BYD e3 Parts
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Symptom Finder: Known Weak Points
| What you see or hear | Check first |
|---|---|
| Parking brake warning, or a rear brake that will not release | Check which parking brake is fitted first. The 2020 300 Chuxing Edition uses a handbrake cable and every other trim uses an electric parking brake, so inspect the matching parts and order the rear caliper to suit. |
| A replacement headlamp does not match the car | Check whether the car has LED or halogen lamps. The 2021 Chuxing and Lingchang fleet trims have halogen, and the other trims have LED, so order by the OE number on the old lamp. |
| Tyre pressure warning on the dashboard | Check the tyre pressures and look for a puncture first, then the pressure sensor in the wheel. The car has no spare wheel, so order tyres in 205/60 R16. |
| Whine or clunk from the front when pulling away | Check the driveshaft joints and the mounts first, then the single-speed reduction gear. Order the part by the OE number on the old unit, since 70 kW and 100 kW drive units exist. |
| Knock over bumps from the front of the car | Check the strut top mounts, springs and anti-roll bar links. Cars used for ride-hailing wear their front suspension faster, so inspect both sides. |
| Brake judder or grinding when stopping | Check the discs and pads. The front discs are ventilated and the rear discs solid, and discs can corrode on a car that sits between shifts. |
| Reversing camera image lost or blank | Check the camera and its wiring at the rear of the car. The e3 saloon and e2 hatchback have different rears, so order the camera or bracket for the e3. |
Most Replaced Parts on the e3
- Door skins, hinges and check strapsDoors open and close all day on ride-hailing cars, so hinges and check straps wear
- Springs and top mountsThe front struts work hard on a car that carries passengers all day
- Brake calipers, cylinders and hydraulicsThe one trim with a pull-up handbrake takes a different rear caliper
- Window regulatorsRear windows cycle constantly when the car carries paying passengers
- Shock absorbers and strutsFront struts and rear dampers are shared across trims, but match the number on the old unit
About BYD e3 Parts
The BYD e3 is a compact four-door electric saloon, launched in China on 24 October 2019 as the saloon sister of the e2 hatchback. Both are built on BYD's e-platform and share a 2,610 mm wheelbase, but the e3 is 4,450 mm long, 210 mm longer than the e2, to make room for a 560-litre boot. A single motor drives the front wheels through a single-speed reduction gear, rated at 70 kW or 100 kW depending on trim. The battery is a ternary lithium pack of 35.2 kWh or 47.3 kWh, or a lithium iron phosphate pack on later cars: 43.2 kWh on the 2021 fleet trims and 38 kWh (Blade battery) on the e3 driving-school edition launched in May 2021. With no engine to service, the car needs brakes, suspension, body and cabin parts, plus the battery, motor and charging hardware of an electric car. Many e3s have worked as ride-hailing cars. Every part here is listed by OE number, and the number on the old part is the surest fitment check.
What to know before buying BYD e3 parts
Start by making sure the car is an e3 and not its sister, the e2. The two share BYD's e-platform, a 2,610 mm wheelbase and a 1,760 mm width, and they look alike from the front. The e3 is the saloon, 4,450 mm long against 4,240 mm for the e2, with a boot lid over a 560-litre boot where the e2 has a tailgate. The rear bumper, rear lamps, rear screen, boot lid and boot trim are therefore specific to the e3. Some front-end and running gear parts may be shared between the two cars, but only a matching OE number proves it.
The trim matters more than the year. The private trims, Zhi Comfort, Yao Luxury and Chuang Premium, and the 2021 Upgraded Luxury and Premium, use a 70 kW motor, a ternary lithium battery and LED headlamps. The ride-hailing trims, the 300 and 400 Chuxing Editions from 2020 and the Chuxing and Lingchang Editions of 2021, use a 100 kW motor. The 2021 fleet cars also changed to a 43.2 kWh lithium iron phosphate battery and to halogen headlamps, so the newest fleet e3 has the simpler lamp. The motor and battery give no outward sign of which is fitted, so read the OE number on the motor, pack or lamp you are replacing.
The rear brakes need a check of their own. The 2020 300 Chuxing Edition is the only e3 with a pull-up handbrake, while every other trim has an electric parking brake. Look between the front seats for a lever or a switch before ordering a rear caliper or any parking brake part, and order to match what is fitted.
