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 reported its best-ever annual performance in FY2026 with wholesales of 641,587 units, up 15 percent YoY. This includes 631,387 units in the domestic market, up 14 percent, while exports came at 10,200 units, up 281 percent YoY.

For March 2026, the company’s sales came at 66,192 units, up 28 percent, while exports came at 779 units, up 204 percent YoY.

Interestingly, electric vehicles recorded its highest-ever quarterly sales of approximately 27,000 units, a 69 percent increase YoY. Annual EV volumes reached 92,120 units. On the other hand, sales of CNG vehicles crossed 170,000 units, up 24 percent YoY.

The Nexon and Punch models were the top-selling SUV models in the second half of the financial year. Recent launches, including the Sierra, a refreshed Punch and petrol variants of the Harrier and Safari, also saw continued customer traction.

The company expects the passenger vehicle industry to reach record annual volumes of approximately 4.7 million units, reflecting an 8 percent growth. Tata Motors emerged as the second-ranked player in the industry based on Vahan registrations during the second half of FY2026.

Shailesh Chandra, MD and CEO, Tata Motors Passenger Vehicles, said, “PV industry sales are expected to reach record volumes of around 4.7 million units for the year, reflecting 8 percent year on year (YoY) growth. The industry witnessed a strong rebound in the second half, posting double digit growth, supported by GST 2.0 implementation and a robust festive season. For Tata Motors Passenger Vehicles, FY26 has been a landmark year marked by multiple milestones. We achieved our highest ever annual sales volumes of over 640,000 units, delivering industry beating growth of 15 percent YoY and ended it with strong positive momentum. Looking ahead, industry momentum is expected to sustain, led by growth in SUVs, CNG and EV. At the same time, the industry will need to closely monitor geopolitical developments to mitigate potential supply-side risks.”

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Honda Cars India (HCIL), a leading manufacturer of passenger vehicles, has recorded domestic sales of 7,585 units in March 2026, up 5 percent YoY, as compared to the 7,228 units sold last year. The company also reported exports of 2,451 units for the month.

The sales growth was supported by demand for the Amaze and Elevate models. Honda Cars India intends to expand its vehicle lineup in the upcoming financial year, with the launch of its first battery electric vehicle (BEV) scheduled for the second half of the year.

Kunal Behl, Vice-President, Marketing & Sales, Honda Cars India, said, “Demand for all Honda models specially Amaze and Elevate continues to be strong with exciting promotions and product offerings which helped us achieve 5 percent growth during Mar 2026. We are excited to enter the new fiscal with plans to expand our lineup, including the launch of our first BEV in the second half. We remain highly optimistic that our strong focus on customer satisfaction will continue to drive growth and sustain positive momentum.”

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Nissan Motor India (NMIPL), one of the leading passenger vehicle manufacturers, has recorded its best-ever monthly sale in March 2026, its highest in the last five years.

The company sold a total of 10,388 units in March 2026, which includes 4,408 units in the domestic market, while exports came at 5,980 units. This marks a 98 percent growth in domestic wholesales compared to February 2026.

The company attributed the smart uptick on the back of beginning of customer deliveries for the Nissan Gravite MPV, while the Nissan Magnite maintained its sales momentum. The expansion of its network presence also supported increasing customer traction.

The start of Gravite deliveries is identified as a milestone in the company’s growth phase in India. Nissan intends to sustain this trajectory by strengthening sales and service experiences and further expanding its network footprint across the country.

Saurabh Vatsa, Managing Director, Nissan Motor India, said, “March has been a defining month for Nissan in India, the strong growth in domestic sales reflects the positive customer response to our product portfolio. With the commencement of customer deliveries of the all-new Nissan GRAVITE, we would like to thank our customers for their love and appreciation for the Nissan Brand. The over-whelming response to the product reinforces our confidence in the opportunities ahead. Together with the continued momentum of the Nissan Magnite, the dedication of our Network Partners and support of Nissan Finance & other Banking partners, we remain focused on strengthening our Sales & Service experience, while further expanding our network footprint for sustaining long-term growth in the Indian market.”

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  - Bidyut Ghosh April 02, 2026 11:35 AM

  This is excellent move from Nissan India

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Toyota Kirloskar Motor (TKM) reports 20 percent uptick in its wholesales for FY2026 with 406,081 units sold, as compared to 337,148 units last year.

The company recorded growth across both domestic and export markets during the financial year. Domestic sales rose by 19 percent to 367,107 units, while exports grew by 41 percent to 38,974 units.

In March 2026, Toyota Kirloskar Motor reported a 24 percent increase in total sales, with 37,194 units sold compared to 30,043 units a year ago.

The company attributes a robust demand for its product portfolio, which was supported by the introduction of the Land Cruiser 300, as well as new grades and special editions for the Innova Hycross, Fortuner, Camry Hybrid and Hilux. Technical updates included a new six-speed automatic transmission for the Urban Cruiser Hyryder AWD variant.

The company also standardised six airbags across the Rumion, Glanza, Urban Cruiser Taisor, and Urban Cruiser Hyryder models. The Innova Hycross achieved a five-star Bharat NCAP rating during this period.

Toyota Kirloskar Motor expanded its market reach through customer-centric initiatives and brand engagement activities, including the Toyota Experiential Museum (TEM) and a tour by brand ambassadors Drum Tao. These efforts were intended to increase reach among younger audiences and reinforce the brand's mobility positioning.

Sabari Manohar, Executive Vice-President, Sales-Service-Used Car Business, Toyota Kirloskar Motor, said, “We delivered a positive performance this financial year, driven by sustained demand across our SUV, MPV and compact segments. The introduction of new products and customer centric initiatives during the year further helped position Toyota as a dynamic, technology driven and youth‑oriented brand. This momentum reflects the continued trust in Toyota’s quality, reliability and overall ownership experience. In a rapidly evolving market, such consistency underscores the strength of our fundamentals and positions us well for long‑term sustainable growth. We sincerely thank our customers, dealer partner, Government and other stakeholders for their trust & unwavering support. We remain focused on strengthening our product and technology offerings in line with our multi‑pathway approach of hybrid & electrified vehicle technologies in the mobility space. Looking ahead, we remain committed to creating long‑term value while continuously improving every touchpoint across the customer ownership journey.”

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