Shell Eco-marathon Europe and Africa 2025 | Polyjoule

Europe and Africa 2025

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301

FR0054001 Polyjoule

Polytech Nantes

Prototype P Battery-Electric BE

Results

Attempt 2

1,221.3

758.9

km/kWh

mi/kWh

Best attempt

Current Rank

1st / 19

1 1,221.3 km/kWh 758.9 mi/kWh

2 953.7 km/kWh 592.6 mi/kWh -21.9%

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 Entry

9 / 9

Bound/Printed documentation (67 c)

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

Charger (57 d iii)

SHELL logo front / both sides (4 a-c)

Race number front / both sides (4 a-c)

Partner sticker both sides (4 a-c)

Lift here arrow stickers (26 f)

Opening mechanism stickers (30 c)

Other stickers < 400 cm² (4 d)

Passed

2. Vehicle Weight

2 / 2

Passed

3. Driver & Safety Gear

12 / 12

Appropriate motorsports helmet - Primary Driver (21 a-f)

Three-quarter helmet - Primary Driver (21 b)

Helmet label readable - Primary Driver (21 c)

Helmet has no cracks/indentations - Primary Driver (21 c)

Visor is clear and has no cracks - Primary Driver (21 d)

Racing suit (s) / Gloves - Primary Driver (21 d)

Single piece fire retardant racing suit - Primary Driver (22 a)

Shoes; socks & balacava/FRC - Primary Driver (22 b, d)

Driver weight (> 50kg) - Primary Driver (20 a)

Ballast required?

Ballast based on lightest driver (20 c)

Ballast of suitable type, proper location, sealed (20 b)

Passed

4. Brakes

11 / 11

Brake documentation (67 c ii)

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

1 single Hydraulic circuit per axle (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

5. Driver Safety

18 / 18

Safety belt must be designed for motorsports use (29 g)

Mounting points are clearly accessible for inspection (29 e)

Safety Belts = 5 mounting points (29 a-b)

Safety Belts - chassis fixing (29 d)

Must have 5 independent belts attached to structure (29 a)

Crotch strap under body (29 b)

Top strap at 10° angle (29 b)

Safety belt must be in straight line between mounting point and shoulder (29 f)

Length adjustor high enough for adjustement (29 b)

Safety belt has a tight fit (no slack) (29 c)

No modifications of safety belt (29 h)

Safety belt strength verified (29 d)

Roll bar resist 70 kg all directions (26 d)

Roll bar 50 mm > driver's head - Primary Driver (26 b)

Roll bar width > shoulders - Primary Driver (26 c)

Front vis 180° & Tint - driver must be seen - Primary Driver (28 a)

Rear visibility - see cheat sheet - Primary Driver (28 b)

Driver exit < 10 seconds - Primary Driver (30 a-d)

Passed

6. Vehicle Dimensions

6 / 6

Passed

7. Mechanical Vehicle Design

27 / 27

Passed

8. Electrical Vehicle Design

21 / 21

Correct vehicle electrical schematic (67 c)

Charger built for battery (57 d iii)

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

Capacity < 1000 Wh (57 d iv)

Max 60 V Peak (57 a)

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

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 ADD fuse size (57 e)

Elec system has proper fuse protection (57 e)

Electrical enclosures - transparent (57 j)

Wiring organized and safe (27a, 57 k)

Electrical wiring connections visible/no splices (57 k)

JM Installation in engine compartment (56 c)

JM visible and accessible from outside (56 b)

JM Correct circuit location (56 c)

JM Counting Correctly (56 c)

Internal Estop Switch (37 f i)

External Estop mounting location (37 f ii)

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

Blue triangle sticker (37 f iii)

Passed

9. Energy Verification

13 / 13

Documentation - Schematic (67 c)

Documentation - Battery/BMS (67 c)

Documentation - Motor controller (67 c)

Documentation - Motor size (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)

JM Position in circuit (56 d)

Estop Function - Physical Isolation of Batt (37 d)

Dead man's switch (37 h)

Efficiency of emergency shutdown (37 a-c)

JM Counting Correctly (56 c)

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

Passed

10. Final Check

4 / 4

Previous participation
Event	Vehicle category	Energy class	Rank	Result
Poland 2026	Prototype P	Battery Electric Battery Electric	1	1094.89km/kWh 680.34mi/kWh
Europe and Africa 2024	Prototype P	Battery Electric Battery Electric	1	1259.25km/kWh 782.46mi/kWh
Europe and Africa 2023	Urban Concept UC	Hydrogen Fuel Cell H2	1	333.2km/m3 207.04mi/m3
Netherlands 2022	Urban Concept UC	Hydrogen Fuel Cell H2	-	Did not pass technical inspection

Europe and Africa 2025

FR0054001 Polyjoule

Polytech Nantes

Results

Attempt 1

Attempt 2

Attempt 3

Attempt 4

Attempt 5

Current Rank

Technical Inspections

1. Inspection Queue Entry

2. Vehicle Weight

3. Driver & Safety Gear

4. Brakes

5. Driver Safety

6. Vehicle Dimensions

7. Mechanical Vehicle Design

8. Electrical Vehicle Design

9. Energy Verification

10. Final Check

Previous participation