{"id":73018,"date":"2026-06-14T21:18:09","date_gmt":"2026-06-15T01:18:09","guid":{"rendered":"https:\/\/www.globalvillagespace.com\/tech\/?p=73018"},"modified":"2026-06-14T21:18:22","modified_gmt":"2026-06-15T01:18:22","slug":"mercedes-amg-gle-and-gls-redefine-performance-with-flat-plane-v8-and-enhanced-efficiency","status":"publish","type":"post","link":"https:\/\/www.globalvillagespace.com\/tech\/mercedes-amg-gle-and-gls-redefine-performance-with-flat-plane-v8-and-enhanced-efficiency\/","title":{"rendered":"Mercedes-AMG GLE and GLS Redefine Performance with Flat-Plane V8 and Enhanced Efficiency"},"content":{"rendered":"

How Does the New Flat-Plane-Crank V8 Alter the Performance Equation for Mercedes-AMG SUVs?<\/p>\n

The introduction of Mercedes-AMG\u2019s flat-plane-crank twin-turbo V8 engine into the GLE and GLS 63 models signals more than a routine powertrain update; it marks a calculated pivot in AMG\u2019s engineering philosophy. While the headline figures\u2014604bhp and 627lb ft of torque, with an additional 23bhp from a 48V mild-hybrid system\u2014suggest a familiar escalation in power, the underlying mechanism is more nuanced. The flat-plane crankshaft, a configuration more commonly associated with motorsport applications, fundamentally alters the engine\u2019s firing order and vibration characteristics. The evidence suggests this design not only enhances throttle response but also smooths power delivery, mitigating the coarse vibrations that have historically plagued high-output V8s.<\/p>\n

Yet, the practical significance of these changes extends beyond mere acceleration metrics. Sub-four-second 0-62mph times and a 174mph top speed, while impressive, are not unprecedented in this segment. What distinguishes this iteration is the claim\u2014still subject to independent verification\u2014that efficiency and driveability have improved in tandem with outright performance. This dual emphasis on power and refinement, if substantiated, would represent a rare convergence in the SUV performance hierarchy, where gains in one dimension often come at the expense of the other.<\/p>\n

Is the Shift Away from Plug-In Hybrids Toward High-Performance V8s a Strategic Reversal or a Transitional Gambit?<\/p>\n

Mercedes-AMG\u2019s decision to prioritize the new M117 Evo V8 over plug-in hybrid architectures invites scrutiny. On the surface, this move appears counter-cyclical, especially as regulatory and market pressures increasingly favor electrification. However, a closer reading suggests this may be less a wholesale reversal than a transitional gambit. The mild-hybrid system, with its integrated starter-generator, reflects a hedged commitment to electrification\u2014one that seeks to extract incremental efficiency and smoothness without the packaging and weight penalties of full plug-in systems.<\/p>\n

This strategy, while potentially effective in the near term, faces structural limitations. The incremental gains in efficiency and emissions reduction offered by mild-hybridization are unlikely to satisfy future regulatory thresholds, particularly in key markets such as the EU and China. Moreover, the continued investment in V8 architecture may be interpreted as a bid to sustain AMG\u2019s brand identity among enthusiasts during a period of technological flux. Whether this approach will prove sustainable or merely defer the inevitable shift to full electrification remains an open question, with the balance of evidence suggesting a limited window for such powertrain strategies.<\/p>\n

What Are the Second-Order Effects of the Chassis and Drivetrain Upgrades?<\/p>\n

Beyond the powertrain, the suite of chassis and drivetrain enhancements\u2014active ride control, upgraded driveshafts, and a rear axle locking system for the GLS\u2014merits closer examination. These interventions are not merely responses to increased torque; they represent a recalibration of the vehicles\u2019 dynamic envelope. Active ride control, for example, is calibrated to reduce body roll, a persistent challenge in high-riding SUVs with significant mass and power. The practical effect, under most conditions, is likely to be a perceptible improvement in composure during aggressive cornering, though the extent to which this narrows the gap with lower, lighter performance vehicles remains contested.<\/p>\n

