Driven! The 2027 iX3 Is the Neuest BMW of Them All
The iX3’s software definition pays off every time you take the wheel, not just when new Easter eggs and features arrive via over-the-air updates.“All new!” That hackneyed expression seldom means what you think in the car world. But in the case of the 2027 BMW iX3, it’s more apt than usual. We’ve extensively covered the iX3’s four-brain centralized computing architecture, noting that this arrangement has computers that receive sensor input directly, then send commands straight to the appropriate actuators. It’s a setup that eliminates the game of telephone most vehicles employ, relaying messages from one supplier’s chip to another’s communications relay, to another’s main controller and back.
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BMW built the iX3’s entire system in-house—right down to its antilock-braking actuator. This shrinks response rates from between 10 and 50 milliseconds to 1 millisecond. We travelled to Spain to judge for ourselves how these quickened reflexes pay off in driver satisfaction.
Neue Klasse Recap
Remember that Neue Klasse refers to BMW’s all-new (there’s that term again) electrical/electronic centralized computing architecture. This will be deployed across dozens of next-generation BMWs riding on various physical architectures and employing different powertrains. The iX3 SUV and its coming i3 sedan stablemate ride on BMW’s new KKL (compact class) BEV architecture, with its also new cell-to-pack and pack-to-body construction pioneered by Tesla, in which the carpet and seats are mounted to the vehicle’s rigid battery pack, which bolts directly into a hole in the unibody, improving mass and space efficiency.
Road to Ronda
Our time behind the wheel of the 2027 iX3 began with a spirited drive up the hilly, twisty roads connecting the Andalusian coast with the historic Celtic/Roman/Visigothic/Moorish gorge-straddling town of Ronda. Here, the vehicle’s brain dedicated to driving dynamics, dubbed Heart of Joy, converted our acceleration, deceleration, and cornering wishes into action. It does this by assessing, on a millisecond-by-millisecond basis, precisely how much grip there is at each tire’s contact patch. The Heart of Joy’s bandwidth of capability will be greater with electric powertrains than with the hybrid or combustion variants to which the Neue Klasse electric architecture will eventually be applied. That’s because each motor is essentially a “driving-dynamics actuator” that can accelerate or regeneratively brake instantaneously; there’s no waiting around for gases to enter, compress, and explode.
Is the front axle devoting a big percentage of its grip to cornering? Then those tires won’t accept as much accelerative force, so torque gets biased rearward until the wheel unwinds. These are levers that combustion engines with mechanical drivetrains don’t have access to and that can’t effectively be employed in non-Neue Klasse EVs with a 50-millisecond response rate.
The result: astonishing grip and agility that belies the vehicle’s roughly 5,050-plus pound weight (5,400 or so with two Americans onboard), even when fitted with midlevel 255/40R21 Goodyear Eagle F1 Asymmetric 6 tires like our test vehicle. The iX3’s ability to find and utilize available grip even when there’s spotty dampness in corners is amazing. And of course, each braking stop is electrically managed to be limo-smooth—no bobbing heads.






