's seats
• Automatic running boards
• Fixed dimming panoramic roof
• Cooling box
• 22-inch forged alloy wheels

GX 550 Overtrail

The Overtrail is the entry into the trail-capable GX range. It builds on the Signature with 33-inch all-terrain tires on 18-inch alloy wheels, a rear differential lock, an off-road-tuned Adaptive Variable Suspension (AVS) with five drive modes, an Electronic-Kinetic Dynamic Suspension System, front and transmission skid plates, bridge-type roof rails, an onboard air compressor for tire inflation, a multi-terrain monitor with underfloor view, a Panoramic View Monitor, and a pre-wired auxiliary switch bank. The Overtrail is a five-passenger, two-row model with a standard Lexus Interface with Drive Connect and a 14-inch touchscreen.

GX 550 Overtrail+

The Overtrail+ is the most capable GX grade. It adds to the Overtrail with front seat massage function and driver's seat memory, heated rear seats, acoustic side front glass, a 64-colour ambient illumination system, a wireless charging dock, illuminated aluminum scuff plates, a head-up display, a 21-speaker Mark Levinson premium audio system, a digital key for all doors and the back door, a power back door with kick sensor, rear sunshades, and an onboard air compressor. This is the grade for buyers who want the full off-road hardware package combined with a premium interior.

• All Overtrail hardware: 33-in all-terrain tires, rear differential lock, skid plates, AVS with 5 modes
• Adds: front massage seats, heated rear seats, Mark Levinson 21-speaker audio, HUD
• Onboard air compressor for tire inflation

GX 550 Grade Comparison

Your GX 550 Awaits at Lexus of Lakeridge

Every GX 550 brings the same twin-turbo 3.4 L V6 and 9,063-lb (4,110 kg) towing capacity, but the right grade depends on how you plan to use it. Contact the sales team at Lexus of Lakeridge in Ajax to go through the options in person and find the configuration that fits your driving.