E Cars

E cars are similar in function to B cars. E cars are used in the middle of trains ("cattle cars"). They do not have automatic controls for revenue operation, and rely on a lead and trailing units (D cars) for their operation in revenue service. They can run under manual control as single or multiple units in yards.

Onboarding Dates:
All numbers are very rough estimates, given various gaps in car onboarding process. There are overlaps.
4001-4006 (2016 built, prototypes/pilot cars, 2018 onboarding)
4007-4012 (2017 built, 2018 onboarding)
4013-4038 (2018)
4039-4093 (2019)
4094-4156 (2020)
4157-4183 (2021)
4184-4273 (2022)
4260s-4390s (2023)
4370s-4520s (2024)
4520s-4660 (2025)
4660s-4710s (2026/TBD)

E car 4240 Interior

General Details

Builder: Bombardier/Alstom
Build Location: Plattsburgh, NY/Pittsburg, CA
Years of Construction: 2016-2025+
Quantity: 465 (initial orders), 300+ expansion order for CBTC and Santa Clara extention.
Length: 70 feet
Weight (Empty): 64,500-66,500 lbs
Seats: 52
Seat Manufacturer: Keil
Propulsion: 4 x 148 HP IEC Holden TM1302SP AC Motors,
Brakes: Knorr dynamic/regenerative to 3 mph, Hydraulic friction braking below 3 mph.
Auxiliary Power Supply Equipment (APSE): Meppi
Horn: Kockum Sonics
Coupler: Dellner

4001-4006 (Pilot Cars), Onboarded 2018

The first E cars were 6 prototype cars made to test the Fleet of the Future before production. They have been extensively modified and now roll in revenue service.

Click on each thumbnail to view the full-size image.

Notable Cars
4001 - First E car
4002 -
4003 -
4004 - Multi Area pilot car
4005 -
4006 -

4007-4099 (2018-2020)

Notable Cars
4014 - Same number as famous UP Big Boy
4017 - Used in extra video 9/7/19 at Milpitas
4018 - Used in extra video 9/7/19 at Milpitas
4019 - Used in extra video 9/7/19 at Milpitas
4020 - Test train to Berryessa 6/19.
4021 - Test train to Berryessa 6/19
4030 - Test train to Berryessa 6/19. First Car Completed M mod Hayward Shop 12/20
4034 - Missing number on X end right side 6/19
4035 - Missing number on X end right side 6/19
4038 - No interior car numbers on x and y end 3/20
4043 - Displayed in Pittsburg, CA plant for news release on FOTF assembly site to open, 2019
4078 - No car number inside 6/4/20

4100-4199 (2020-2022)

Notable Cars
4124 - Damaged 8/22, stored as of 2024.
4125 - See above pic for Y end interior car number
4129 - Very strange interior end numbers 5/22
4144 - Old bike rack and seat layout 10/23
4174 - Missing car number/end decal YL 9/23

4200-4299 (2022-2023)

Notable Cars
4257 - C25 derailment, 3rd car from tail end (next to 4311) 1/1/24
4260 - This was the 1000th BART car ATP Transit rode in revenue service, on 6/24/23. (This is my site)

4300-4399 (2023-2024)

Notable Cars
4311 - Derailed and damaged, split switch at C25 interlocking 1/1/24

4400-4465 (2024)

The last of the inital 775 FOTF cars was delivered in July 2024.

Notable Cars
4449 - Same number as SP GS-6 Daylight
4465 - Final E car of original contract/order. Assigned to Hayward Test Track.

4466-4467 (2024)

Not quite sure what contract these cars were under. BART documentation somewhat conflicts with other BART documentation.

Possibly:
-Replacements for crashed/damaged cars?
-Actually under Core Capacity Program contract?
-Penalty due to reliability problems early on with the fleet?

4468-4499 (2024) - Core Capacity Program

The expansion orders include hundreds more Fleet of the Future cars (306 cars for Core Capacity - 30 trains per hour in Transbay Tube using CBTC). These cars round off the 4400s.

The first few dozen of these cars were already under construction as of July 2024. The first of these cars entered service by October 2024.

4500-4599 (2024-2025) - Core Capacity Program

The 4500s are part of the Core Capacity expansion order of cars. The first of these cars entered service by November 2024, and deliveries and onboarding continued through March 2025.

4600-4699 (2025) - Core Capacity Program

The 4600s are part of the Core Capacity expansion order of cars. The first of these cars were delivered in March 2025, and the first of these entered service by April 2025.

The first 4600 I have seen in service was 4604 on a Yellow Line train on 4/7/25.

HTT Log:
4600s - Late March 2025
4610s - April 2025
4620s - May 2025
4630s - May to June 2025
4650s - mid-June 2025
4660s - mid-June 2025
4670s - June 2025
4680s - July 2025
4690s - July-August 2025

Notable Cars
4690 - 1000th FOTF car, with the carbody made in Mexico in May 2025, final assembly in Plattsburg through July 2025, and Hayward Test Track testing July-August 2025.

4700-4773 (2025+) - Core Capacity Program

Most 4700s are part of the Core Capacity expansion order of cars.

As of January 2026, it appears the District has paused the delivery/acceptance of new cars, around car 4760.
BART has 1070 D and E cars (310 D, 760 E), compared to the former 669 legacy car fleet. This large fleet has stressed the capacity of the system to store these car. Additionally, these new cars were delivered far ahead of their true need (specifically these 306 add-on cars), which assumed a need for x30 10 car trains per hour through the Transbay Tube.

BART currently runs a maximum of 15 trains per hour through the tube, of which all are 6 to 9 cars long (less than half of the 300 cars per hour calculation). According to my calculations, BART has the lowest fleet utilization of all large (>250 car fleet) rapid transit systems in the United States, hovering at about 50% of the fleet needed for peak service, due to low ridership recovery as compared to large eastern systems.

HTT Log:
4700s - Late 8/2025. Entered revenue service by 9/2/25.
4710s - 9/2025, entered service starting in 9/2025
4730s - First entered service by late October 2025
4760 - Entered service late 2025/Jan 2026. Last car of the 760 E car fleet as of January 2026.