BMW IX5 Hydrogen: Full Review, 311-Mile Range

The BMW iX5 Hydrogen represents a bold step in sustainable automotive engineering, transforming the familiar X5 platform into a fuel-cell electric vehicle (FCEV) that prioritizes rapid refueling and seamless driving dynamics. This prototype delivers 396 horsepower from a rear-mounted electric motor powered by a hydrogen fuel cell, achieving a WLTP range of approximately 311 miles while emitting only water vapor.

Understanding the Hydrogen Powertrain

At the heart of the iX5 Hydrogen lies an advanced fuel-cell system that converts hydrogen into electricity through an electrochemical reaction. Two carbon-fiber-reinforced tanks store nearly 6kg of hydrogen at 700 bar pressure—one in the transmission tunnel and another under the rear seats—feeding a fuel cell stack under the hood rated at 168bhp, which powers a 401bhp rear electric motor. Unlike battery EVs, this setup avoids heavy lithium-ion packs, keeping curb weight around 2.4 tons, comparable to a plug-in hybrid X5 rather than a full BEV exceeding 2.6 tons.

The system, partially sourced from Toyota collaboration, includes a cooler, humidifier, and high-pressure compressor for optimal air quality and sustained peak power output. Electricity generated drives the motor via a single-speed automatic transmission, with regenerative braking adjustable via steering wheel paddles. Refueling takes just 3-5 minutes, matching petrol stops and far surpassing EV charging times.

Driving Dynamics and Performance

Behind the wheel, the iX5 Hydrogen mirrors a premium electric X5, blending instant torque, silence, and composure. Acceleration from 0-62mph occurs in under 6 seconds, with a top speed of 115mph (180km/h internationally), powered by 396bhp and rear-wheel drive. Reviewers note its punchy response and quiet operation, with only minimal wind noise at highway speeds.

Adaptive air suspension delivers a supple ride, smoothing bumps effectively on 20-inch or 22-inch wheels, though larger tires may firm it up slightly. Multiple drive modes—Eco, Comfort, Sport—tailor throttle mapping and regen levels, while direct steering and balanced handling provide engaging dynamics without off-road emphasis, despite 200mm-plus ground clearance. Fuel efficiency varies from 1.2kg/100km in Eco to 1.4kg/100km on highways.

Design and Visual Updates

Visually, the iX5 Hydrogen stays true to the pre-facelift X5, with subtle cues like blue-accented badges and hydrogen-specific wheels distinguishing it. The body integrates tanks seamlessly, maintaining the SUV’s bold stance and aerodynamic profile without drastic alterations. Inside, it retains X5 luxury: leather upholstery, 14.9-inch curved infotainment touchscreen, premium audio, heated seats, adaptive cruise, and dual-zone climate control.

Interior Comfort and Practicality

Cabin space mirrors the standard X5, offering generous room for passengers. Front seats provide supportive comfort, while rear legroom and headroom suit families. Boot capacity remains practical despite rear tank placement and underfloor high-voltage battery, though exact figures are unpublished. The hushed interior amplifies refinement, with electric propulsion enhancing the X5’s already quiet cabin insulation.

• Spacious five-seat layout with premium materials
• Intuitive iDrive system on dual screens
• Ample storage and connectivity options
• Minimal intrusion from hydrogen components

Hydrogen Infrastructure Challenges

While performance impresses, hydrogen refueling remains a hurdle. The UK has only about 15 stations, lagging behind Germany and Belgium, limiting pilot fleet deployment. BMW’s global pilot tests viability, but widespread adoption demands network expansion. Range matches similar-sized EVs, but quick fills offer convenience for long trips.

Environmental Impact and Future Prospects

Emitting solely water, the iX5 Hydrogen achieves true zero tailpipe emissions, positioning it as a clean alternative where battery production and charging grids pose issues. BMW views it as complementary to BEVs, targeting regions with hydrogen readiness. Production timelines remain unclear, but prototypes signal commitment to diverse electrification paths.

Comparison with Battery EVs and Plug-in Hybrids

Versus the X5 xDrive45e PHEV, the iX5 offers purer electric drive without range anxiety from depleting batteries. Against full BEVs like the iX, it trades potential range for lighter weight and faster refueling, ideal for high-mileage users.

Technology and Safety Features

Standard X5 tech suite includes forward collision warning, lane-keeping assist, and parking aids. The fuel cell’s robust design ensures quick throttle response, with system safeguards for hydrogen handling. Infotainment supports wireless Apple CarPlay/Android Auto, navigation optimized for hydrogen stations.

Pros and Cons

• Pros: Ultra-quick refueling, refined electric drive, competitive range, luxurious interior, low weight for class
• Cons: Limited refueling infrastructure, prototype status (no sales date), higher potential cost, subtle visual differentiation

FAQs

What powers the BMW iX5 Hydrogen?

A hydrogen fuel cell generates electricity for a rear electric motor, storing H2 in two high-pressure tanks.

How long does it take to refuel?

Just 3-5 minutes for a full tank, similar to petrol.

What’s the driving range?

Around 311 WLTP miles, suitable for long journeys.

Is it as comfortable as a regular X5?

Yes, with air suspension providing a smooth, quiet ride.

When will it be available to buy?

Currently a pilot prototype; production undecided.

How does it compare to battery EVs?

Faster refueling and lighter weight, but needs hydrogen stations.