Quick answer: Engine Oil & Filter Change on a 2013–2019 Mercedes-Benz B-Class is rated Moderate and takes about 30-60 minutes. You'll need 3 tools for this job, and parts cost about $57. This guide walks you through the full job step by step, including the mistakes to avoid.
Oil spec
2.0L M270 turbo
Capacity 6.1 qt with filter Viscosity 0W-40 (alt: 5W-40)
| Part Name |
Part Number |
Price |
Buy |
| Engine Oil (0W-40) |
— |
$45.00 |
|
| Correct engine oil filter and drain-plug washer for 2013-2019 Mercedes-Benz B-Class |
— |
$12.00 |
|
About prices: shown prices are typical retail averages and change frequently; cheaper alternatives may be available. Confirm the current price before buying.
💡 Pro tip: Order all parts at once to save on shipping
Step-by-Step Instructions
Follow these steps carefully
1
Confirm oil specification and make the vehicle safe
The 2.0T M270 in the 2012-2018 B-Class takes about 5.8 litres, roughly 6.1 US quarts, of 0W-40 meeting Mercedes spec 229.5; confirm your exact viscosity against the owner's manual or the underhood sticker. The filter is a cartridge in a top-mounted housing, opened with a 27mm socket or a Mercedes cartridge cap wrench. Have a drain pan, a funnel, and a new drain-plug washer. Park on level ground, set the parking brake, and chock the wheels. Mercedes spec 229.5 is the key line on the bottle, and the 0W-40 grade is worth double-checking against the owner's manual since some markets spec differently.
🔧 Mechanic's note — Ray Delgado
The B-Class M270's 5.8-liter figure varies by market, so I check the underhood sticker every time rather than trusting memory. The cartridge lives up top, which at least makes the filter half of this job civilized.
2
Warm briefly and protect the work area
Warm the engine briefly, then shut it off and let it sit a few minutes. Lift the front onto ramps or rated jack stands and remove the engine under-shield to expose the sump.
3
Drain the used oil and replace the filter
Remove the drain plug from underneath and let the oil drain fully into the pan. From above, unscrew the filter housing cap with the 27mm socket, lift it out with the old cartridge, and pull the element off the cap. Fit the new cartridge onto the cap so it seats fully, and fit the new O-ring from the filter box into the cap groove with a light coat of fresh oil. Thread the cap back on by hand so the plastic threads start straight, then snug it, never force it. Start the plastic cap by hand and turn it backwards half a turn until you feel the threads drop in, cross-threading it is an expensive mistake.
🔧 Mechanic's note — Ray Delgado
I thread that 27mm cap backwards half a turn until I feel the threads click in, then tighten by hand — it's the oldest trick for plastic housings, and the only way I'll put a cap on a Mercedes threads-first.
4
Install the correct oil quantity
Pour in about 5.8 litres of 0W-40 through a funnel, adding the last half litre slowly and checking the dipstick so the level lands on the full mark without overfilling.
🔧 Mechanic's note — Ray Delgado
I pour five liters, then slow way down — the last half liter goes in splashes with dipstick checks between. On this M270, creeping up on the full mark is the whole job; overshooting means a messy siphon-out.
5
Check level, leaks, and service reminder
Start the engine and idle briefly, checking for leaks at the drain plug and the filter housing, then shut it off. Refit the under-shield with all its fasteners. Recheck the oil level after a few minutes on level ground, record the date and mileage, and reset the service indicator through the instrument cluster so the countdown restarts.
All Done!
Test your repair before closing everything up. If something doesn't work right, double-check your steps.
⚠️ Common Mistakes to Avoid
- • Using the wrong viscosity, capacity, or filter
- • Working under a vehicle supported only by a jack
- • Reusing a crushed drain-plug washer or leaving the old filter gasket stuck
- • Over-tightening the filter or drain plug
- • Starting the engine without first verifying oil was added
