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Base Year: 2024
Companies covered: 20
Tables & Figures: 230
Countries covered: 22
Pages: 190
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Automotive Integrated Starter-Generator Units Market
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Automotive Integrated Starter-Generator Units Market Size
The global automotive integrated starter-generator units market size was valued at USD 5.2 billion in 2024 and is estimated to register a CAGR of 8.9% between 2025 and 2034.
The market is increasing due to high demand for efficient and eco-friendly vehicles. Sales figures for integrated starter-generators have increased due to customers’ demand for cars that sip gasoline and lighten their impact on the planet and ISG gear makes those requests easy to answer. Regulatory agencies-from Brussels to Beijing-are setting up ever-stricter tailpipe caps, so the pressure to act is undeniable. Manufacturers are pushing mild hybrids onto dealer lots at a record pace. A mild-hybrid layout carries a fraction of the cost of a plug-in or full hybrid, so shoppers pocket the fuel gains without swallowing a sky-high sticker.
For instance, in June 2024, models like the Hyundai Tucson and Suzuki Ciaz feature ISG systems that improve fuel efficiency by up to 10-15%, encouraging adoption across developing and developed automotive markets.
The sales of premium and performance cars have taken off, and that uptick is directly fueling the mild-hybrid ISG market. Upscale badges like Audi, BMW, and Mercedes-Benz now bolt an integrated-starter-generator into nearly every new model, turning what was once a luxury gimmick into standard kit.
Smoother stop-start transitions, instant power at the throttle, and the virtuous bonus of better fuel numbers line up with what high-spending customer demand. For instance, in March 2024, the Audi A6 or the new Mercedes-Benz E-Class both rely on a 48-volt ISG to kill turbo lag and shove the sedan ahead with barely a pause. That kind of tech is no longer confined to Berlin or Ingolstadt, drivers in emerging markets are asking for every last watt as they trade up to gadget-laden saloons.
More and more people are packing into city streets, and that crush of stop-and-go traffic is pushing drivers to ask for anything that nips fuel bills in the bud. Integrated starter-generator setups flip the engine off at every red light and coax it back to life the instant the driver jabs the accelerator. By blanking out those long idling minutes the system shrinks both emissions and fuel receipts on snarled avenues.
Metro superpowers such as New Delhi, Jakarta and São Paulo see the payoff clearly. In a world where pure-electric rollout still hits logistical walls, carmakers now treat this small-batch gadget as a must-have urban companion simply to keep the stop-start city pace bearable. Sales follow that logic almost overnight.
Automotive Integrated Starter-Generator Units Market Trends
Automotive Integrated Starter-Generator Units Market Analysis
Based on product, the automotive integrated starter-generator units market is segmented into belt-driven ISG, crankshaft-mounted ISG, dual-clutch transmission ISG. In 2024, the belt-driven ISG segment held a market revenue of over USD 3 billion.
Based on vehicle, the automotive integrated starter-generator units market is divided into passenger cars and commercial vehicles. The passenger cars segment held a major market share of 74% in 2024 and is expected to grow significantly over the forecast period.
Based on power rating, the automotive integrated starter-generator units market is divided into below 5 kW, 5-10 kW, above 10 kW. The below 5 kW segment held a major market share of around 48% in 2024 and is expected to grow significantly over the forecast period.
Based on propulsion type, the automotive integrated starter-generator units market is divided into mild hybrid-electric vehicles and internal combustion engine vehicles. The mild hybrid-electric vehicles segment held a major market share in 2024 and is expected to grow significantly over the forecast period.
Europe dominated global automotive integrated starter-generator units market with a share of 38.6% in 2024 and Germany leads the market in the region generating 496.7 million revenue in 2024.
The automotive integrated starter-generator unit market in the U.S. is expected to experience significant and promising growth from 2025 to 2034.
The automotive integrated starter-generator units market in China is expected to experience significant and promising growth from 2025 to 2034.
The automotive integrated starter-generator units market in the Brazil is expected to experience significant and promising growth from 2025 to 2034.
Automotive Integrated Starter-Generator Units Market Share
Automotive Integrated Starter-Generator Units Market Companies
Major players operating in the automotive integrated starter-generator units industry include:
The strict emissions regulations and the rising adoption of 48V mild hybrids is driving the automotive integrated starter-generator units market. Europe and Asia-Pacific dominate demand with Bosch, Valeo and Denso leading due to strong OEM partnerships. MHEVs fuel expansion, PHEVs and BEVs limit long-term ISG. The market remains moderately consolidated as top suppliers are controlling share. Emerging players in China and India are gaining attention in market.
The ISG market is a made of tech innovation, with Bosch and Valeo leading in 48V systems, while Denso and Mitsubishi dominate Asian market. Chinese suppliers could create a difference with its cost-efficient ISGs. Suppliers must change to dual strategies like serving legacy ICE hybrids while transitioning to full electrification in market
North America trails but gains from pickup/SUV hybridization. Latin America and MEA are niche markets. The future depends on automaker electrification of roadmaps. OEMs such as VW and Toyota will set ISG demand. Suppliers need to balance short-term MHEV opportunities with long-term transition to EVs. Companies investing in scalable, high-efficiency ISGs will prosper in future.
Automotive Integrated Starter-Generator Units Industry News
The automotive integrated starter-generator unit market research report includes in-depth coverage of the industry with estimates & forecasts in terms of revenue (USD Million) and volume (units) from 2021 to 2034, for the following segments:
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Market, By Product
Market, By Vehicle
Market, By Power rating
Market, By Propulsion
Market, By Sales channel
The above information is provided for the following regions and countries: