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Service bulletin 2028808/8

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11016362
Published by NHTSA2025-04-02
Manufacturer's number2028808/8
Manufacturer's date2025-03-03
NHTSA componentENGINE

NHTSA's summary

Service info: Engine oil - Specific oil type and oil consumption reference. Condition: Engine oil level requires top up between services Technical Background: The use of the correct oil for each engine type is critical for its continued performance, reliability and ultimately warranty. The workshop manual should always be the first point of reference, ensuring the correct lubricant is used for each specific model year and engine type Should oil be required the parts catalogue must be referred to ensuring the correct VIN is always used when ordering

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
BENTLEY BENTAYGA2017, 2018, 2019, 2020, 2021, 2022, 2023
BENTLEY BENTAYGA2025
BENTLEY BENTAYGA HYBRID2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
BENTLEY CONTINENTAL GT2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
BENTLEY CONTINENTAL GT CABRIO2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it)
BENTLEY FLYING SPUR2012 to 2013
BENTLEY FLYING SPUR2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
BENTLEY FLYING SPUR HYBRID2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
BENTLEY MULSANNE2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
BENTLEY redundant BENTAYGA2024
BENTLEY redundant FLYING SPUR HYBRID2025

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
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2061369/142026-09-09. Service bulletin. Engine Overheating - Warning in the DIP | V8 Kovomo. Customer statement / workshop findings: One or a combination of the following symptoms are evident • Engine overheat warning in the DIP (Engine overheating) • Unusual cooling fan operation at high temperatures • P19F700: Low engine coolant temperature indicator lamp coolant too warm • Signs of coolant in the vacuum hoses for switch valve N649
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2051187/132026-08-05. Service bulletin. Poor Engine Running Complaints (Misfires) Petrol Engines Only. Customer statement / workshop findings: • Poor engine running • Reduced power • Engine warning lamp illuminated • Symptom related DTC’s evident within the applicable engine control unit(s)
2068273/62026-08-03. Service bulletin. Multiple random misfires evident during PDI.
2065664/62026-08-01. Service bulletin. Bentayga V8 Kovomo - Engine MIL light on - DTC “O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2. Customer statement / workshop findings: DTC P004100: “O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 is evident within address 0001 (Engine control unit) and MIL light active after attempting to conduct a readiness test
2081236/22026-08-01. Service bulletin. Loss of Cabin Heat During Engine Operation | Bentayga - V8. Customer Statement: Customers may report that the air conditioning system blows only cold air when the engine is running. Warm air is only available after switching off the engine. The concern is commonly reported after engine removal or recent repair work.
2071190/42026-08-01. Service bulletin. HVAC failing to cool | DTC B16A1F0 in diagnostic address 00C5 | Bentayga Series (Hybrid).