Tern Vektron P5i Folding E-Bike Review

By Electric Bike Report

The subject of ride quality can be a complex topic when discussing premium, Bosch-equipped e-bikes, but I found the Vektron P5i refreshingly straightforward and simple. Bells, whistles, and tons of features can make a bike stand out, but simplicity is also a beautiful thing; the Vektron is a great example of the latter.

The Vektron P5i’s handling was also a highlight. At 54 lbs, it may not exactly be lightweight, but it is far more nimble and maneuverable than many other folding e-bikes we’ve tested weighing upwards of 70 lbs. The bike steered quickly, cornered predictably, and generally felt lively and agile.

I’ve discussed the motor’s responsiveness, but it’s worth reiterating that the bike is remarkably natural-feeling and intuitive. As we’ve commonly found when reviewing Bosch-equipped e-bikes, the Vektron’s pedal assist system is top notch, with mostly quiet operation, smooth power delivery, and enough power to supplement your pedaling without overtaking it.

I found the P5i to be approachable and uncomplicated with a low learning curve. The bike’s interface is straightforward, with a handlebar-mounted button pad to adjust power level, a basic-but-effective black-and-white display with a wide array of ride data, a high-powered integrated lighting system, and a twist shifter for the 5-speed Shimano Nexus hub.

As a folding e-bike, the Vektron’s portability factor is another important element of its engineering and construction; Tern advertises a 10-second folding time to get the bike ready for storage, packing into a vehicle, or rolling on public transit.

Additionally, once folded, the drive-side pedal can be removed via a quick-release mechanism to reduce the bike’s overall width. It’s an elegant design that is fast, works well, and feels generally intuitive. Once collapsed and folded, the bike measures roughly 33.5”L x 16”W x 27.5”H.

Tern’s e-bikes are also known for a unique party trick: many models offer the ability to stand vertically on four “legs” that protrude from their cargo rack. The Vektron is one such model; the bike can stand upright when folded or unfolded for stability and to take up less floor space.

E-bikes span the full gamut of price points, from cheap and low-quality to affordable yet functional to premium and optimized for reliability and performance. With a price point over $4k, the Vektron P5i is decidedly on the costlier end of the spectrum, but its quality construction, smart component package, and thoughtful design justify its expense.

We found much to appreciate about the top-tier Vektron. Its adjustability made it comfortable and accommodating and its motor gave it an intuitive and natural feel, while its simple user interface made it easy to learn and operate. Additionally, its modest weight and fast-folding design gave the bike an uncommon level of practicality.