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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Nissan is placing its design heritage and a focus on premium ruggedness at the core of its strategy for the Indian market, with the upcoming Tekton C-SUV positioned to spearhead its product expansion. The new model, which takes its name from the Greek word for 'craftsman' or 'architect,' is intended to be a ‘segment disruptor’ and is heavily inspired by the brand’s flagship, the Nissan Patrol.

The Tekton will be the first of Nissan's new product offensive, with the production model expected on Indian roads by the second quarter of calendar year 2026, as confirmed by Saurabh Vatsa, Managing Director of Nissan Motor India.

Alfonso Albaisa, Senior Vice-President of Global Design at Nissan Motor Corporation, highlighted the influence of the iconic Patrol, saying the goal was to create a ‘compact or baby Patrol’. The new C-SUV incorporates several design cues from its larger sibling, including the V-strut grille and the distinctive C-shaped signature headlamp design seen in the last two generations of the Patrol.

The design team, which worked on both the new Patrol and the successful Magnite compact SUV, aimed to make the Tekton's ‘character larger than its actual footprint.’

Ken Lee, Senior Design Director at Nissan Motor Corporation, explained that the car’s rugged aesthetic is essential for the Indian market. "Learning from Magnite SUV, which was a very big hit, the sense of protection, high centre of gravity, driving positions, are very in-tune with the region," he noted.

This focus translates into a design that delivers ‘a sense of premiumness inside the ruggedness and is one notch above the segment.’

Specific design elements include:

• Double C-shaped accents on the side, incorporating an abstract design inspired by the Himalayas.
• A focus on consistency across the front, side, and rear views, reinforced by the C-shaped lighting signatures.
• An interior designed to offer ‘a sense of tranquillity’ through improved touch surfaces and premiumness.

Technology Meets Tactile Control

Addressing the shift in consumer preferences, Lee noted that while chrome used to signify premium, ‘now technology is premium.’ However, the company is careful not to over-rely on digital controls.

Designers globally are currently debating the mix of digital and physical controls. "We are living in a moment which is software and physical demand," Lee stated, acknowledging that after a decade of fascination with purely digital interfaces, customer feedback is now strongly pushing back in favour of tactile controls for essential functions.

The Tekton, developed through collaborative efforts between Nissan’s global design centre in Japan, the London studio (which worked on the Magnite), and engineers in Chennai, sits ‘right in the centre of the C-SUV segment,’ aiming for a more premium positioning than the outgoing Terrano.

Vatsa confirmed that the production-ready design is already undergoing testing, with pre-production vehicles being showcased to the dealer network ahead of the official 2026 launch.

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India's automobile retail sector has entered a ‘golden festive phase,’ according to data released by the Federation of Automobile Dealers Associations (FADA), which detailed vehicle registrations for September and the Navratri festival period in 2025.

The data reveals overall September retail sales came at 1.82 million vehicles, up 5.22 percent YoY, but the highlight was the unprecedented 34 percent surge in vehicle retail sales during the Navratri festival, which FADA dubbed a ‘Bachat Utsav’ (Savings Festival). Interestingly, compared to August 2025, the retail sales dropped by 6.98 percent.

On the other hand, the Navratri period delivered a historic high for the sector, with overall retail sales soaring by 34 percent YoY. Every major segment registered strong double-digit growth, except for Construction Equipment (CE), which declined due to heavy rains slowing activities.

• Two-wheelers led the charge with a 36 percent increase, driven by improved affordability and festive offers.
• Passenger vehicles saw a robust 34.8 percent rise, as new buyers and upgraders took advantage of lower prices.
• Commercial Vehicles (CV) grew by 14.8 percent, reflecting optimism in infrastructure and easier financing.

The remarkable festive growth is being attributed to the 'GST 2.0' tax reforms, which lowered Goods and Services Tax rates on vehicles, effectively boosting affordability for consumers.

September 2025 proved to be an unusual month, with sales remaining muted for the first three weeks. However, demand dramatically revived after 22nd September, coinciding with the implementation of the new GST rates and the start of Navratri.

Sai Giridhar, Vice-President, FADA, said, "September 2025 was an exceptionally unique month for India’s automobile retail industry. The first three weeks were largely muted, with customers holding back in anticipation of the GST 2.0 reforms. However, the dynamics changed dramatically in the final week as Navratri festivities coincided with the implementation of lower GST rates, reviving customer sentiment and accelerating deliveries across most vehicle categories."

Passenger Vehicle (PV) dealers also used the final surge to replenish stock, pushing inventory levels up to approximately 60 days in preparation for the upcoming peak sales season of Dhanteras and Deepawali.

Giridhar hailed the performance, said, "Navratri 2025 will go down as one of the most memorable chapters in India’s automobile retail journey — a true ‘Bachat Utsav’ unleashed by the visionary GST 2.0 reform. For the first time ever, dealerships across the nation witnessed record-breaking footfalls and deliveries."

Robust Outlook

FADA is highly optimistic about the near-term outlook, predicting that India is on track for its best-ever festive season. The combination of favourable factors – including an above-normal monsoon, a strong harvest, stable policy rates and the transformational impact of GST 2.0 – is set to boost consumer purchasing power across rural and urban markets.