Much of the car is the same on every trim. All run 205/60 R16 tyres on alloy wheels, MacPherson struts at the front and a torsion beam at the rear, with ventilated front discs, rear discs, ABS, EBD and ESP. None carries a spare wheel. That makes front brakes, springs and dampers the most straightforward parts to order, though the OE number is still the check.
Finally, think about how the car has been used. Many e3s have worked as ride-hailing cars, and doors, window regulators, front suspension and brakes wear faster on a car that carries passengers all day. For painted panels, order by the colour code on the car rather than by colour name. If the trim is unclear, the build date on the identification plate shows which model year the car belongs to, and that narrows down the battery and headlamps it left the factory with.
Before You Order: 7 Checks
- Confirm the car is an e3 saloon and not an e2 hatchback. The e3 has a boot lid and is 4,450 mm long, so order rear body parts for the saloon.
- Match the OE number on the part you are replacing to the OE number on the listing before you order.
- Look for a handbrake lever between the front seats before ordering a rear caliper, and order the caliper that suits the parking brake fitted.
- Check whether the headlamps are LED or halogen before ordering a lamp, since the 2021 fleet trims have halogen, and order to match the lamp fitted.
- Read the label on the battery or the old part before ordering battery parts, since both ternary and lithium iron phosphate packs were used, and order by OE number.
- Read the build date on the identification plate if the trim is unclear, and use it to confirm the model year before ordering battery or lamp parts.
- Order painted panels by the colour code on the car rather than by colour name.
Generations and Facelifts
The e3 is the saloon version of the e2 hatchback. The e2 was unveiled at Auto Shanghai in April 2019, and both cars were built on BYD's then new e-platform. The e3 went on sale on 24 October 2019 as a 2020 model-year car, in three trims: Zhi Comfort with a 35.2 kWh battery and 305 km of NEDC range, and Yao Luxury and Chuang Premium with a 47.3 kWh battery and 405 km. All three used a 70 kW motor, a ternary lithium battery, LED headlamps and an electric parking brake.
The 2020 line-up later added two ride-hailing trims, the 300 and 400 Chuxing Editions, with a 100 kW motor in place of the 70 kW unit. The 300 Chuxing Edition is the one e3 with a pull-up handbrake, so its rear brake hardware differs from every other trim.
The 2021 model year split the range in two. The Upgraded Luxury and Premium trims kept the 70 kW motor, the 47.3 kWh ternary battery and LED headlamps. The fleet Chuxing and Lingchang Editions kept the 100 kW motor but moved to a 43.2 kWh lithium iron phosphate battery, with 401 km of NEDC range, and changed to halogen headlamps. The newest fleet cars therefore carry halogen lamps where older cars carry LED.
The body has kept its original shape throughout, and the sources show no facelift for the e3. The e2 hatchback was updated for 2023, but those changes do not apply to the saloon. Before ordering battery parts, headlamps or rear brake parts, check the build date on the identification plate and the trim, then match each part by OE number.
BYD e3 Parts: Frequently Asked Questions
How do I make sure a part fits my BYD e3?
Match the OE number. Every part on this site is listed under the OE number printed on the original part, and if the number on the part you are replacing matches the listing, the part fits. That check matters on the e3 because the motor, battery, headlamps and rear brakes all changed between trims, while the body looks the same. If the old part is missing or its number cannot be read, send a photo through the quote form and we will reply within 24 hours, usually sooner.
Will e2 parts fit my e3?
Some may, but check each one. The e2 hatchback and the e3 saloon share the e-platform, the 2,610 mm wheelbase and the 1,760 mm width, so some running gear and front-end parts can be common. The rear is where they differ. The e3 is 210 mm longer at 4,450 mm, with a boot lid in place of a tailgate, its own rear bumper, rear lamps and rear screen, and a 560-litre boot. Do not assume a part carries across because it looks right. Compare the OE number on the old part with the listing.
Which battery does my e3 have?
