The Bacalar spearheads a return to coachbuilding by Bentley Mulliner and features an enhanced version of Bentley’s peerless 6.0-litre W12 TSI engine, the most advanced 12-cylinder engine in the world.

Since the first introduction of the twin-turbocharger W12 in 2003, the engine’s refinement has seen an increase of up to 27 percent in power, 38 percent in torque and a reduction of 38 percent in emissions.

This has been realised through the evolution and optimisation of the crankcase, improvements in the oil and cooling systems, twin-scroll turbocharging technology and more effective injection and combustion processes.

Sources from Bentley told this correspondent that these improvements resulted from several initiatives taken by the company. It may be recalled that the latest generation of W12 was launched in the Bentayga in 2016. “A thoroughly reworked engine included a crankcase 30 percent stronger than its predecessor, while the cylinder surfaces were coated to reduce friction and improve corrosion resistance. A low-alloy steel coating is applied to the bores using an Atmospheric Plasma Spray (APS) process. Improvements were also made to the cooling system, with the engine featuring three separate coolant circuits. The first is designed to bring the cylinder heads up to optimum operating temperature as quickly as possible for best engine performance and low emissions. The second cool the engine block and oil system, while the third handles the turbochargers’ thermal load. Each system has a dedicated water pump, allowing optimised individual control,” sources said.

Twin-scroll Turbocharging

Twin-scroll turbochargers minimise turbo response time and provide a more efficient exhaust package. The exhaust assemblies for the three front and three rear cylinders are separate from one another, which feed the twin-scroll impellers. The turbocharger housing is welded directly to the exhaust manifolds and feature integrated speed sensors, allowing the engine to monitor turbo performance for maximum efficiency.

Effective Injection

The W12 combines high-pressure direct fuel injection (200 bar injection pressure) with low-pressure port injection (six bar). The combination of these two systems maximises refinement, lowers particulate emissions and optimises power and torque delivery.

Interestingly, each W12 engine is hand-built over 6.5 hours by a team of 45 craftspeople before undertaking a highly sophisticated test regime of over an hour via three specialist diagnostic machines during the engines assemble.

According to the sources, there were three specialist diagnostic machines with sophisticated test regime.

Leak Test

The leakage test is conducted by pressurising each of the systems for fuel, oil and water individually. The different cavities are pressurised to values between 0.2 – 5.0 bar respectively and then measured whilst the pressure decays over time. The reduction in pressure versus time represents the quality of the sealing of the engine assembly. If the pressure drops faster than expected, a leak is indicated. A special fluid is sprayed on to the exterior of the engine to pin-point any leakage paths.

Cold Test

The engine is loaded on to a testbed plate, and connections are made to the engine loom and all engine systems, whilst a large electric motor couples to the engine via the crankshaft. “Motoring” the engine via the crankshaft allows the testbed to collect data from a suite of sensors. The facility measures 600 individual properties and characteristics of the engine during a 15-minute cycle. Due to the low running speed of 120 RPM for the test, finer details and any inconsistencies can be identified thanks to a sample rate that highlights even the briefest of anomalies that would be invisible if the engine was firing or running at speed. This fine detail analysis is also valuable for confirming the precise timing of the engine. Using positioning information from sensors on the crankshaft, crankcase and camshafts, and cylinder compression values, the Cold Test can confirm the engine timing is accurate and, therefore, achieve the best possible combustion cycle.

Hot Test

When the engine arrives for hot testing, a UV dye is added to the engine to help identify any leaks. The coolant and fuel system are pressurised with air and nitrogen, respectively, for a final check before introducing the necessary fluids ready for testing. The engine is cranked to build oil pressure before the ignition system is energised and then left to idle whilst the engine test technician listens for any refinement issues and checks for leaks with a UV lamp. Sources said that each W12 is then tested for a minimum of 21.5 minutes and runs up to 3,800 rpm with a maximum load of 300 Nm. One in every one hundred engines receives a full eight-hour power test, achieving 6,000 RPM, and must achieve 900Nm.

The three tests that the Bacalar engine has already been put through are part of Bentley’s exceptional quality control processes. These testing procedures provide feedback on the quality of each engine and provide multiple checkpoints to catalogue the exact behaviour of each engine from the moment of manufacture. Since the installation of the three testbeds in 2002, over 100,000 W12 engines have been handcrafted in Crewe and passed through the test facility.

Technology Advancements

Bentley’s legendary 6.0-litre twin-turbocharged W12, created in 2002, has evolved into the latest iteration of the W12 engine used across today’s current model range. The unique W-configuration means that the engine is 24 percent shorter than an equivalent V12, benefitting packaging and maximising usable cabin space.

The latest generation of W12 was launched in the Bentayga in 2016. A thoroughly reworked engine included a crankcase 30 percent stronger than its predecessor, while the cylinder surfaces were coated to reduce friction and improve corrosion resistance. A low-alloy steel coating is applied to the bores using an Atmospheric Plasma Spray (APS) process.

The W12 combines high-pressure direct fuel injection (200 bar injection pressure) with low-pressure port injection (six bar). The combination of these two systems maximises refinement, lowers particulate emissions and optimises power and torque delivery.

Twin-scroll turbochargers minimise turbo response time and provide a more efficient exhaust package. The exhaust assemblies for the three front and three rear cylinders are separate from one another, which then feed the twin-scroll impellers. The turbocharger housing is welded directly to the exhaust manifolds and feature integrated speed sensors, allowing the engine to monitor turbo performance for maximum efficiency.

Bentley’s variable displacement system shuts down half of the engine under defined conditions. Intake and exhaust valves, fuel injection and ignition are all shut down on defined cylinders, with the engine running as a six-cylinder for improved efficiency. The system will run in this mode in gears three to eight, below 3,000 rpm and up to 300 Nm torque output.

The first Bacalar engine followed the same build process in Bentley’s centre of excellence for W12 engines, ensuring the same level of quality and expertise before final testing, sources added. (MT)

Sustainable, Recyclable Electric Motors

Bentley Motors has announced a three-year research study that aims to revolutionise the sustainability of electric motors. Supporting Bentley’s commitment to offering only hybrid or electric vehicles by 2026, the result could see recycled rare-earth magnets used in selected ancillary motors for the very first time.

The study, titled RaRE (Rare-earth Recycling for E-machines), intends to build on work completed at the University of Birmingham in devising a method of extracting magnets from waste electronics. The project will also scale up this process and repurpose the extracted magnetic material into new recyclable magnets for use within bespoke ancillary motors.

Adding to the sustainability benefits that RaRE will provide, the bespoke motors created through this method promise to minimise complexity through manufacture while supporting the development of the UK supply chain for both mass production and low volume components.

Dr Matthias Rabe, Member of the Board for Engineering, Bentley Motors, said, “As we accelerate our journey to electrification, offering only hybrid or electric vehicles by 2026, and full electric by 2030, it is important that we focus on every aspect of vehicle sustainability, including sustainable methods of sourcing materials and components. RaRE promises a step-change in electrical recyclability, providing a source of truly bespoke, low voltage motors for a number of different applications, and we are confident the results will provide a basis for fully sustainable electric drives.”

This study will run in parallel to Bentley’s OCTOPUS research programme, which aims to deliver a breakthrough in e-axle electric powertrains, utilising a fully integrated, free from rare-earth magnet e-axle that supports electric vehicle architectures.

As with OCTOPUS, RaRE is an OZEV funded project delivered in partnership with Innovate UK, which brings together the following partners with distinct roles and responsibilities. Bentley Motors will lead specification setting and test protocol development and support the design and manufacturing activities, while Hypromag will scale up the recycling processes developed at the University of Birmingham and convert the extracted powders to sintered magnets with properties designed around those required for the auxiliary motors. On its part, Unipart Powertrain Applications Ltd will lead the development of manufacturing scale-up routes to ensure facilities and processes defined are suitable for volume automotive manufacture.

Advanced Electric Machines Research Ltd will lead the motors’ design and development, while Intelligent Lifecycle Solutions Ltd will pre-process computer hard disk drives to remove the rare earth magnet containing components from the waste, which will be shipped to Hypromag for removal of the rare earth magnets. The University of Birmingham will provide cast alloys, which will be fed into Hypromag to blend with secondary materials to produce sintered magnets. (MT)

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Mumbai-headquartered SUV major Mahindra & Mahindra has upgraded its popular offering, the Scorpio-N Z8L variant, with Level 2 Advanced Driver Assistance Systems (ADAS) tech.

This will see the Scorpio-N Z8L variant coming with Forward Collision Warning, Automatic Emergency Braking, Adaptive Cruise Control with Stop & Go, Smart Pilot Assist, Lane Departure Warning, Lane Keep Assist, Traffic Sign Recognition and High Beam Assist features.

The ADAS tech will further enhance safety quotient for the Scorpion-N with exclusive features such as Speed Limit Assist and Front Vehicle Start Alert, marking a first for Mahindra ICE SUVs.

Furthermore, the company has also expanded the Scorpio-N line-up with the introduction of the Z8T variant at INR 2.02 million. The new variant will sit between the Z8 and Z8L variants. It comes with a compelling mix of premium features, including R18 diamond-cut alloy wheels, a 12-speaker Sony-branded audio system, front camera, front parking sensors, 6-way powered driver seat, electronic parking brake (EPB), ventilated front seats and an auto-dimming IRVM.

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Maruti Suzuki India, the country’s largest passenger vehicle manufacturer, has achieved a new milestone in its aftersales service. The company recorded servicing (free and paid) over 2.45 million vehicles in May, the highest in a single month in its history.

