Electric bikes

Find the right e-bike to get you zooming from A to B.

electric bike on hill

Tern

GSD

recommended

76

Avg price

$6250

Member Reviews

  • Type

    Cargo

  • Frame type

    Low step

The Tern GSD is unique among e-bikes. It's a cargo bike, capable of carrying two kids or a full load of groceries on the rear rack, but with 20 inch wheels it's no bigger than a 'normal' bike. It's a bike that can be a practical alternative to a car for many trips.

The GSD is a heavy bike, but the Bosch Performance motor makes light work of the weight up hills with assistance delivered smoothly at all speeds. There's space to add a second battery too.

The bike feels reassuringly solid at speed, though its stiff frame and small wheels mean it can feel a bit 'harsh' on rough surfaces. The handling is good at lower speed, which makes the bike easy to handle around the city. The GSD is the most adjustable bike of all we tested, its telescopic seatpost and handlebar meant riders of all sizes could get comfortable.

While it's quirky and costly, and not a bike that'll suit everyone, if you're looking for a bike that can do more than most bikes, this Tern is well worth adding to your shortlist.

Test results

  • 79
    Motor system
  • 73
    Bike style
  • 85
    Motor - Responsiveness
  • 70
    Motor - Hill climbing
  • 75
    Motor - Speed assistance
  • 85
    Motor - Interface
  • 73
    Bike - Slow speed
  • 72
    Bike - Riding fast
  • 50
    Bike - Rough terrain
  • 100
    Bike - Practicality

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Good points

  • Very good motor responsiveness.
  • Good motor assistance climbing hills.
  • Good motor assistance at speed.
  • Very good display and controls.
  • Bike is good to pedal quickly.
  • Bike has good slow speed balance.
  • A second battery can be added.
  • Has a very large and versatile rear rack.
  • Has plastic mudguards and a very stable double kickstand.
  • Highly adjustable seatpost and stem fit a wide range of rider heights.
  • Low step frame is easy to mount and dismount.
  • Has built in lights.
  • Has hydraulic disc brakes.

Bad points

  • Bike is just OK on rough surfaces.
  • Doesn't have a suspension fork.

How we test

Each e-bike was taken on a test route by two riders. The 5km route in and around Wellington’s CBD included city traffic, fast flat roads, hills, kerbs, wooden bridges and a busy waterfront path shared with pedestrians.

We also put the e-bikes through a gruelling 20km route around Wellington’s Wadestown and Northland suburbs. The main challenge was climbing a 2km-long hill five times at a steady 20km/h (a kilometre of vertical ascent) and descending the same twisty narrow road between climbs. It also included a short, steep section of rough path with a narrow barrier negotiated at walking pace, an undulating 5km of suburban streets, and a steep descent requiring brakes to keep the e-bike to the 50km/h speed limit.

Our riding tests, along with a static assessment of the features and functions of each e-bike, were used to score the performance of the motor system and the bike. Overall score includes:

Motor system (50% of overall score)

  • starting, stopping and responsiveness (40% of motor system score)
  • hill climbing assistance (30%)
  • controller and display (20%)
  • high-speed assistance (10%).

Bike (50% of overall score)

  • uphill and slow riding performance, ease of mounting and dismounting, off-bike handling (50% of bike score)
  • downhill and fast flat riding stability, safety and comfort (30%)
  • comfort and safety on bumpy and rough surfaces (20%).

Model

  • Avg price

    $6250

  • Type

    Cargo

  • Frame type

    Low step

  • Alternative frame type

    No

  • Sizes available

    One size

Specifications

  • Motor brand

    Bosch

  • Motor model

    Performance

  • Motor location

    Mid

  • Power

    250W

  • Max assist torque

    63Nm

  • Max assist speed

    32km/h

  • Assist settings

    4

  • Walk mode

  • Thumb throttle

  • Battery size

    400Wh

  • Battery location

    Seat tube

Features

  • Wheel size

    20"

  • Tyre width

    62mm

  • Tyre tread

    Road

  • Mudguards

    Plastic

  • Kickstand

    Double - centre mount

  • Rear rack (l x w cm)

  • Gears

    10 / Trigger

  • Suspension fork (travel)

  • Suspension seatpost

  • Lights

  • Brakes

    Disc (hydraulic)

More info