Both the Grand Highlander and the GLS have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors, available all wheel drive and around view monitors.
Compare the2025 Toyota Grand HighlanderVS 2025 Mercedes GLS
Safety
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Warranty
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Toyota’s powertrain warranty covers the Grand Highlander 1 year and 10,000 miles longer than Mercedes covers the GLS. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 5 years or 60,000 miles. Coverage on the GLS ends after only 4 years or 50,000 miles.
Toyota pays for scheduled maintenance on the Grand Highlander for 2 years and 25000 miles. Toyota will pay for oil changes, tire rotations, air filter replacements, cabin filter replacement, brake fluid replacement, inspections, and any other required maintenance. Mercedes doesn’t pay scheduled maintenance for the GLS.
There are over 3 times as many Toyota dealers as there are Mercedes dealers, which makes it much easier should you ever need service under the Grand Highlander’s warranty.
Reliability
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A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the Grand Highlander’s reliability 39 points higher than the GLS.
J.D. Power and Associates’ 2024 Initial Quality Study of new car owners surveyed provide the statistics that show that Toyota vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks Toyota above average in initial quality. With 14 more problems per 100 vehicles, Mercedes is rated below average.
J.D. Power and Associates’ 2024 survey of the owners of three-year-old vehicles provides the statistics that show that Toyota vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Toyota second in reliability, above the industry average. With 71 more problems per 100 vehicles, Mercedes is ranked 21st.
From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that Toyota vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Toyota second in overall reliability. Mercedes is ranked 29th.
Fuel Economy and Range
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On the EPA test cycle the Grand Highlander gets better mileage than the GLS:
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|
MPG |
| Grand Highlander |
|||
|
|
FWD |
LE/XLE 2.5 4-cyl. Hybrid |
37 city/34 hwy |
|
|
|
Limited 2.5 4-cyl. Hybrid |
36 city/32 hwy |
|
|
|
2.4 turbo 4-cyl. |
21 city/28 hwy |
|
|
AWD |
LE/XLE 2.5 4-cyl. Hybrid |
36 city/32 hwy |
|
|
|
Limited 2.5 4-cyl. Hybrid |
35 city/31 hwy |
|
|
|
2.4 turbo 4-cyl. Hybrid |
26 city/27 hwy |
|
|
|
LE/XLE 2.4 turbo 4-cyl. |
21 city/27 hwy |
|
|
|
Limited/Platinum 2.4 turbo 4-cyl. |
20 city/26 hwy |
| GLS |
|||
|
|
AWD |
580 4.0 turbo V8 Hybrid |
14 city/19 hwy |
|
|
|
600 4.0 turbo V8 Hybrid |
13 city/18 hwy |
|
|
|
3.0 turbo 6-cyl. Hybrid |
19 city/24 hwy |
Transmission
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The Grand Highlander offers an available continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The GLS doesn’t offer a CVT.
Chassis
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The Toyota Grand Highlander may be more efficient, handle and accelerate better because it weighs about 1250 to 1300 pounds less than the Mercedes GLS.
The Grand Highlander is 3.5 inches shorter than the GLS 450, making the Grand Highlander easier to handle, maneuver and park in tight spaces.
Passenger Space
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The Grand Highlander offers optional seating for 8 passengers; the GLS can only carry up to 7.
For enhanced passenger comfort on long trips the Grand Highlander’s middle and third row seats recline. The GLS’ third row seats don’t recline.
Cargo Capacity
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The Grand Highlander’s cargo area provides more volume than the GLS.
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|
Grand Highlander |
GLS |
| Behind Third Seat |
20.6 cubic feet |
17.4 cubic feet |
| Third Seat Folded |
57.9 cubic feet |
42.7 cubic feet |
| Second Seat Folded |
97.5 cubic feet |
84.7 cubic feet |
Towing
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A Trailer Sway Control (TSC) is standard on the Grand Highlander, using the Enhanced Vehicle Stability Control sensors to detect trailer sway, then uses individual brakes to counteract any swaying and help keep the tow vehicle and trailer steady. A trailer sway program costs extra on the GLS.
Ergonomics
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To improve rear visibility by keeping the rear window clear, the Grand Highlander has a standard rear fixed intermittent wiper with a full on position. The rear wiper standard on the GLS only has an intermittent setting, so in a hard rain visibility isn’t as good.
Model Availability
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The Grand Highlander is available in both front-wheel drive and four-wheel drive configurations. The GLS doesn’t offer a two-wheel drive configuration.
Recommendations
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Consumer Reports® recommends the Toyota Grand Highlander, based on reliability, safety and performance. The Mercedes GLS isn't recommended.
The Grand Highlander was chosen as a Car and Driver’s “Top Ten” for 2024. The GL/GLS hasn’t been picked since 2017.
The Toyota Grand Highlander outsold the Mercedes GLS by almost two to one during 2023.