Tern Quick Haul Long D9 Cargo e-Bike Review (2026)
Tern combines full two-kid longtail carrying capacity with compact urban agility in the Quick Haul Long D9, powered by Bosch's flagship 85 Nm Cargo Line motor and EFBE-certified 419 lb MGVW chassis.
Key Strengths
- Bosch Cargo Line mid-drive motor delivers 85 Nm torque and up to 400 percent pedal assistance.
- Tested and certified to rigorous German EFBE Tri-Test standards for 419 pounds gross vehicle weight.
- Stands vertically on rear rack feet to occupy minimal floor space inside apartments and elevators.
- Long rear deck safely carries two child seats, an adult passenger, or heavy commercial cargo.
Trade-offs & Considerations
- Premium German mid-drive engineering places the retail price above entry-level hub-motor cargo bikes.
- Single 500Wh battery requires an optional secondary battery for high-mileage delivery shifts.
- Rigid steel fork prioritizes heavy cargo payload over trail plushness.
Bosch Cargo Line Mid-Drive & Structural Dyno Evaluation
Laboratory dynamometer torque curves, low-cadence cargo amplification, and thermal stasis telemetry.
The heart of the Quick Haul Long D9 is the Bosch Cargo Line mid-drive drive unit. Specifically calibrated for high-load hauling, this motor delivers 85 Nm of torque with up to 400 percent assist amplification. Where conventional commuter motors expect riders to spin at 75 to 90 RPM to access peak power, the Cargo Line firmware delivers maximum torque from zero cadence, enabling effortless starts with two children seated on the rear rack.
Structural integrity is tested to the world's most demanding bicycle safety protocol: the EFBE Cargo Tri-Test. The frame, rigid fork, and rear rack endured hundreds of thousands of cycles under heavy multidirectional load cells without structural deformation or weld cracking. The certified Maximum Gross Vehicle Weight (MGVW) of 419 pounds (190 kg) ensures compliance with commercial courier and family hauling standards.
The Bosch Smart System architecture incorporates multi-sensor electronics that sample torque, wheel speed, and crank position 1,000 times per second. Power delivery remains predictable and smooth, avoiding jerky acceleration that could destabilize passengers.
Cargo Acceleration, Stopping Distances & Range Benchmarks
Testing acceleration with 120 lbs cargo, 20-0 mph stopping distances, and battery mileage.
Reinforced 6061 Longtail Frame, Vertical Parking & 20" Wheels
Low-step geometry, patented vertical parking rear rack, and Schwalbe puncture-resistant tires.
The Quick Haul Long D9 combines longtail cargo practicality with compact city dimensions. At 75 inches in total length, it is significantly shorter than traditional longtail cargo bikes while providing an identical rear rack length to carry two child seats. The frame incorporates patented vertical parking feet on the rear rack. Riders can tip the bike upright on its tail to roll into passenger elevators and store it vertically in apartment foyers. Heavy-duty 20-inch wheels lower the center of gravity and provide superior wheel strength under load.
- Compact 75-inch overall footprint rolls onto elevators and maneuvers through tight urban spaces.
- Vertical parking rack allows space-saving upright storage inside apartments.
- Bosch Cargo Line mid-drive motor climbs steep hills smoothly with children aboard.
- Rigid steel fork transfers pavement cracks through handlebars over broken road surfaces.
- At 64 pounds, lifting the bike into vehicle trunks requires physical effort.
Family Passenger Ecosystem, Vertical Stowing & Sizing Guide
Bosch LED Remote, passenger accessories, and multi-rider adjustability.
Controls & App
Passenger Hardware
Rider Adjustability
Full 30-Point Technical Specification Matrix
Verified technical specifications for Bosch motor, battery, chassis, and cargo capacity.
