When you're ready to invest in a Lexus flagship SUV, the decision often comes down to two exceptional models: the GX 550 and the LX 700h. Both deliver the luxury, capability, and technology Lexus is known for—but they differ significantly in size, seating configuration, and how they fit into your Mississauga lifestyle. For many Ontario drivers, the primary question is garage clearance: Can your residential garage accommodate these vehicles, and which footprint better suits your daily needs?
Both the GX 550 and LX 700h deliver go-anywhere capability with refined luxury. The GX 550 brings a 3.4 L twin-turbo V6 engine producing 349 hp and 479 lb-ft of torque, paired with a 10-speed automatic transmission. The LX 700h takes performance further with hybrid-electric technology, combining the same twin-turbo V6 with an electric motor to generate 457 system hp and 583 lb-ft of torque. For buyers in Mississauga neighbourhoods—where garage clearances and driveway dimensions matter—understanding the physical differences between these two SUVs is essential before making your choice.
The most immediate difference between the GX 550 and LX 700h is their physical footprint. While both models share the same 2,850 mm wheelbase, the LX 700h extends further in overall length.
The GX 550 measures 5,005 mm in length, 1,979 mm in width, and 1,921 mm in height. Ground clearance sits at 221 mm, providing strong off-road capability without excessive bulk.
The LX 700h stretches to 5,096 mm in length—91 mm longer than the GX 550. Width remains nearly identical at 1,989 mm, while height measures 1,895 mm. Ground clearance is slightly lower at 206 mm, though still highly capable for Ontario's varied terrain.
For Mississauga driveways and garage doors, these differences matter. The GX 550's more compact length makes it easier to manoeuvre in tight residential spaces, while the LX 700h's extra length requires more clearance both front and back. Both models feature similar turning circles—the GX 550 at 6.0 m—making urban parking and neighbourhood navigation manageable despite their size.
The GX 550 and LX 700h diverge in how they use their interior volume. Both offer three-row seating options, but with different approaches to passenger comfort and cargo flexibility.
The GX 550 provides seating for seven passengers across three rows. Front headroom measures 1,001 mm, with front legroom at 1,047 mm. Second-row passengers enjoy 1,095 mm of headroom and 933 mm of legroom. The third row offers 900 mm of headroom and 810 mm of legroom—adequate for occasional use or younger passengers.
The LX 700h offers similar front-row dimensions, with 960 mm of headroom and 1,044 mm of legroom. Second-row headroom measures 991 mm, with 930 mm of legroom. The LX 700h's third row (when equipped) provides 895 mm of headroom and 790 mm of legroom.
Both models feature power-folding third-row seats, but the LX 700h adds auto-arranging functionality for easier access. The LX 700h also offers a two-row, five-passenger Overtrail+ configuration for buyers who prioritize cargo space over maximum seating.
Cargo flexibility differs significantly between these two flagships, reflecting their different mission profiles.
The GX 550 offers 292 L behind the third row, expanding to 1,138 L with the third row folded. Maximum cargo capacity with both rear rows folded reaches 2,178 L—strong versatility for a seven-passenger SUV.
The two-row LX 700h Overtrail+ maximizes cargo space by eliminating the third row entirely, while three-row configurations provide family-friendly seating with cargo flexibility.
For Mississauga families planning weekend trips to cottage country or winter getaways, both models provide ample room for luggage, sports equipment, and seasonal gear. The GX 550's slightly more compact exterior makes it easier to fit in standard residential garages while still offering strong cargo versatility.
Both flagships deliver strong capability, though with different strengths suited to different uses.
The GX 550 offers a maximum towing capacity of 4,111 kg and a payload capacity of 620 kg. Gross vehicle weight rating (GVWR) reaches 3,190 kg, with a base curb weight of 2,570 kg.
The LX 700h provides a towing capacity of 3,625 kg—slightly lower than the GX 550—with the same 620 kg payload capacity. GVWR sits at 3,380 kg, while base curb weight is 2,840 kg. The LX 700h's hybrid powertrain adds weight but delivers greater system hp and torque.
