Shell Eco-marathon United States 2026 | Saguaro Racing Team | Instituto Tecnológico y de Estudios Superiores de Monterrey Campus Sonora Norte

United States 2026

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MX0015001 Saguaro Racing Team

Instituto Tecnológico y de Estudios Superiores de Monterrey Campus Sonora Norte

Prototype P Battery-Electric BE

Results

Attempt 2

126.0

78.3

km/kWh

mi/kWh

Best attempt

Current Rank

21st / 23

20 160.0 km/kWh 99.4 mi/kWh +26.9%

21 126.0 km/kWh 78.3 mi/kWh

22 121.3 km/kWh 75.4 mi/kWh -3.7%

Technical Inspections

Before they get on track, Prototype vehicles need to pass a series of 9 technical inspections. For some, the only goal is getting through this test. Many never even make it that far.

9/9
Complete 9/9 inspections passed

Passed

1. Inspection Queue Entry

4 / 4

Passed

2. Driver's Control

15 / 15

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

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)

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

Fire retardant gloves - Primary Driver (22 c)

Flat, closed toe shoes - Primary Driver (22 b)

Cotton socks, no bare skin visible - Primary Driver (22 b, e)

FCR balaclava if used - Primary Driver (22 d)

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

Ballast required? (20 b)

Ballast based on lightest driver (20 b)

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

Number of ballast locations (20 b)

Passed

3. Vehicle Dimensions

6 / 6

Passed

4. Brakes

8 / 8

Passed

5. Driver Safety

21 / 21

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)

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

Crotch strap under body (29 b)

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

Safety belt has a tight fit (no slack), length adjustor high enough for adjustment (29 c)

No modifications of safety belt (29 h)

Safety belt strength verified (29 d)

Internal/ext'l opening mech effective/intuitive (30 c)

Method of opening accurately marked with sticker (30 c)

No adhesive tape to close driver compartment from outside (30 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)

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

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

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

Quality of body driver collision protection (26 a-d)

Front Crumple Zone ≥ 100 mm (25 a ii)

Crumple space-protect from front/side impact (25 a) ii, 26 a)

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 Vehicle 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 ADD fuse size (57 e)

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

Drivers Display (57 i)

Elec system has proper fuse protection (57 g)

Electrical enclosures - transparent (57 j)

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 g) i)

External Estop mounting location (37 g) ii)

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

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. Final Check

4 / 4

Previous participation
Event	Vehicle category	Energy class	Rank	Result
Americas 2025	Prototype P	Battery Electric Battery Electric	11	127.58km/kWh 79.27mi/kWh

United States 2026

MX0015001 Saguaro Racing Team

Instituto Tecnológico y de Estudios Superiores de Monterrey Campus Sonora Norte

Results

Attempt 1

Attempt 2

Attempt 3

Attempt 4

Current Rank

Technical Inspections

1. Inspection Queue Entry

2. Driver's Control

3. Vehicle Dimensions

4. Brakes

5. Driver Safety

6. Mechanical Vehicle Design

7. Electrical Vehicle Design

8. Energy Verification

9. Final Check

Previous participation