Engine oil capacity
6.3 L
- Oil change with filter
Mercedes-Benz SLK300 R1722.0 litre · 180 kW
Jul 2015 onward · Convertible · Petrol · 172.438
Oil, coolant and a checklist for your next service.
Oil & coolant
Coolant capacity
9.5 L
- Engine cooling system
- Service refill
- 1.9 L · Low-temperature cooling circuit · Service refill
Engine oil specification
MB 229.5
Coolant specification
MB 325.6 or MB 326.6
- MB 325.6: concentrate, dilute before use
- MB 326.6: premixed, do not add water
Do not mix different coolant types. Let the cooling system cool before opening the reservoir. Check the level after filling. The capacity shown is not a top-up amount.
Engine & gearbox
Engine code
M 274.920
- 1,991 cc · 4 cylinders · 16 valves
- Turbocharged · direct injection
- Bore × stroke 83 × 92 mm
- Compression 9.8:1
Drive
Rear-wheel drive
Rear axle oil
MB 235.0 or MB 235.6
Brake fluid
DOT 4
Fluid capacities for Australian models
| Australian model | Automatic gearbox | Power steering | Brake fluid |
|---|---|---|---|
| SLK300 (172), 2.0 Litre DOHC Eng., 9-Spd. Auto. (2015-2021) | 10 L (dry fill) | 1 L (refill) | 0.5 L (refill) |
From the FUCHS lubricant guide for Australian models. A dry fill is the quantity for an empty unit; a fluid change takes less. A refill is the quantity for a normal fluid change.
When to service & replace parts
For jobs with both a time and a kilometre limit, use whichever comes first.
Replacement intervals
| Part or fluid | When to replace it |
|---|---|
| Engine oil and oil filter | At each Service A and Service B |
| Engine air filter | More than 80,000 km (50,000 mi) or 4 years since last change |
| Spark plugs | More than 75,000 km (46,500 mi) or 3 years since last change |
Replace according to wear
Brake pads, discs, tyres and wipers do not share a fixed replacement mileage.
Brake pads and discs
Check pad thickness and disc condition. Replace when they reach the wear limit.
Wiper blades
Replace blades that leave streaks, skip across the glass or have damaged rubber.
Tyres
Check tread, damage and cracking, and correct the pressures.
Service checklist
Service A and Service B alternate, normally once a year. Follow the time or kilometres remaining on your dashboard, whichever comes first. Extra work can fall due with either service.
Service A
When Service A is due on the dashboard
Replace
Check & maintain
Service B
When Service B is due on the dashboard
Replace
Check & maintain
Tick off jobs as you go. Your ticks are saved on this device.
Brake discs
| Axle | Disc size | Type | Minimum thickness | Applies to |
|---|---|---|---|---|
| Front | 322 × 32 mm | Vented | 29.4 mm | Without sports package |
| Front | 344 × 32 mm | Vented | 30 mm | With sports package |
| Rear | 300 × 10 mm | Solid | 8.3 mm | All versions |
Size is diameter × thickness. Replace a disc before it wears to its minimum thickness, which is also marked on the disc itself. Where two sizes are listed for one axle, the car's equipment decides which it has: measure the disc to be sure.
Wheels & tyres
Stud pattern
5 × 112
- Number of bolts × circle diameter (mm)
Wheel bolts
M14 × 1.5
- 17 mm hex head
Factory wheel and tyre sizes
| Wheel | Tyre size | Rim | Fitted to |
|---|---|---|---|
| 16-inch | 205/55 R16Mercedes-approved (MO) tyres listed | 7.0J × 16, offset ET38 | Front and rear |
| 16-inch | 205/55 R16Mercedes-approved (MO) tyres listed | 7.0J × 16, offset ET37.5 | Front and rear |
| 16-inch | 225/50 R16Mercedes-approved (MO) tyres listed | 7.5J × 16, offset ET45.5 | Rear |
| 17-inch | 225/45 R17Mercedes-approved (MO) tyres listed | 7.5J × 17, offset ET42 | Front and rear |
| 17-inch | 245/40 R17Mercedes-approved (MO) tyres listed | 8.5J × 17, offset ET36 | Rear |
| 18-inch | 225/40 R18 | 7.5J × 18, offset ET42 | Front and rear |
| 18-inch | 225/40 R18Mercedes-approved (MO) tyres listed | 8.0J × 18, offset ET43 | Front |
| 18-inch | 245/35 R18 | 9.0J × 18, offset ET42 | Rear |
| 18-inch | 245/35 R18 | 8.5J × 18, offset ET36 | Rear |
Sizes the parts catalogue lists for this car. A "Rear" row is the wider rear tyre on cars with different sizes front and rear. Your tyre placard, on the driver's door pillar, gives the sizes and pressures for the wheels your car was built with.
Bulbs
| Light | Bulb | Applies to |
|---|---|---|
| Headlight (low beam) | H7 · 55 W | Halogen |
| Headlight (low beam) | D1S xenon · 35 W | Bi-Xenon |
| High beam | H7 · 55 W | Halogen |
| High beam | D1S xenon · 35 W | Bi-Xenon |
| Front fog light | H11 · 55 W | — |
| Indicator, front | PY21W · 21 W | — |
| Parking / position light | W5W · 5 W | Halogen |
| Reverse light | W16W · 16 W | — |
| Rear fog light | H21W · 21 W | — |
| Interior light | W5W · 5 W | — |
Check the bulb you take out before buying a new one. Halogen, xenon and LED headlights use different bulbs, and LED lights usually have no bulb to replace.
Battery
| Case size (L × W × H) | Capacity | Cold cranking | Share of listings |
|---|---|---|---|
| 315 × 175 × 190 mm | 80 Ah | 800 A (EN) | 76% |
The main battery sizes listed for this car, most common first. The right one depends on the car's equipment, such as start-stop, so match the size, capacity and type printed on the battery you are replacing.
Spark plugs
Number
4
Thread
M12 × 1.25
Electrode gap
0.7 mm
Tightening torque
23 Nm
Engine, gearbox, brake, wheel, tyre, bulb, battery and plug details are taken from the parts makers' listings for this exact vehicle. Where those listings disagree, only the clear majority is shown.
Parts for this car
25 in stockEvery part we stock that is listed to fit the SLK300 R172 2.0 litre · 180 kW. Build date and factory options can still affect fitment, so check the fitment table on a part before you order.
Brakes4 parts
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In stock$15.00
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Low stock$180.00
-
In stock$145.00
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Low stock$249.00
Filters1 part
-
In stock$28.00
Wipers2 parts
-
Low stock$38.00
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Low stock$48.00
Engine & cooling8 parts
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In stock$29.00
-
In stock$11.20
-
In stock$42.00
-
In stock$108.00
-
In stock$132.00
-
In stock$8.90
-
In stock$28.00
-
Low stock$221.00
Suspension & steering7 parts
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In stock$55.00
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Low stock$104.00
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Low stock$85.00
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Low stock$85.00
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In stock$10.40
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In stock$13.40
-
In stock$11.10
Electrical1 part
-
In stock$66.00
Body & interior2 parts
-
In stock$4.10
-
In stock$101.00
Keep a record of this service
Print the specifications and checklist with your registration, VIN, mileage and the products you used.