Forty-one percent of Chinese automakers are building their software-defined vehicle technology stacks in-house. In the U.S. and Europe, that number drops to 25%. The gap tells you almost everything you need to know about where the next decade of automotive profit is heading.
Yvette Zhang, AlixPartners’ Advanced-Mobility Segment Co-Leader, laid out the numbers this week at the Women Automotive Summit Detroit in Novi, Michigan. The consultancy’s latest report on global SDV platform development paints a picture that should make boardrooms in Detroit, Stuttgart, and Wolfsburg deeply uncomfortable.
“Western OEMs are giving away a big part of their future by outsourcing architectural control, while the Chinese competitors are building the capability in-house,” Zhang said. “When you hand this architecture to an external partner, even though a very good one, you actually hand over a big part of a meaningful share of your future P&L.”
The spending gap is stark. Thirty-five percent of China’s OEMs are putting more than half their R&D budgets into SDV development. Western automakers? Between 18% and 21%.
The problem runs deeper than dollars. Zhang described Western OEMs as assembling “patched stacks” — hardware and software sourced from multiple Tier 1 suppliers and tightly coupled together. Sixty to seventy percent of Western OEMs are doing some version of this build-or-buy patchwork.
The result is vehicles whose components resist the kind of seamless over-the-air updates that define the SDV promise. CAN controllers sourced from different suppliers don’t play nicely when you’re trying to push a unified software update across a fleet.
Chinese OEMs building in-house, meanwhile, own the full software stack. They control the update cycle. They control the data revenue.
And almost nobody is capturing the value yet. Zhang said 94% of all OEMs globally are monetizing less than half of their vehicles’ software features. “Ninety-four out of 100 cannot get the value out of it,” she said.
Software reuse — writing code once and deploying it across multiple models and platforms — is another chasm. Forty-eight percent of Chinese OEMs have achieved or are achieving platform-level software reuse. Western OEMs sit around 30%, while Tier 1 suppliers lag even further behind at 19%.
Every new Western vehicle program means reinventing the wheel, burning the same time and money again. That’s not a recipe for competing with rivals who write the code once and spread it across their entire lineup.
Zhang was careful to frame this as an organizational failure, not a technological one. Western automakers aren’t incapable of building competitive SDV architectures. They’re choosing not to prioritize it.
Budgets stay spread across legacy platforms. Leadership attention stays fragmented. Cross-functional alignment remains a conference-room aspiration rather than an operational reality.
“It’s sharper than a lot of people in the industry are willing to admit,” she said of the strategic divide.
The AlixPartners 2026 Disruption Index, released in January, ranked automotive as the most disrupted industry for the second consecutive year. Tariffs, geopolitical friction, sluggish EV sales, and Chinese competition were all cited. Fifty-nine percent of auto executives admit they’re being outpaced by technological change, and most of them point directly at Chinese entrants as the reason.
Two-thirds of auto executives say they see SDVs as an opportunity. Seeing it and seizing it are different verbs.
Western automakers are watching Chinese competitors sprint while they committee-approve their next move. The architecture decisions being made right now — build or outsource, integrate or patch — will determine who owns the vehicle’s revenue stream for the next 20 years. And right now, that ownership is migrating east at a pace the industry’s legacy players seem unwilling to match.
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