2027 Mercedes-AMG GLE 63 S Review: Price & Performance

2027 Mercedes-AMG GLE 63 S Review coverage centers on an entirely new engine underpinning Mercedes-AMG’s most powerful midsize SUV, arriving alongside a broader refresh of the standard GLE lineup. Built around a redesigned twin-turbo V8 with a flat-plane crankshaft, the 2027 Mercedes-AMG GLE 63 S pushes output past the 600-horsepower mark for the first time, positioning it squarely against some of the fastest performance SUVs money can buy. This 2027 Mercedes-AMG GLE 63 S Review covers everything worth knowing, from pricing to what makes this new engine such a significant step forward.

2027 Mercedes-AMG GLE 63 S Review: Overview

The 2027 Mercedes-AMG GLE 63 S sits at the very top of Mercedes-Benz’s refreshed midsize GLE lineup, which received an updated exterior design, a revised cabin, and new technology features as part of this year’s broader update. Notably, there’s no standard, non-S GLE 63 in the lineup — the GLE 63 S remains the sole high-output V8 offering, available in both traditional SUV and swoopier Coupe body styles.

Anyone reading a 2027 Mercedes-AMG GLE 63 S Review before cross-shopping it against rivals like the BMW X5 M or Porsche Cayenne Turbo will find a genuinely reworked performance SUV underneath the familiar GLE 63 badge, built around a new engine architecture rather than simply a mild power bump over the outgoing model.

2027 Mercedes-AMG GLE 63 S Review: Expected Price

Pricing for the 2027 Mercedes-AMG GLE 63 S starts at approximately $140,000, a modest increase over the outgoing model, which recently listed between roughly $142,050 and $151,770 depending on options and Manufaktur personalization. That starting price positions the GLE 63 S to compete directly against the Audi RS Q8, BMW X5 M, and Porsche Cayenne Turbo, all of which occupy a similar six-figure performance SUV price bracket.

Given how heavily optioned many outgoing GLE 63 S models tend to be on dealer lots, buyers using this 2027 Mercedes-AMG GLE 63 S Review to budget a purchase should expect the final transaction price to climb well beyond the advertised starting figure once Manufaktur trim, larger wheels, and other performance packages are factored in.

2027 Mercedes-AMG GLE 63 S Estimated Trim Pricing

• GLE 63 S SUV: from approximately $140,000
• GLE 63 S Coupe: expected modest premium over the SUV body style
• Manufaktur personalization and performance packages: can add substantially to the final price

2027 Mercedes-AMG GLE 63 S Review: Release Date

The 2027 Mercedes-AMG GLE 63 S is scheduled to arrive at U.S. dealerships in early 2027, following the broader reveal of the updated 2027 GLE lineup that took place in mid-2026. Mercedes-Benz has already detailed full specifications ahead of that on-sale window, giving buyers a clear picture of what to expect before the car actually reaches showrooms.

2027 Mercedes-AMG GLE 63 S Review: Engine and Performance

The headline change for the 2027 Mercedes-AMG GLE 63 S is its completely reworked engine: a twin-turbocharged 4.0-liter V8 featuring a new flat-plane crankshaft design, shared with the larger GLE 63 S’s big sibling, the GLS 63. This new M177 EVO engine produces 603 horsepower and 627 pound-feet of torque, with an integrated 48-volt starter-generator adding a further 23 horsepower and 151 pound-feet during short bursts of acceleration.

Mercedes-AMG says the flat-plane crankshaft reduces rotating mass and improves the engine’s ability to rev freely, while upgrades to the intake and exhaust ports, compressor wheel, and turbocharger housing all work together to sharpen throttle response and better harmonize power delivery. Power routes through a 9-speed automatic transmission and Mercedes-AMG’s Performance 4MATIC+ all-wheel-drive system, which offers fully variable torque distribution between the front and rear axles.

2027 Mercedes-AMG GLE 63 S Exhaust and Efficiency

Alongside the new engine, the 2027 Mercedes-AMG GLE 63 S receives an entirely new AMG performance exhaust system specifically tuned to complement the flat-plane V8’s distinct character. Mercedes-AMG notes the engine changes also bring efficiency benefits, helping the updated powertrain meet upcoming emissions regulations without sacrificing the dramatic soundtrack AMG customers expect.

2027 Mercedes-AMG GLE 63 S Review: Horsepower and Acceleration

With 603 horsepower and 627 pound-feet of torque on tap, the 2027 Mercedes-AMG GLE 63 S delivers genuinely serious acceleration for a midsize SUV. While Mercedes-AMG hadn’t published an official 0-60 mph time at the time of writing, the outgoing 577-horsepower model was capable of reaching 60 mph in roughly 3.6 seconds, so the added power of this new engine should push the 2027 model into similarly quick, if not slightly quicker, territory.

Top speed is electronically limited to 174 mph, a substantial jump over the standard GLE lineup’s 130 mph limiter, reinforcing just how much performance separates the GLE 63 S from the rest of the range.

2027 Mercedes-AMG GLE 63 S Review: Fuel Consumption

Fuel economy has never been the priority for a car built around a 603-horsepower twin-turbo V8, and the 2027 Mercedes-AMG GLE 63 S won’t likely change that reputation dramatically. The outgoing GLE 63 S was EPA-rated at approximately 14 to 15 mpg city and 19 to 20 mpg highway, and while Mercedes-AMG’s new flat-plane-crank engine is designed with some efficiency improvements in mind, buyers should still expect fuel consumption figures typical of this segment of high-performance SUV.

For context, the standard GLE lineup’s four-cylinder GLE 350 continues to offer far better efficiency for buyers who prioritize fuel economy over outright performance, reinforcing that the GLE 63 S remains squarely focused on power rather than efficiency.

2027 Mercedes-AMG GLE 63 S Review: Driving Experience

Behind the wheel, the 2027 Mercedes-AMG GLE 63 S benefits from a full suite of chassis technology designed to keep its considerable power and weight in check. Standard air suspension and Mercedes-Benz’s E-Active Body Control system work together to minimize body roll through corners while still delivering genuine ride comfort during everyday driving, and the AMG Performance 4MATIC+ system’s variable torque distribution helps the SUV put its power down confidently regardless of road surface.

Multiple AMG Dynamic Select drive programs, including dedicated Sport, Sport+, and Individual modes, let drivers tailor the GLE 63 S’s throttle response, transmission behavior, and suspension firmness to match their mood or the road ahead, giving the car genuine range between comfortable daily driving and full-attack track use.

2027 Mercedes-AMG GLE 63 S Coupe vs. SUV

Buyers choosing between body styles should note the GLE 63 S Coupe trades some rear headroom for a sportier, more emotional silhouette, with its sloping roofline and shorter rear deck creating a noticeably more dynamic profile than the standard SUV body style, at some cost to outright practicality.

2027 Mercedes-AMG GLE 63 S Review: Exterior Design

Visually, the 2027 Mercedes-AMG GLE 63 S wears a considerably more aggressive face than the standard GLE lineup, with a redesigned front end featuring the AMG-specific radiator grille finished in vertical slats, flanked by LED headlights carrying a unique AMG light signature and three-pointed-star daytime running lights. Black trim elements run along the lower bodywork, further distinguishing the GLE 63 S from its less powerful siblings.

The Coupe variant pushes the styling further still, with a high beltline, muscular shoulders, and a sloping roofline that give it a more planted, emotional stance compared to the standard SUV body style. Buyers can choose from multi-spoke alloy wheels up to 22 inches in diameter, adding to the car’s already substantial road presence.

2027 Mercedes-AMG GLE 63 S Review: Interior and Technology

Inside, the 2027 Mercedes-AMG GLE 63 S benefits from all the technology updates introduced across the broader 2027 GLE lineup, most notably a trio of 12.3-inch displays spanning the width of the dashboard, encompassing the digital gauge cluster, central infotainment system, and a dedicated front passenger display. The entire setup runs on Mercedes-Benz’s new MB.OS operating system, bringing features like AI-assisted search and integrated Google Maps navigation to the cabin.

Despite the expanded screen technology, Mercedes-AMG has thoughtfully retained a number of physical controls throughout the cabin, avoiding the trap of moving every single function into the touchscreen. Seating remains configured for five passengers across both body styles, with the more rakish Coupe taking a modest hit in rear headroom compared to the standard SUV.

2027 Mercedes-AMG GLE 63 S Review: Safety Systems

The 2027 Mercedes-AMG GLE 63 S benefits from an extensive sensor suite shared with the broader GLE lineup, including 10 cameras, five radar sensors, and 12 ultrasonic sensors working together to support features like automatic high-beam assist, adaptive cruise control, lane-keeping assist, lane departure warning, forward collision warning, automatic emergency braking, rear cross-traffic alert, a surround-view camera, and blind-spot monitoring.

Buyers wanting independent, up-to-date crash-test data can check the Insurance Institute for Highway Safety (IIHS), which regularly evaluates midsize luxury SUVs including the GLE alongside its closest rivals.

2027 Mercedes-AMG GLE 63 S Review: Pros and Cons

What We Like About the 2027 Mercedes-AMG GLE 63 S

✓ All-new flat-plane-crank V8 pushes output past 600 horsepower
✓ Genuinely track-capable chassis with E-Active Body Control
✓ Expanded triple-screen MB.OS technology suite
✓ Choice of practical SUV or sportier Coupe body styles
✓ Physical controls thoughtfully retained alongside new screens

What Could Be Better on the 2027 Mercedes-AMG GLE 63 S

✗ Fuel economy remains poor, as expected for this segment
✗ Pricing climbs quickly once options are added
✗ Coupe body style sacrifices meaningful rear headroom
✗ Official 0-60 mph time hadn’t been confirmed at launch

2027 Mercedes-AMG GLE 63 S Review: Main Competitors

The 2027 Mercedes-AMG GLE 63 S competes in one of the most demanding corners of the performance SUV market. The BMW X5 M remains its most direct German rival, offering a similarly potent twin-turbo V8 with its own distinct driving character. The Audi RS Q8 brings a more understated approach to extreme SUV performance, while the Porsche Cayenne Turbo counters with genuinely sports-car-like handling for buyers willing to prioritize dynamics above all else.

Against this field, the 2027 Mercedes-AMG GLE 63 S distinguishes itself through its all-new flat-plane-crank V8, genuinely broad technology suite, and the flexibility of choosing between practical SUV and sportier Coupe body styles, a combination few rivals can match in this segment.

2027 Mercedes-AMG GLE 63 S Review: Final Verdict

Based on everything revealed so far, the 2027 Mercedes-AMG GLE 63 S looks like a genuinely significant step forward for Mercedes-AMG’s midsize performance SUV. The new flat-plane-crank V8, pushing output past 600 horsepower for the first time, gives this car a meaningful edge over the outgoing model, while the broader GLE refresh brings genuinely useful technology and design updates along for the ride.

The trade-offs remain familiar for this segment: thirsty fuel economy and pricing that climbs quickly once options are added. Even so, anyone finishing this 2027 Mercedes-AMG GLE 63 S Review looking for a bottom line will find a genuinely reinvigorated performance SUV that continues to earn its place among the segment’s most formidable nameplates.

2027 Mercedes-AMG GLE 63 S Review Images

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