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Editor's Note

Having spent a week zipping around town on the RoadRunner D4+ 4.0, what stands out is its robustness and reliability as an urban mobility solution. It delivers where it counts but doesn't forget that sometimes less experienced riders might need gentler handling features.

RoadRunner D4+ 4.0

RoadRunner D4+ 4.0
  • Range

    34 Miles

  • Top Speed

    34 MPH

  • Motor Power


  • Battery Size



  • Solid build quality
  • Impressive speed and acceleration
  • Reliable range and battery life
  • Responsive hydraulic brakes


  • Heavy at 70 lbs
  • Can struggle on steep hills with heavy loads
  • Suspension could be improved for comfort
  • Aggressive braking may unsettle some riders

Product Overview

Electric scooters are a godsend for those looking to weave through the city with ease, and the RoadRunner D4+ 4.0 is no exception. Perfect for the urban adventurer or the last-mile commuter, this scooter combines speed and convenience in a package that's hard to overlook. However, adrenaline junkies seeking extreme speeds might find this ride a bit tame.

Design and Build Quality:

Upon unboxing, I was immediately struck by the robust frame of the RoadRunner D4+ 4.0. Built like a tank with quality materials, its solid structure reassured me of its durability during my daily escapades. Every component felt premium to the touch, reflecting thoughtful craftsmanship. Assembly was straightforward, making it easy to get up and running quickly.

Overall Performance:

Performance-wise, I put this e-scooter through its paces on morning commutes and weekend joyrides alike. Zipping along at a top speed of 34 MPH felt exhilarating without being overbearing. Hill climbs were tackled with surprising gusto thanks to its notable hill climb ability of 28 degrees, though I must admit it started to struggle on steeper inclines when nearing max load. Braking was responsive with the hydraulic system offering peace of mind amidst bustling traffic.

The Motors & Battery:

With a powerful 2000w motor under its belt, acceleration was impressive – goodbye sluggish starts! The battery life did not disappoint either; it stayed true to the advertised 34-mile range even after several consecutive days of use. While exploring various terrains, from flat boulevards to rolling hills, the battery held up remarkably well without any significant drops in performance.

The Wheels & Braking:

Daily use highlighted just how much wheels and braking matter. The hydraulic brakes brought me to smooth halts when needed – critical in unexpected situations. However, despite their reliability, they could be a touch too aggressive for inexperienced riders. Meanwhile, wheel performance was solid across various pavements but struggled slightly on rougher tracks – remember this isn't an off-road vehicle.

Overall Handling:

Whether navigating crowded sidewalks or taking sharp turns, handling remained fluid and instinctive. Comfort wasn't an afterthought either; rides were mostly smooth although prolonged journeys did start to highlight the lack of suspension – my wrists can attest to that.

Maintenance and Repair:

Maintenance seemed minimal within my week-long test period; however, my toolkit remained close just in case. Dealing with customer service wasn't necessary but forums suggest that parts are accessible should DIY repairs be needed.

Additional Features:

On-board electric gauges provided clear information at a glance which made monitoring speed and battery levels hassle-free during rides. The quality remote control added convenience for those quick stops at the coffee shop without having to manually lock down your ride every time.


After thorough evaluation, I'd confidently give this e-scooter an 8/10 rating. Its balance between power and user-friendliness was impressive but there's room for improvement in comfort for long-distance travels.

RoadRunner D4+ 4.0 Specification

RoadRunner D4+ 4.0
70 lbs
Max Load
330 lbs
Hydraulic Braking System
34 Miles
Top Speed
34 MPH
Motor Power
Battery Size
Recharge Time
10 Hours
Hill Climbability
28 degrees

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