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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Tata Motors Passenger Vehicles has announced it will present the Indian Women’s Cricket Team with the first lot of the soon-to-be-launched Tata Sierra SUV following their victory at the ICC Women's World Cup. The Tata Sierra is slated to be launched on 25^th November.

The company will gift the top-end model of the Sierra to each team member as part of its salute to the team’s journey and contribution to the country.

Shailesh Chandra, MD and CEO, Tata Motors Passenger Vehicles, said, “The Indian Women’s Cricket Team has made the entire nation proud with their extraordinary performance and remarkable win. Their journey stands as a true testament to determination and the power of belief, qualities that inspire every Indian. At Tata Motors Passenger Vehicles, we are privileged to present these legends with another legend, The Tata Sierra. This is our salute to their spirit and the pride they have brought to the nation – Two legends, One spirit, Infinite inspiration.”

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Maruti Suzuki India, the country’s leading passenger vehicle manufacturer, has attained a new milestone by crossing the 30-million-unit sales milestone in the domestic market.

The new benchmark was attained by the company over a course of 42 years, with the first 10 million unit sales taking 28 years and 2 months to achieve.

The 20 million unit sales took 7 years and 5 months, while the recent milestone took just 6 years and 4 months.

Interestingly, the entry-level hatchback Alto was the most preferred model in the country, with over 4.7 million units sold, followed by Wagon R with 3.4 million units and the sporty Swift with 3.2 million units.

The Brezza and Fronx SUVs also played an instrumental role in contributing to the sales milestone, being featured among the top 10 models sold in the country.

It was on 14^th December 1983, Maruti Suzuki India delivered its first model, the iconic Maruti 800, to its first customer.

Hisashi Takeuchi, Managing Director & CEO, Maruti Suzuki India, said, “When I look at the length and breadth of India and think that 3 crore customers have placed their trust in Maruti Suzuki to realise their dream of mobility, it fills me with humility and gratitude. Yet, with car penetration at approximately 33 vehicles per 1,000 people, we know our journey is far from over. We will continue to make every possible effort to bring the joy of mobility to as many people as we can, while also be an asset to both the economy and the environment at the same time.”

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American electric vehicle maker Tesla has appointed Sharad Agarwal, former Chief Business Officer of Classic Legends, as its new business head, according to a report by Bloomberg.

The report further stated that Agarwal joined the EV maker a week ago and is tasked to drive sales for Tesla in India, which as per industry observers, has not performed as per the company’s expectations.

Agarwal, an automotive industry veteran, had begun his career with TVS Motor Co as Area Sales Manager in December 2002, before joining Mahindra First Choice Wheels as its Business Head for North and Eastern region in March 2007.

It was in January 2013, he moved to Audi India as the head of Sales, before taking over as the head of Lamborghini India in April 2016, where he spent almost 9 years, before joining Classic Legends.

During his tenure at Lamborghini, the Italian super luxury car maker saw its dealerships across India achieved a Return on Sales (RoS) of more than 10 percent, setting a new benchmark for the automotive business in the country. He also grew India’s ranking for the automaker as the third market globally in terms of PR visibility in 2021.

He also expanded Lamborghini India’s reach to over 60 cities, with sales volumes from Tier 2 and Tier 3 cities contributing more than 25 percent of the total.

Tesla, which formally started deliveries in September 2025 with its first dealership in Mumbai and the second facility in Delhi, has till date delivered 114 vehicles, of the estimated 600-plus bookings.

File photo for representational purposes only.

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Mumbai-headquartered business conglomerate Mahindra & Mahindra has announced its financial results for Q2 FY2026 with consolidated Revenue reaching INR 461 billion, marking a 22 percent YoY growth.

The consolidated Profit After Tax (PAT) stood at INR 36 billion, a 16 percent increase YoY. The company stated that, excluding specific one-time impacts, PAT growth was 28 percent YoY.

Mahindra’s Auto business reported sales of 262,000 vehicles, up 13 percent, which includes around 146,000 SUV sales. This translated to a revenue of INR 271 billion, up 25 percent YoY, while net profit came at INR 15 billion, up 8 percent YoY.

On the other hand, the farm sector reported its highest ever Q2 market share at 43 percent with sales of 123,000 units, up 32 percent YoY. The revenue came at INR 102 billion, up 25 percent, while consolidated net profit came at INR 11 billion, up 45 percent YoY.

Dr. Anish Shah, Group CEO & Managing Director, Mahindra & Mahindra, said, “We are pleased with the strong execution and solid performance delivered across the group in Q2 FY2026. Auto and Farm sustained their leadership with consistent gains in market share and profitability. TechM is progressing well on its transformation journey. MMFSL achieved a 45 percent PAT growth and remains committed to quality growth and digital transformation. Our Growth Gems are steadily advancing towards their ambitious goals, reinforcing our long-term value creation potential.”

Rajesh Jejurikar, Executive Director & CEO (Auto and Farm Sector), Mahindra & Mahindra, said, “Strong performance of our Auto and Farm businesses continues in Q2 FY2026 reinforcing our leadership position, with a gain of 390 bps YoY in SUV revenue share, and 100 bps YoY in LCV (< 3.5T) market share. In Tractors, we gained 50 bps YoY to reach 43 percent market share. Our Auto Standalone PBIT margin (excl. e-SUV Contract Mfg.) improved by 80 bps to 10.3 percent and core Tractor PBIT margins improved by 190 bps to 20.6 percent.”

Amarjyoti Barua, Group Chief Financial Officer, Mahindra & Mahindra, “Our solid Q2 consolidated results reflects the strength of our diversified portfolio. We continue to deliver on our strategic priorities. We had strong cash generation in the first half, delivering over INR 100 billion of operating cash flow. We remain committed to sustainable growth and value creation.”

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