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May 21, 2021 08:56 AM

Why safety technology could spell the end of manual transmissions

Stick-shifts — already losing a popularity contest — are also being forced into retirement by new safety systems

Steve Mertl
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    MAZDA

    All Mazda stick-shift vehicles have the Smart City Brake Support system. “We don’t want to penalize the drivers who want to choose a manual transmission,” said Chuck Reimer of Mazda Canada

    The manual transmission, in decline among North American car buyers for decades, faces fresh technological threats to its existence.

    Advanced driver-assist systems such as intelligent cruise control and automatic emergency braking (AEB) could further erode the manual’s market share — which sits at only 1.2 per cent in North America, according to global auto supplier ZF Group.

    These smart safety features can function with manuals but work best with automatics.

    Smart safety uses cameras, radar, lidar — using lasers — and other sensors to maintain safe traffic gaps under cruise control. They also alert drivers to an imminent collision, braking automatically if necessary.

    The technology poses a dilemma for automakers: Spend money to adapt it to work with manual transmissions or recognize declining consumer demand? The response depends on the company and the market.

    Also, dozens of countries have agreed to make AEB mandatory, just like antilock braking and skid control systems.

    MANDATE? MAYBE

    Transport Canada regulators have begun a process that could result in such a mandate, a department spokesman said. In 2019, the U.S. National Highway Traffic Safety Administration reached an agreement with 20 manufacturers to voluntarily equip most new vehicles with AEB by 2022, which likely makes any Canadian regulation moot.

    AEB will be required on new cars and light trucks sold in Europe next year. Most automakers have added the feature in advance of the regulation’s taking effect, Manfred Meyer, ZF’s senior vice-president, active safety engineering, said from the company’s headquarters in Germany.

    “That is a function that is ready to go,” Meyer said. That includes manual transmissions, which still dominate in the subcompact and compact passenger vehicles popular in Europe.

    A decade ago, manuals represented up to one quarter of Subaru Canada’s annual sales volume, said Anton Pawczuk, a spokesman for product management. By 2019, it was less than 10 per cent.

    Subaru’s EyeSight smart safety system is not available on any manual-equipped model. One reason is those models, unlike those with automatic transmissions, lack an electronic brake, which is used to keep the car from creeping in an emergency stop.

    The decision not to adapt EyeSight to manual models was economic, Pawczuk said.

    “If it’s only 10 per cent of your sales and dropping, then your choices are either to improve EyeSight as a technology and make it better for the vast majority of vehicles that have it, or try to create something for the manual,” he said.

    SOME STICK BY MANUAL

    Mazda, by contrast, equips stickshift cars with its Smart City Brake Support system.

    “We don’t want to penalize the drivers who want to choose a manual transmission,” said Chuck Reimer, manager of product communications at Mazda Canada.

    Stalling the vehicle if the driver forgets to depress the clutch pedal is an acceptable trade-off, he said.

    Likewise, Mazda’s radar cruise control operates with a manual gearbox, Reimer said. The driver still has to change gears if the speed goes below or above the engine’s comfortable rev range, but the system will remain engaged.

    Toyota Canada Vice-President Stephen Beatty said the company has a two-pronged approach. All models developed in-house have Toyota’s Safety Sense system as standard equipment, but it is modified to work with manual-equipped vehicles.

    “We’ve tried to democratize safety systems throughout our lineup,” Beatty said.

    For jointly developed products, it depends on the partner’s approach. For example, a manual Toyota Yaris subcompact, which shares a platform with the Mazda2, gets AEB. But on the Toyota 86, built alongside the Subaru BRZ, it’s unavailable.

    Subaru remains committed to offering manual-equipped vehicles, Pawczuk said, but regulation would force it to decide whether to invest in adapting its AEB for use with manuals.

    “If it becomes mandated one day, then we’ll have to take a look at it,” he said.

    Growth in hybrid-vehicle sales is also a factor, said Jörg Trampler, director of electrified powertrain technology at ZF’s North American engineering centre in Livonia, Mich. Adding manual shifting to a hybrid drivetrain requires additional technology, such as an electronic clutch, to ensure seamless switching between internal combustion and electric power. “All of a sudden,” Trampler said, “things become really expensive.”

    WORLDWIDE COMPARISON

    The five-peed manual gearbox remains the most popular choice worldwide, according to the global research firm IHS Markit. But automatic transmissions dominate in Canada and the United States and are gaining popularity in Asia and Europe.

    Product evolution has closed the fuel-economy and cost gap between automatic and manual transmissions, removing prime reasons for choosing three pedals over two. Drivers who prize sportiness and control over convenience make up most of the manual market now.

    Statistics from IHS Markit and ZF Group, a global Tier 1 auto- motive supplier, show the global market for manual transmissions is down to 17.1 per cent and is 1.2 per cent for North America. IHS found that sales of electric vehicles eclipsed those of stick-shift vehicles in the United States last year.

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