The feat was achieved through the company’s vast network of over 5,400 service touchpoints.

Hisashi Takeuchi, Managing Director & CEO, Maruti Suzuki India, said, “This is the first time in the company’s history that we have serviced over 24.5 lakh vehicles in a month, an achievement that reflects scale, depth, and efficiency of the service network. It is a result of the tireless efforts of our service teams and dealer partners across the country.”

“Good quality aftersales service is critical to maintain vehicle health, leading to a delightful car ownership experience and strengthen customer retention. Even before we started mass sales of vehicles in India, our focus was on building a robust service network, a foundation that continues to support us as we expand our business further. Going forward, we aim to expand our service touchpoints to 8,000 by FY 2030-31 and introduce innovative formats to cater to the requirements of diverse customer needs. This will help in our EV launch as well. We are preparing 1,500 EV enabled service workshops covering over 1,000 cities with specially trained manpower and special equipment to extend all EV related support to our customers,” he said.

Maruti Suzuki India has through its dealer partners introduced several innovative and industry-first service formats, to address the smallest query to full-car service needs ranging from traditional brick-and-mortar workshops to mobile workshops. Over the years, it has also created a dedicated Quick Response Team (QRT) to provide emergency on-road assistance across the country.

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Mercedes-Benz India, the German luxury car brand, has announced a significant organisational change, effective from 1 August 2025, with the appointment of Brendon Sissing as the new Vice-President of Sales and Marketing. He will take over from Lance Bennett, who has moved to Mercedes-Benz Middle East as their Chief Financial Officer.

Santosh Iyer, Managing Director & CEO, Mercedes-Benz India, said, "We are excited to welcome Brendon Sissing as the Head of Sales & Marketing for Mercedes-Benz India. Brendon takes over the responsibility from Lance Bennett, who has joined Mercedes-Benz Middle East as the CFO. Brendon brings rich experience from the world of financing and insurance, as he successfully steered Mercedes-Benz Financial Service India, doubling its portfolio, driving record profit and business transformation, while elevating the integrated customer journey. We are confident Brendon will continue the growth momentum of Mercedes-Benz in this highly diverse and dynamic Indian luxury car market. We thank Lance for his immense contribution and wish them both, the very best in their respective new roles."

Brendon Sissing previously served as the Head of Mercedes-Benz Financial Services India, where he was instrumental in doubling the company's portfolio and achieving record profits. He is recognised for his strong advocacy of digital transformation and risk management, leveraging his expertise in credit risk to drive operational excellence. He has extensive experience within the Mercedes-Benz group, having worked with Mercedes-Benz Malaysia and Mercedes-Benz South Africa, leading Credit Operations in both markets. He also held roles in Credit Underwriting and Key Accounts at Daimler Mobility, Stuttgart, before joining Mercedes-Benz Financial Services India in 2022.

The German brand stated that under Sissing's leadership, Mercedes-Benz Financial Services India significantly enhanced customer journeys through integrated online and offline platforms. He is also noted for his passion for coaching and mentoring, fostering high-performing team environments. Sissing holds a B. Tech degree in Cost & Management Accounting from Technikon Pretoria, South Africa and a Diploma in Credit Management from the Institute of Credit Management. He is also a founding member of Mercedes-Benz Services Malaysia, established in 2012.

A South African national, Sissing has worked in various international locations, including Malaysia, South Africa, Germany and India.

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Honda Cars India has launched a new variant of its popular mid-size sedan, the Honda City Sport, adding a dynamic and youthful edge to the City line-up. Priced at INR 1.48 million (ex-showroom, Delhi), the City Sport is positioned as a limited-edition offering designed to appeal to style-conscious, spirited drivers.

The new variant will be exclusively available with a CVT automatic transmission and is offered in three colour options — Radiant Red Metallic, Platinum White Pearl, and Meteoroid Gray Metallic.

Sporting a blacked-out exterior theme, the car features a Sporty Black Grille, Glossy Black Shark Fin Antenna, Trunk Lip Spoiler and multi-spoke grey alloy wheels. Inside, the cabin gets an all-black treatment with red stitching, leather seats and ambient lighting for a premium, performance-inspired feel.

Under the hood, it retains the 1.5L i-VTEC petrol engine, delivering 121 PS and 145 Nm of torque, with a claimed fuel efficiency of 18.4 kmpl. The model also comes equipped with Honda Sensing, the brand’s advanced driver assistance suite.

Kunal Behl, Vice-President, Marketing & Sales, Honda Cars India, said, “The new City Sport has been crafted to meet the aspirations of young buyers who value individuality and a spirited driving experience. It embodies a perfect blend of sporty exterior and interior style, fun to drive performance and the everyday usability that Honda City is known for, at a price that makes it even more compelling.”

The City Sport is being positioned as a limited-unit, exclusive edition for customers seeking distinction in both design and driving dynamics.

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