JackRabbit MG Doble Review | Ride Sessions For Two

Yes, we tested the MG Doble’s speed, but can I praise the batteries first?

Instead of using internal batteries like most brands do these days, JackRabbit designed external packs that wrap neatly around the top tube. To me, these are a perfect example of external batteries done right. I’m not a fan of seat-tube-mounted packs (they always look like an afterthought), and rack-mounted ones feel so twenty-teens. These, though? They look intentional, and I actually like the styling.

Now, on to range. JackRabbit quotes up to 48 miles or more on the MG Doble, depending on rider weight and other real-world factors, and that estimate proved accurate in our testing. In fact, it performed great at both ends of the assist spectrum.

We logged 36.1 miles in our high-power test and 50.7 miles in low power mode.

That’s terrific mileage. Actually, it’s borderline shocking once I dove into the data. With a 720Wh battery, a solid range was expected, but the efficiency numbers were stellar: just 20 watts per mile in the high-power test. For comparison, the average among throttle-only, moped-style e-bikes we’ve tested is 26.5 w/mi, and even across all bikes we test (most of which have the advantage of rider support to the motor via pedaling), the average sits around 22 w/mi.

If you want even more mileage, swapping batteries is easy — maybe too easy — which ironically made it one of my few small complaints. The packs use a simple latch knob underneath that lets you pop them off in seconds. Original JackRabbit riders asked for this change since they didn’t want to deal with barrel keys or another thing on their keychain. JackRabbit listened and went with an easy pull system here, but if you prefer extra security, locks are available as optional accessories.

I don’t love making too many comparisons in a review, but I think it’s appropriate to do in this one. With each new JackRabbit model we’ve tested, you can really see the motor power evolve. The JackRabbit OG couldn’t quite summit our 1.0 Hill Test at Hell Hole, while the sequel, the XG, made it up, but at one of the slower paces. They also had less powerful motors, though.

Now, at Hill Test 2.0 on the Devil’s Backbone, the MG Doble proved to be quite the conqueror. It climbed our test hill in 1:49, averaging 16.6 mph.

That’s especially impressive considering the MG Doble marks the 50th bike we’ve done a throttle-only test with on this hill, and it currently ranks 15th overall. The average completion time up the hill is 2:01, so… Not. Bad. At. All.

The 749W motor is plenty capable, which is exactly what you’d hope for on a bike built for two. It peaks at 1,080W and delivers 70 Nm of torque, so there’s real muscle behind that fun factor.

As long as you’ve got enough battery, there isn’t a hill I found that the MG Doble couldn’t handle, and that’s pretty encouraging for a “bike” that doesn’t even have pedals.

Just as we’ve seen the motors on JackRabbit bikes evolve over time, the same can be said for the brakes. The original JackRabbit used a single mechanical brake (stopping distances weren’t great), the XG improved things with two mechanicals (better, but still room for improvement), and now the MG Doble breaks new ground with hydraulic brakes… well, sort of.

This was an Electric Bike Report first; this is the first set of hybrid hydraulic brakes we’ve tested in our official database (which now includes nearly 300 bikes).

Here’s how they work: the levers operate like a standard mechanical system, where pulling the lever moves a cable that actuates a self-contained hydraulic unit. But instead of a single piston pressing the rotor (mechanical brakes), you get dual-piston pressure clamping down on the rotor from both sides (hydraulic brakes) from the hybrid setup. The result? Better stopping power, no question about it.

Why this system? JackRabbit designs its bikes with portability in mind (more on that in Ride Quality), and this setup essentially eliminates the risk of air getting into the lines while still offering the easy adjustability of a cable system. The tradeoff is a stiffer lever feel compared to true hydraulics—which you can usually modulate with one finger—but the results speak for themselves. This was the best brake performance we’ve seen on a JackRabbit to date.

In our tests, the MG Doble stopped in 24’6”. That’s a bit longer than our current all-bike average of 21’9”, but it’s still solidly within what we consider the safe zone (under 25’), and a first for the brand.

I’m of two minds on this setup. Most importantly, it’s capable of stopping within safe distances. It does require more lever effort—something I’m not wild about on a two-person ride—but it’s still a clear improvement over straight mechanicals. The system doesn’t need to be bled like hydraulics do, is simple to adjust, and fits with JackRabbit’s ethos of keeping things lightweight, portable, and affordable.

That said, the brake brand itself is unknown to us, so long-term durability remains a question mark. Personally, I’d prefer to see full hydraulics on future versions, but these hybrids are at least safe, effective, and a meaningful upgrade in the right direction.

The MG Doble is many things, but fun is what’s at its core. JackRabbit has always captured that spirit in its rides, and it’s no different here. From the moment you see it, it looks different, and it rides differently, too.

The look is great. There are four frame colors to choose from, and the frame itself has a sharp, distinctive style. The reach is a little long and can feel almost chopper-like, but slide forward on the seat and tilt the bars back, and it’s as comfortable an experience as you’ll find on any non-suspension bike.

Handling is smooth and stable. The mixed wheel setup keeps control balanced but still playful, and the smaller rear wheel makes riding with a second passenger much easier. Speaking of, I appreciate that a bike meant for two actually comes ready for the task—the elongated seat, passenger pegs, and wheel guards all come standard. Too often, those are treated as “optional extras” (even on a bike heavily marketed as a two-person ride), so kudos to JackRabbit for including them out of the box.

The foldable rider pegs also inspire confidence. They feel sturdy enough to stand on without hesitation, which is not something every small-format bike can claim.

JackRabbit also takes pride in portability, and the MG Doble stays true to that. The stem allows for quick and easy handlebar rotation, and with the pegs folded up, it measures just 7 inches at its widest point. Want even more compactness? The quick-release front wheel significantly shortens the wheelbase, making it easier to load into a trunk or small space. Score one for clever design.

If I had to change something, it would be the grips. They’re a bit firm for my liking, but that’s an easy DIY fix.

Finally, the MG Doble can also serve as a small workhorse (or “work rabbit”). It includes multiple mounting points along the seatpost, downtube, and fork, so you can add locks, bottles, or bag holders, or get creative with accessories like LED light kits and solar chargers. JackRabbit leans hard into customization, and the MG Doble gives you plenty of ways to make it your own.

This city/BMX/moped/whatever-you-want-to-call-it is just a really fun way to rip around on two wheels, and now that it’s two-rider capable, you can share the fun with a kid or your partner. Good times were meant to be shared, after all.

The MG Doble is a surprisingly capable ride, and I appreciate the clever design choices JackRabbit made to keep it both useful and fun. It’s got plenty of motor power, enough battery for longer rides, a few portability tricks up its sleeve, and it’s light enough to bring along just about anywhere.

It also looks sharp and unique, and the mixed-tire setup gives the frame confident, planted handling. Sure, I’d prefer locks to come standard on the batteries and the smoother pull of a full hydraulic system over the hybrids, but those are tradeoffs made for convenience and simplicity, and for most JackRabbit riders, they’re likely worth it.

Kudos where it’s due: JackRabbit started with a one-of-one micro product and turned it into a legitimate hit in the micro-EV space. The MG Doble shows that their move into larger—but still “micro-ish”—haulers is off to a very promising start.

Happy Riding! Make sure to let us know if you have any questions or if you think we left anything out in this review of the JackRabbit MG Doble down in our comments section.