It depends on the trim and model year. The 2020 private trims used a ternary lithium battery, 35.2 kWh on the 305 km Zhi Comfort and 47.3 kWh on the 405 km trims, and the 2021 Upgraded trims kept the 47.3 kWh ternary pack. The 2021 Chuxing and Lingchang fleet trims moved to a 43.2 kWh lithium iron phosphate battery. Nothing on the outside of the car shows which is fitted. Read the label on the pack or the old part, and order battery parts by OE number.
My e3 has a handbrake lever, but the listing says electric parking brake. Which is right?
Both can be right, because the trim decides. The 2020 300 Chuxing Edition, a ride-hailing trim, is the one e3 with a pull-up handbrake. Every other trim, private or fleet, uses an electric parking brake instead, so the rear brake hardware differs between them. Look between the front seats. A lever means the cable type and a switch means the electric type. Then order the rear caliper, and any cable or parking brake part, by the OE number on the old part.
Are the e3's headlamps LED or halogen?
It depends on the trim, and the newer fleet cars have the simpler lamp. The 2020 private trims, the 2020 Chuxing Editions and the 2021 Upgraded trims all have LED headlamps. The 2021 Chuxing and Lingchang fleet trims have halogen headlamps instead. A later build date therefore does not mean an LED lamp. Look at the lamp fitted, or at the OE number on its housing, before ordering a headlamp or a bulb, and order to match what the car has.
Does it matter whether my e3 has the 70 kW or the 100 kW motor?
It does for drive parts. The private trims use a 70 kW motor and the Chuxing and Lingchang ride-hailing trims use a 100 kW motor. Both are permanent magnet synchronous units with 180 Nm of torque, driving the front wheels through a single-speed reduction gear. Because both outputs sit in the same body, the car's appearance does not tell you which is fitted. If you are replacing the motor, reduction gear or motor controller, read the OE number on the old unit and match it to the listing.
Does the e3 have a spare wheel?
No. No e3 trim carries a spare wheel. The space goes to a 560-litre boot, which is the main reason the saloon is 210 mm longer than the e2 hatchback. The boot lid, boot seal and boot trim are specific to the e3 and do not come from the e2, which has a tailgate. If the car needs puncture cover, plan for a repair kit. Order any boot lid, seal or trim part by the OE number on the part you are replacing.
What tyre size does the e3 use?
Every trim in the sources uses 205/60 R16 tyres on alloy wheels, so there is no size split across the range. The car was launched with tyre pressure monitoring, so a new wheel may also need a pressure sensor moved across or replaced. Read the size on the sidewall to confirm nothing has changed since the car left the factory. Then order tyres in that size, and any wheel or pressure sensor by the OE number on the old part.
What are the Chuxing and Lingchang Editions?
They are the ride-hailing versions of the e3. The 2020 line-up later added the 300 and 400 Chuxing Editions, with a 100 kW motor and LED headlamps, and the 300 is the one trim with a pull-up handbrake. For 2021 the Chuxing and Lingchang Editions moved to a 43.2 kWh lithium iron phosphate battery and halogen headlamps. Many e3s on the road started life in one of these trims. If you are unsure which your car is, check the build date on the identification plate and match parts by OE number.
My e3 was a ride-hailing car. What wears out first?
A car that has carried passengers all day wears its doors, hinges, check straps and window regulators faster than a private car, along with the front struts, top mounts and brake pads. Regenerative braking takes some load off the friction brakes, but discs can still corrode on a car that sits between shifts. Start with the part making the noise or showing the fault. Then match its replacement by the OE number on the old part rather than ordering by mileage.
Has the e3 had a facelift?
The sources show no facelift for the e3. The body has kept its original shape since the car went on sale on 24 October 2019, and the changes since then have been to trims. Fleet editions arrived for 2020, and for 2021 the fleet cars gained a lithium iron phosphate battery and halogen headlamps. The e2 hatchback was updated for 2023, and those changes do not apply to the e3. For battery, lamp and rear brake parts, check the build date on the identification plate and match by OE number.
What brakes and suspension does the e3 use?
The e3 uses MacPherson strut front suspension and a torsion beam rear axle, with ventilated discs at the front, discs at the rear, and ABS, EBD, brake assist and ESP. The layout is the same across the range, so the front brakes and suspension are the parts least likely to vary by trim. The exception is the rear caliper on the 2020 300 Chuxing Edition, which works with a handbrake cable. Match each brake or suspension part by the OE number on the part you are removing.