The rear axle locking system in the GLS, ostensibly designed to boost agility, raises further questions about the trade-offs between handling sharpness and ride comfort. While such systems can deliver tangible benefits in specific scenarios\u2014tight corners, rapid directional changes\u2014their real-world utility for the typical luxury SUV buyer may be more limited. The evidence here is mixed: some drivers may appreciate the added responsiveness, while others could find the system\u2019s interventions intrusive or at odds with the vehicle\u2019s luxury remit.<\/p>\n

Who Stands to Gain or Lose from These Changes\u2014And Why Does It Matter?<\/p>\n

The primary beneficiaries of these upgrades are likely to be a specific subset of AMG\u2019s clientele: those who demand both headline performance and a degree of refinement previously unavailable in this segment. For these buyers, the combination of motorsport-derived engineering and luxury SUV practicality offers a compelling, if niche, value proposition. However, there are less obvious stakeholders. Dealers and service networks, for example, may face new challenges related to the complexity of the flat-plane V8 and its supporting systems, with implications for maintenance costs and long-term reliability.<\/p>\n

Conversely, the broader market impact may be muted. The high price point and specialized appeal of these models limit their influence on mainstream SUV trends. More consequential, perhaps, is the signal these vehicles send about AMG\u2019s brand trajectory\u2014one that remains tethered to combustion performance even as the industry narrative shifts toward electrification. For informed observers, the key takeaway is not the raw performance numbers, but the strategic ambiguity they represent: a brand hedging its bets, seeking to satisfy legacy expectations while preparing\u2014however reluctantly\u2014for a fundamentally different automotive future.<\/p>\n","protected":false},"excerpt":{"rendered":"

\"Mercedes<\/a><\/p>\n

Potent new powerplant is also said to improve driveability and efficiency<\/p>\n

\n

Mercedes-AMG has\u00a0upgraded the flagship versions of the GLE<\/a> and GLS<\/a> SUVs with its new flat-plane-crank twin-turbo V8 engine as part of a range of mid-life updates.<\/p>\n

Mercedes’ performance division has been introducing the new mild-hybrid M117 Evo powerplant throughout its line-up amid a move away from plug-in hybrids to V8 engines.<\/p>\n

While the outgoing versions of the GLE 63 and GLS 63 were powered by a previous-generation V8, the upgrade to the new 604bhp engine is intended to improve their efficiency and the driving experience.<\/p>\n

Key to the new V8 unit is a motorsport-inspired flat-plane crankshaft, along with a revamped firing order for the cylinders, which is intended to reduce vibration and smooth out the power delivery.<\/p>\n

There’s also an upgraded fuel injection system, new air intake and exhaust ports, a reworked camshaft and a revised turbocharger housing.<\/p>\n

\"Mercedes-AMG<\/p>\n

The V8 produces 604bhp and 627lb ft of torque on its own but it is supplemented by a 48V mild-hybrid integrated starter-generator that can add an extra 23bhp and smooths out the delivery of torque.<\/p>\n

The new V8 enables both of the 63 SUVs to accelerate from 0-62mph in less than four seconds and they have identical top speeds of 174mph.<\/p>\n

Both cars also receive a range of other updates, including a revamped exhaust system that automatically adjusts the flaps to boost the sound of the engine.<\/p>\n

In addition, there’s an updated active ride control system to reduce body roll, while the front and rear driveshafts have been upgraded to cope with the new V8’s high levels of torque. The GLS also features a rear axle locking system to boost agility.<\/p>\n

The GLE Coup\u00e9 and SUV and the GLS gain new front ends with a bespoke AMG grille, larger air intakes and revamped lights. The GLE 63 rides on wheels of up to 22in in diameter, with the GLS’s rising to 23in<\/p>\n<\/div>\n","protected":false},"author":1,"featured_media":73019,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":{"footnotes":""},"categories":[2,137],"tags":[],"class_list":["post-73018","post","type-post","status-publish","format-standard","has-post-thumbnail","category-featured","category-news"],"_links":{"self":[{"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/posts\/73018","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/comments?post=73018"}],"version-history":[{"count":1,"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/posts\/73018\/revisions"}],"predecessor-version":[{"id":73020,"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/posts\/73018\/revisions\/73020"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/media\/73019"}],"wp:attachment":[{"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/media?parent=73018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/categories?post=73018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.globalvillagespace.com\/tech\/wp-json\/wp\/v2\/tags?post=73018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}