Jason Momoa has converted his classic 1929 Rolls-Royce Phantom II into an EV

  • Jason Momoa is the proud owner of a 1929 Rolls-Royce Phantom II
  • The American actor instructed British firm, Electrogenic, to convert the century-old Roller into a fully fledged EV
  • The Phantom II retains its original coachwork by H. J. Mulliner & Co. and other timeless features, but now packs a whisper-quiet, emission-free electric powertrain

Published on Feb 09, 2024 at 6:53 PM (UTC+4)
by Adam Gray

Last updated on Feb 13, 2024 at 1:29 PM (UTC+4)
Edited by Alessandro Renesis

Jason Momoa may be famous for his turns in Aquaman, Game of Thrones, and Dune – but he’s also made a name for himself another way.

A self-proclaimed gearhead, the American actor has an impressive car collection, which includes a stunning 1929 Rolls-Royce Phantom II.

It goes without saying such a classic car doesn’t make for a great daily – but Momoa had other ideas.

READ MORE! The 2025 Porsche Taycan charges in rapid time and goes 0-60 in 2.3 seconds

Not only did Jason Momoa steal the show in Fast X, he’s in the spotlight again for bringing his 1920s Roller into the 21st century by converting it into a fully fledged EV.

To fair it’s not the first all-electric Roller – that crown belongs to the Rolls-Royce Spectre.

“In order to pull off this dream project, I had to find the right partner,” Momoa said in a statement.

“I needed a team that would appreciate the storied history of this car while updating its technology.”

British outfit, Electrogenic, ticked those boxes.

The company has a track record of turning classic cars into contemporary electric rides and has even developed nifty “drop-in” EV conversion kits.

“Electrogenic is all about honoring vintage cars,” Momoa added. “Making them electric without losing any of the vehicle’s character.”

And what a fantastic job Electrogenic has done modernizing this jewel of British automotive history without erasing its charming 1920s touches.

Despite being more than 100 years old, the Phantom II retains its original coachwork by H. J. Mulliner & Co. as well as other timeless features.

However, it now packs a whisper-quiet, emission-free electric powertrain.

As you can imagine, this was no easy feat, with Electrogenic director Steve Drummond saying that it was the most complex classic car EV conversion the team has ever undertaken.

Apparently, a team consisting of engineers, programmers, and fabricators worked with Jason Momoa for 18 months to bring his dream to reality.

Before the conversion, the Phantom II was powered by a mammoth 7.7-liter pushrod straight-six engine that was bolted directly to a four-speed manual gearbox.

It may not sound much by today’s standards, but it churned out between 40 and 50 horses, which enabled it to reach well over 128 km/h (80 mph) in its heyday.

But that lump and gearbox were removed, replaced with 93 kWh batteries, which were integrated into the existing architecture.

The car’s electric motor, which sits neatly between the chassis rails, receives power from said batteries via a custom single-speed direct drive transmission.

Around 150 kWh of grunt and 229 lb-ft of torque is channeled to a fixed reduction gear, which in turn delivers 734 of twist to the prop shaft.

As well as using custom software developed by Electrogenic to manage the systems, the team also updated the car’s original cable-operated braking system.

The original controls and gauges were repurposed, and a high-end multi-speaker HiFi system was also added.

You can see the painstaking conversion process in Momoa’s new show, On the Roam.

It’s a documentary series following the Hawaii native as he travels across the globe meeting pioneering creatives, from athletes and musicians to motorcycle fabricators and car restorers.


Adam Gray

Adam Gray is an experienced motoring journalist and content creator based in the United Kingdom. Using his media accreditation with manufacturers’ press offices, Adam test drives the latest cars and attends new vehicle press launches, producing written reviews and news pieces for supercarblondie.com. Before joining the Supercar Blondie team, Adam was Motoring Editor for Portfolio North magazine, North East Motoring Editor at Reach plc, and provided motoring content on a freelance basis to several lifestyle and business publications in the North of England. When he’s not behind the wheel of the latest car, Adam can be found at his local rink playing ice hockey or supporting his beloved Middlesbrough FC.