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2021 BMW M235i xDrive Gran Coupe oil capacity, type & filter

The 2021 BMW M235i xDrive Gran Coupe takes 5.5 qt of 0W-20 oil.

Applies to checked engine: 2.0L 4-Cyl Turbo.

Capacity 5.5 qt Verified fit Buy at least 6 qt total; listed capacity is 5.5 qt (Service fill).
Oil type 0W-20
LL-17 FE+
Verified fit
Oil Filters
Purolator Shown first PL21756 Search PL21756

Confirm Purolator PL21756 in the retailer selector before checkout.

i Based on 1 checked source: Purolator Part Finder. Additional cross-check is still pending: another filter catalog cross-check and alternate part-number support. Use it as a reference, then confirm the exact filter part number at checkout. See how we verify. Learn how we verify fitment

4 sources checked Last checked: 2026-06-27 How we verify →

Where to Buy View Data Sources
Buy oil & filters:
Walmart → AutoZone → Amazon → O'Reilly →
Full synthetic options for 0W-20
Mobil 1 Extended Performance 0W-20 → Castrol Edge 0W-20 → Pennzoil Platinum 0W-20 →

Search paths only — confirm your OEM viscosity spec and quantity before checkout.

2021 BMW M235i xDrive Gran Coupe oil specs: capacity conditions and filter notes

Capacity condition

With filter means the volume includes a new filter. Service fill is the typical drain-and-fill amount. Dry fill is for a fresh empty engine only.

Verify before checkout

Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.

Source coverage for the 2021 BMW M235i xDrive Gran Coupe

Capacity sources

Supported by Pennzoil OATS and Castrol (Olyslager).

Oil type sources

Supported by Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager).

Filter sources

Supported by Purolator Part Finder.

Source coverage

4 checked source rows for the 2021 BMW M235i xDrive Gran Coupe.

Before ordering for this 2021 BMW M235i xDrive Gran Coupe

Checkout verification checklist
2.0L 4-Cyl Turbo Verified fit Buy →
Capacity
5.5 qt (Service fill)
Oil type
0W-20
Interval
10,000 mi / 12 mo
Filter
Purolator PL21756

Source check: Last checked 2026-06-27 from AMSOIL Lookup, Pennzoil OATS, Purolator Part Finder, and Castrol (Olyslager).

BMW M235i xDrive Gran Coupe oil specs by year

This table includes checked BMW M235i xDrive Gran Coupe model years available in our database.

Year Capacity Oil type Filter
2024 5.5 qt 0W-20 AMSOIL 51456090
2023 5.5 qt 0W-20 Purolator PL21756
2022 5.5 qt 0W-20 Purolator PL21756
2021 Current page 5.5 qt 0W-20 Purolator PL21756
2020 5.5 qt 0W-20 Purolator PL21756

How we verified 2021 BMW M235i xDrive Gran Coupe oil data

How we verify fitment

Checked fitment data. Last checked: 2026-06-27.

This page checked 4 sources for the 2021 BMW M235i xDrive Gran Coupe. The table lists which checked source contributed capacity, oil type, or filter evidence.

We checked leading oil brands and aftermarket filter catalogs so you don't have to.

Confidence
Cross-check pending i Some oil fields are based on checked source data but still need stronger cross-check evidence. Review area: 2.0L 4-Cyl Turbo oil filter. Use the listed values as references and confirm the exact engine before ordering or adding oil. See how we verify. Learn how we verify fitment
Sources checked
4
Last checked
2026-06-27
Field-level source support
  • Capacity: Pennzoil OATS and Castrol (Olyslager)
  • Oil type: Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager)
  • Filter: Purolator Part Finder
  • Change interval: Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager)
Source Supports Checked Link
AMSOIL Lookup Oil type 2026-06-27 Visit brand site
Pennzoil OATS Capacity, Oil type 2026-06-27 Visit brand site
Purolator Part Finder Filter 2026-06-27 Visit brand site
Castrol (Olyslager) Capacity, Oil type 2026-06-27 Visit brand site

2021 BMW M235i xDrive Gran Coupe oil FAQ

Is the oil capacity measured with or without the filter?

Capacity condition matters. With filter includes a new filter. Service fill is the typical drain-and-fill amount. Dry fill is for a fresh empty engine only.

Why should I confirm before buying?

Retailer catalogs can update separately. Confirm the exact 2021 BMW M235i xDrive Gran Coupe selector at checkout before you buy.

Do I also need to match the OEM oil approval?

Yes. Viscosity is only one part of the oil spec. Match the oil approval listed in your owner's manual or on the bottle before checkout.

How often should I change the oil on a 2021 BMW M235i xDrive Gran Coupe?

Castrol's service data indicates a 10,000 mi / 12 mo change interval for the 2021 BMW M235i xDrive Gran Coupe. Always follow your owner's manual and oil-life monitor. Severe service may require a shorter interval.

Do I need a new drain plug gasket?

Replace it when your vehicle uses a serviceable gasket or crush washer. Confirm the gasket size and drain plug torque from the service manual or parts counter.

2021 BMW M235i xDrive Gran Coupe maintenance checklist

One part checked. Look up the rest while you're here.

Where to buy

These are retailer search paths for your vehicle. The specs above are checked — use the retailer's vehicle selector at checkout to confirm before ordering.

This section may include affiliate or sponsored retailer links. They are purchase paths, not fitment evidence.

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Other 2021 BMW M235i xDrive Gran Coupe lookups: Cabin air filter · Engine air filter