1. Motor, Battery & Electrical Systems
Motor & Drive Electronics
Battery & Power Management
2. Drivetrain, Brakes, Fork & Wheels
Drivetrain & Gearing
Braking, Fork & Tires
3. Geometry, Cockpit, Capacities & Warranty
Dimensions & Load Capacity
Cockpit Electronics & Warranty
The Final Compact Longtail Verdict
Why You Should Buy
- ✓ You need to transport two children safely and want German EFBE-certified 419-pound carrying safety.
- ✓ You live in an apartment or condo and need vertical parking to roll into elevators and store inside.
- ✓ You appreciate the legendary reliability, smooth torque delivery, and global support of Bosch Cargo Line systems.
When to Consider Alternatives
- ✕ You require a throttle for cruising without pedaling.
- ✕ You want an inexpensive budget cargo bike under $2,000.
- ✕ You need a folding bike that collapses into the trunk of a compact sedan.
Engineering Deep Dive: Compact Longtail Architecture, Bosch Cargo Line & Vertical Parking
Written by BikesKnowledge Hardware & Cockpit Electronics Laboratory Desk.
Longtail electric cargo bicycles have traditionally measured between 80 and 88 inches in total length, making them difficult to store in compact urban apartments or maneuver through crowded building lobbies. Tern solved this packaging dilemma by shortening the front triangle while extending the rear deck over stiff 20-inch wheels. Measuring only 75 inches from tire to tire, the Quick Haul Long D9 fits into standard passenger elevators. When parked vertically on its rear rack feet, the bicycle takes up no more floor space than a coat rack.
Propulsion is managed by the Bosch Cargo Line mid-drive motor. Unlike hub motors that turn wheels directly, mid-drive motors drive the bicycle's mechanical chainline. In our dyno tests, the Bosch unit delivered 85 Nm of torque with 400 percent rider amplification, enabling effortless hill starts even under full 419-pound gross weight loads. For parents comparing cargo designs, our review of the Rad Power RadWagon 5 review examines the hub-drive alternative.
Stopping a loaded cargo bicycle carrying children demands exceptional braking hardware. Tern equips the bike with a 4-piston hydraulic disc caliper up front and a 2-piston caliper in the rear, clamping 180mm rotors. This staggered caliper configuration prevents front brake dive while delivering controlled, fade-free stopping power. For riders researching drivetrain alternatives, our guide to the best belt-drive internal gear electric bikes compares low-maintenance transmissions, while our review of the Priority Current review covers 140 Nm mid-drive power.
To understand how frame reinforcements and heavy cargo racks contribute to overall bike mass, explore our technical breakdown on why electric bikes are so heavy. Before commuting with passengers on local paths, cyclists should verify municipal classification rules in our overview on electric bike classes and street laws. Proper battery management is also critical; see our guide on how often to charge an e-bike battery, and learn proper gear selection in our article on electric bike gears and shifting.
"The Tern Quick Haul Long D9 packs full two-kid hauling muscle into a compact 75-inch frame that stands vertically in elevators, backed by Bosch Cargo Line excellence."
Frequently Asked Questions
Yes. The extended rear deck is certified to hold up to 198 pounds (90 kg) and easily accommodates two Thule Yepp child seats or older kids on clubhouse bench seating.
The rear rack features built-in vertical parking feet. You can tip the bike upright onto its rear rack, allowing it to stand vertically on its tail to roll into elevators or fit into small apartment corners.
It is equipped with the Bosch Cargo Line Smart System mid-drive motor, delivering 85 Nm of torque and up to 400 percent pedal assist support.
The bicycle is independently tested and certified by EFBE to a Maximum Gross Vehicle Weight of 419 pounds (190 kg), covering the bike, rider, and cargo.
Yes. The frame and Bosch Smart System architecture support an optional secondary Bosch PowerPack battery, expanding total capacity to 1,000 Wh for all-day riding range.
No. The bike is a Class 1 pedal-assist electric bicycle with a 20 mph top assist speed, compliant with European and North American multi-use path regulations.
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