The momentum is expected to carry through October, with Dhanteras and Deepawali forecast to deliver all-time high sales figures, ushering the Indian auto retail sector into a new phase of growth.

Lead image: For representational purposes only.

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Mercedes-Benz India has reported its most successful September on record, achieving a significant 36 percent year-on-year growth in sales. This exceptional performance is largely credited to the government's recent GST 2.0 reforms, which stimulated market demand and converted customer interest that had been deferred since mid-August into purchases. This positive momentum was particularly evident during the Navratri festival, where the company retailed 2,500-plus units, marking its highest-ever sales for the festive period.

This record-breaking September also propelled the company to its best-ever second-quarter sales performance for the fiscal year 2025-26, with a total of 5,119 units sold. This quarterly success was anchored by consistent demand across two key vehicle categories. The 'Top-End Luxury' segment, including models such as the GLS, S-Class and Mercedes-Maybach, achieved a 25 percent share of total sales and grew by 12 percent year-on-year. A notable trend within this segment is hyper-personalisation, with the bespoke 'manufaktur' programme contributing to 75 percent of all top-end vehicle sales. Simultaneously, the 'Core Luxury' segment, which includes the Long-Wheelbase E-Class, GLC and GLE, maintained a dominant 60 percent penetration of overall sales and grew by 10 percent. The E-Class sedan, in particular, solidified its position as the highest-selling luxury car in India.

The company’s electric vehicle (BEV) portfolio also saw robust growth, maintaining an eight percent penetration rate and growing by 10 percent, driven by strong demand for models like the EQS SUV. However, the 'Entry Luxury' segment experienced a decline, facing stiff competition from more affordably priced alternatives in the market. Overall, the results underscore a strong market preference for Mercedes-Benz's high-end and electric vehicles, setting a new benchmark for the brand's performance in India.

Santosh Iyer, Managing Director & CEO, Mercedes-Benz India, said, “Mercedes-Benz clocked its best-ever September sales owing to an overwhelming customer response following the GST 2.0 reforms, culminating the pent-up demand. Our attractive new portfolio combined with innovative financial programmes under the ‘Dream Days’ campaign, resulted in overwhelming demand for Mercedes-Benz cars in the luxury market. We expect this festive buying spirit to continue in October as well, with upcoming festivities including Dhanteras and Diwali, which traditionally witness spirited buying from customers. While there was strong demand across the portfolio, we recorded the highest ever monthly sales for key products like the Long Wheelbase E- Class, GLC, GLE, GLS and G63 AMG SUVs. The reduction in the GST rates has certainly improved customer sentiment with its appropriate timing as car prices are increasing owing to macro-economic challenges like adverse forex movement, rising operational cost etc. We hope this buoyant spirit sustains for the remaining festive season as we continue to observe market trends closely, remaining cautiously optimistic.”

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Mumbai-based automotive major Mahindra & Mahindra has introduced the new Bolero range with prices starting INR 799,000 (ex-showroom), with the new top-end B8 variant priced at INR 969,000 (ex-showroom). The new Bolero Neo starts at INR 849,000 (ex-showroom), with the new top-end N11 variant at INR 999,000 (ex-showroom).

With a history of 25 years and over 1.6 million customers, the Bolero remains a versatile SUV, navigating diverse terrains from city streets to rural landscapes, offering adaptability and value.

The new Bolero features a new grille, fog lamps and diamond-cut alloy wheels. Inside, the Bolero offers a new 17.8 cm touchscreen infotainment & music system, steering-mounted controls and leatherette upholstery with better seat comfort. The RideFlo ride and handling tech gives better stability and control, with improved suspension. The Bolero is powered by the mHAWK75 engine delivering power of 55.9 kW and 210 Nm torque, with body-on-frame construction. The company has also introduced a new Stealth Black colour, along with existing colours.

On the other hand, the new Bolero Neo combines toughness with urban style. It features a sleek new grille with horizontal accents and dark metallic grey R16 alloy wheels. Interior theme options are Lunar Grey and Mocha Brown. Comfort features include leatherette upholstery and better seat ergonomics. It has a 22.8 cm infotainment system, a rear-view camera and a USB C-type charging port. The RideFlo tech, along with MTV-CL and Frequency Dependent Damping (FDD), ensure smooth rides. It is powered by the mHAWK100 engine delivering power of 73.5 kW and 260 Nm torque and includes cruise control and Multi-Terrain Technology (MTT) for better traction. New colours include Jeans Blue and Concrete Grey, plus three dual-tone options.

Nalinikanth Gollagunta, Chief Executive Officer – Automotive Division, Mahindra & Mahindra, said, “The Bolero has stood the test of time, earning its place as one of India’s most versatile and tough SUVs for over 25 years. Building on this enduring legacy, the new Bolero range has been thoughtfully designed to meet the aspirations of a dynamic and rapidly evolving New India. With a perfect blend of toughness, contemporary styling, enhanced comfort, and modern features, the new Bolero and Bolero Neo deliver a powerful SUV experience that shines equally in urban environments and challenging terrains.”

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