Long-term testers appreciate the low maintenance needs of the belt drive (S5i) and hub gearing (both builds).
The NBD has an adjustable stem and fits a wide height range from 4'10" to 6'3".
Owners value the compact frame and folding handlebars.
The low step-through frame makes the NBD easy to mount.
The S5i's Performance Line 65Nm motor delivers ample power for hills, according to experts.
Both brakesets (Magura, Shimano) demonstrate ample stopping power in testing.
Experts say the Schwalbe Big Apple 2.15" tires provide good grip on pavement and gravel and help dampen road vibrations.
Reviewers highlight the bike's quiet operation.
Testers confirm Tern's claimed max range of 74 miles (S5i) and 67 miles (P8i) is achievable.
The suspension seatpost, padded saddle, and upright riding position produce a comfortable ride.
Testers enjoy the NDB's nimble handling and narrow turning radius.
Owners praise the bike's stability.
The NBD rides well without motor assistance, according to reviewers.
The NBD's rear rack doubles as a stand for vertical storage.
The NBD comes with fenders, lights, a cafe lock, rear rack, full chain guard, and mounting points for various accessories.

4 reasons not to buy

The Tern NBD is expensive, especially the S5i configuration.
The kickstand isn't very sturdy. Testers say the bike can fall when loaded if it's not perfectly upright.
One reviewer complains that the pedals become slippery when wet.
Cables crossing in front of the headlight block its beam slightly.

Bottom line

The Tern NBD is a mid-drive commuter e-bike available in two builds. Both have Shimano Nexus hubs and Bosch motors. The premium S5i has more range, torque, a belt drive, and a 5-speed hub. The NBD earns praise for its high quality, excellent performance, comfort, stable ride, and practical features. Complaints are mostly minor, the most notable being a poorly designed kickstand. However, the Tern NBD's popularity with testers and owners is overshadowed by its high price.

Level 1 expert

The Tern NBD S5i is a compact urban e-bike that can carry a surprisingly large load.

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The New Tern NBD S5i: Huge Driving Fun [German]

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The Tern NBD S5i is a comfortable compact bike for versatile use. In our test, parents transporting children, pregnant women and older people all felt absolutely safe on the bike.

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