For Ontario drivers towing boats to Muskoka or hauling trailers to provincial parks, the GX 550's higher towing capacity provides an edge. The LX 700h's hybrid system offers stronger low-end torque for confident launches and better fuel efficiency during daily driving.
Both models feature Lexus Safety System+ 3.0, including Pre-Collision System with Pedestrian Detection, Lane Departure Alert with Steering Assist, Dynamic Radar Cruise Control, and Automatic High Beam. New for 2026, the GX 550 Signature grade and all higher trims now include Lexus Safety System+ 3.0 Extended, adding Traffic Jam Assist, Front Cross Traffic Alert, Driver Monitor, and Lane Change Assist.
The LX 700h includes these same advanced safety technologies, along with Blind Spot Monitor with Rear Cross Traffic Alert and Rear Cross Traffic Brake, Intuitive Parking Assist with Auto Braking, and Panoramic View Monitor with Multi-Terrain Monitor.
Both models feature the Lexus Interface with a 14-inch HD touchscreen (GX 550) or 12.3-inch touchscreen (LX 700h), wireless Apple CarPlay and Android Auto compatibility, and multiple USB charging ports. The LX 700h's available 25-speaker Mark Levinson Premium Audio System elevates the in-cabin experience, while the GX 550 offers a 21-speaker Mark Levinson system on higher trims.
Fuel economy is one of the LX 700h's most significant advantages over the GX 550.
The GX 550 achieves a combined fuel consumption rating of 13.5 L/100 km, with a 79 L fuel tank providing strong range for long-distance Ontario travel.
The LX 700h delivers 11.7 L/100 km—a meaningful improvement over the GX 550. The smaller 68 L fuel tank is offset by better efficiency, and the hybrid system's regenerative braking and electric motor assist reduce fuel consumption during city driving in Mississauga and Greater Toronto Area traffic.
For buyers prioritizing lower operating costs and reduced emissions, the LX 700h's hybrid technology provides clear long-term value.
The GX 550 lineup includes six grades: Signature, Premium, Overtrail, Luxury, Overtrail+, and Executive. Each grade builds progressively on features, with the Overtrail variants emphasizing off-road capability and the Executive offering maximum luxury.
The LX 700h offers four hybrid-specific grades: Overtrail+ (2 Row), Overtrail+ (3 Row), Luxury, and Executive VIP. The two-row Overtrail+ prioritizes cargo space and adventure capability, while the three-row Overtrail+ adds family-friendly seating. The Luxury grade balances refinement with capability, and the Executive VIP is the pinnacle of Lexus luxury.
Both lineups allow buyers to tailor their flagship SUV to specific needs—from off-road performance to family versatility to executive-level comfort.
Choosing between the GX 550 and LX 700h depends on your priorities and how you'll use your flagship SUV.
The GX 550 excels for buyers who need maximum towing capacity, prefer a more compact footprint for easier garage fit and urban manoeuvrability, and want a traditional three-row SUV with strong off-road capability. Its 5,005 mm length makes it easier to accommodate in standard residential garages, while its 4,111 kg towing capacity handles larger trailers and boats with confidence.
The LX 700h appeals to buyers seeking hybrid efficiency for daily driving, advanced technology and greater system hp, and the flexibility of two-row or three-row configurations. Its 5,096 mm length requires more garage clearance, but delivers greater interior refinement and lower fuel consumption for Ontario commuters.
Both models deliver the luxury, capability, and technology that define the Lexus flagship experience. The right choice depends on your priorities: the GX 550's compact versatility and towing strength, or the LX 700h's hybrid efficiency and elevated refinement.
No matter if you're drawn to the GX 550's go-anywhere capability or the LX 700h's hybrid sophistication, Erin Park Lexus in Mississauga invites you to experience both flagships firsthand. Our team can help you assess garage fit, explore trim configurations, and determine which model best suits your Ontario lifestyle. Visit us in Mississauga to discover which Lexus flagship is right for your driveway.
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