BMW X5 G65 with the B58 Engine: A Quick Take on the Tech and the Pitfalls
The new BMW X5 (G65) with the B58 inline-six isn’t just a facelift—it’s a paradigm shift in chassis control. The Heart of Joy system processes data 10 times faster than its predecessor, and the CLAR platform made room for hybrid, electric, and future hydrogen variants. Here’s what that means in practice, and what to look at before you buy.
The Problem: Technology That Takes Getting Used To
You climb into the new X5 G65 and discover that half the functions are buried in touchscreens, while the thick A-pillars hide pedestrians at intersections. The electric iX5 60 weighs 1,323 lb more than the gas version—and you feel it. At the same time, the steering responds to the smallest input, and the hybrid switches between modes imperceptibly. You need to understand how these systems work and what to prepare for.
Symptoms
- No dead zone at steering center—response is instant
- The switch between electric and gas in the hybrid is imperceptible
- Under hard braking in one-pedal mode, the nose can dip if soft stop isn’t active
- Thick A-pillars create blind spots at intersections
- Too few physical buttons—some functions live only on the screens
- On the iX5 60, the extra mass puts added load on the tires and suspension
The Causes: How the G65 Innovations Work
Heart of Joy is the central chassis brain, and it processes data on road conditions 10 times faster. The system combines control of the brakes, steering, and regen, which is why the car’s reactions are lightning-quick.
Engineers went with a separate mounting for the springs and shock absorbers—that buys a working load range of up to 1,323 lb. The car is equally stable with just the driver aboard and fully loaded. Revised front-axle kinematics eliminated the steering dead zone: response starts right at center. Special low-rolling-resistance tires cut fuel consumption.
The Solution: What BMW Offers
The X5 50e hybrid makes 490 hp of combined output. Its 25.7 kWh battery delivers about 63 miles of electric range. Transitions between modes are imperceptible, and a pull on the steering-wheel paddle fires the engine up instantly for hard acceleration.
The iX5 60 electric delivers 578 hp with a 144 kWh battery (US market). 800-volt architecture enables fast charging. Despite the extra 1,323 lb, the car drives lighter than the gas version—thanks to the low center of gravity and the work of Heart of Joy. Adaptive regen is integrated with the navigation and cameras: the system sees corners and intersections coming and adjusts braking ahead of time.
Comfort: the soft stop function brings the car to a smooth halt with no nose dip. The panoramic head-up display adapts to the driver—only the data you need appears on the windshield. The upgraded parking system displays its options instantly.
Prevention and a Pre-Purchase Checklist
For efficient running:
— Use Efficient mode—it cuts energy use, air conditioning included
— Activate Moment Electric—it extends electric range around town
— Use the steering-wheel paddle to fire the engine up instantly when passing
Used G65 purchase checklist:
— Test adaptive regen at different speeds—it should brake smoothly and work correctly with the navigation
— Check steering response from center—there should be no play or lag
— Make sure there are no jolts at a full stop in one-pedal mode—soft stop should work flawlessly
The Bottom Line
The BMW G65 is a technological leap—with caveats. Heart of Joy and the separately mounted springs and shock absorbers deliver outstanding handling, and the hybrid and EV impress with power. The thick A-pillars and the sea of touchscreens, however, take getting used to. The iX5 Hydrogen with its flat tanks arrives in 2028, and Heart of Joy will underpin every future BMW model. Before you buy, check the regen, the steering response, and the soft stop—those are the main indicators that the systems are healthy.