Shell Eco-marathon Brazil 2026 | Unisabana Herons EV

Brazil 2026

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304

CO0001001 Unisabana Herons EV

Universidad de la Sabana

Prototype P Battery-Electric BE

Results

Attempt 3

339.2

210.7

km/kWh

mi/kWh

Best attempt

Current Rank

3rd / 8

2 339.6 km/kWh 211.0 mi/kWh +0.1%

3 339.2 km/kWh 210.8 mi/kWh

4 302.9 km/kWh 188.2 mi/kWh -10.7%

Technical Inspections

Before they get on track, Prototype vehicles need to pass a series of 10 technical inspections. For some, the only goal is getting through this test. Many never even make it that far.

10/10
Complete 10/10 inspections passed

Passed

1. Inspection Queue Entrance

5 / 5

Passed (one driver)

2. Driver Checks

14 / 26

Passed

3. Brakes

10 / 10

Brake documentation (67 c ii)

2 independently operated Hydraulic brake system 1 front & 1 rear (43 a)

Foot operated front brake by single pedal (43 a)

Rear brake by single lever or pedal (43 a)

Brake pedal 1,000 mm², min width 30 mm (43 a v)

Brake rotors point in direction of wheel rotation (43 a)

No acting on tyres (43 a)

All wheels have brakes (43 a)

Ergonomy (43 a)

Effectiveness Ramp Test - Dynamic (43 b)

Passed (one driver)

4. Driver Safety

21 / 26

Passed

5. Vehicle Dimensions

6 / 6

Passed

6. Mechanical Vehicle Design

20 / 20

Vehicle weight < 140 kg (39 g)

Windows material (polycarbonate/Lexan) (25 f)

Electrical automotive horn, sound level > 85 dBa @ 4 m (31 a-c)

Fully closed body (25 h, k)

Solid floor & frame (25 j)

No external appendages or sharp edges (25 c)

Body panels do not change shape in wind (25 b, d)

Chain/belt guard (all rotating equipment) (34 g)

Running wheels (Pr:3/4) (25 a) i )

Rims compatible with the dimensions of the tyre (41 a-b)

Wheel compliance (41 a, 48 c)

Tyres are in good condition (49 d)

Tyre valves are accessible (49 f)

Bulkhead rigid & fire resistant (27 b, d)

Bulkhead isolates energy/driver compartment (27 a)

Wheels isolated from driver, chassis, or body (41 c)

Nothing touching wheels (e.g. batt, wires, etc...) (41 d)

Steering is efficient and has no play (32 b)

If electric steering, demonstrate default safe state (32 d)

Intuitive steering control (32 b)

Passed

7. Electrical Design

22 / 22

Correct vehicle electrical schematic (67 c)

Charger built for battery (57 d) iii)

Charging Protection (fire blanket, Lipo bag) (24 j)

Capacity < 1000 Wh (57 d) iv)

Max 60 V Peak (57 a)

Only one Battery, 2 terminals, single physical package (57 b) ii)

Solid metal containment tray OR Lipo bag (57 d) vi)

Batt mount firm, behind b/head, not under seat (57 c)

Main fuse < 300 mm from +ve terminal, ck fuse size (57 e)

Main fuse is sized correctly for the system (57 e)

Elec system has proper fuse protection (57 g)

Drivers Display (57 i)

Electrical enclosures - transparent (57 j)

Electrical wiring connections visible/no splices (57 k)

JM Installation in engine compartment (56 b)

JM visible and accessible from outside (56 b)

JM Correct circuit location (56 c) i)

JM Counting Correctly (56 c)

Internal Estop Switch (37 g) i)

External Estop mounting location (37 g) ii)

Latching External Estop push button (no push/pull levers) (37 h)

Blue triangle sticker (37 g) iii)

Passed

8. Energy Verification

10 / 10

Documentation - Schematic (67 c)

Documentation - Battery/BMS (67 c)

Documentation - Motor controller (67 c)

Self-built battery - cell level current protection (57 d) ii)

In-vehicle Battery Management System (57 d) i)

Purpose built motor controller (66 a)

Estop Function - Physical Isolation of Batt (37 e)

Dead man's switch (37 i)

Efficiency of emergency shutdown (37)

Battery + and - isolated from frame and body (57 f)

Passed

9. Telemetry

1 / 1

Passed

10. Final Checks

4 / 4

Previous participation
Event	Vehicle category	Energy class	Rank	Result
United States 2026	Prototype P	Battery Electric Battery Electric	3	395.98km/kWh 246.05mi/kWh
Brazil 2025	Prototype P	Battery Electric Battery Electric	4	310.52km/kWh 192.95mi/kWh
Brazil 2024	Prototype P	Battery Electric Battery Electric	-	Passed technical inspection
Brazil 2022	Prototype P	Battery Electric Battery Electric	-	Passed technical inspection

Brazil 2026

CO0001001 Unisabana Herons EV

Universidad de la Sabana

Results

Attempt 1

Attempt 2

Attempt 3

Attempt 4

Current Rank

Technical Inspections

1. Inspection Queue Entrance

2. Driver Checks

3. Brakes

4. Driver Safety

5. Vehicle Dimensions

6. Mechanical Vehicle Design

7. Electrical Design

8. Energy Verification

9. Telemetry

10. Final Checks

Previous participation