The Mercedes-Benz CLA 45 AMG has been produced from 2014 to present with two distinct engine generations. Using the correct oil capacity, viscosity, and type is essential for maintaining performance and longevity. This guide lists all model years with full oil specifications and maintenance recommendations.
The first generation (2014-2019) uses the M133 engine requiring MB 229.5 approved 5W-40 oil, while the second generation (2020-2025) features the M139 engine requiring 0W-20 viscosity.
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2025 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M139) |
| Oil Capacity (with Filter) | 6.0 qt (5.7 L) |
| Oil Capacity (without Filter) | 5.5 qt (5.2 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-20 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, OEM 1761800800 |
The 2025 Mercedes-Benz CLA 45 AMG uses a 2.0L turbocharged M139 engine that requires 6.0 quarts of full synthetic oil. Using SAE 0W-20 oil provides the right balance of protection and efficiency under normal driving conditions.
2024 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M139) |
| Oil Capacity (with Filter) | 6.0 qt (5.7 L) |
| Oil Capacity (without Filter) | 5.5 qt (5.2 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-20 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, OEM 1761800800 |
The 2024 Mercedes-Benz CLA 45 AMG received a mild refresh and continues to use the M139 engine requiring 6.0 quarts of 0W-20 full synthetic oil. This specification ensures optimal engine protection for the high-performance turbocharged four-cylinder engine.
2023 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M139) |
| Oil Capacity (with Filter) | 6.0 qt (5.7 L) |
| Oil Capacity (without Filter) | 5.5 qt (5.2 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-20 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, OEM 1761800800 |
The 2023 Mercedes-Benz CLA 45 AMG uses a 2.0L M139 turbocharged engine producing 387 horsepower that requires 6.0 quarts of 0W-20 full synthetic oil. The CLA 45 S variant produces 421 horsepower with identical oil specifications.
2022 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M139) |
| Oil Capacity (with Filter) | 6.0 qt (5.7 L) |
| Oil Capacity (without Filter) | 5.5 qt (5.2 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-20 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, OEM 1761800800 |
The 2022 Mercedes-Benz CLA 45 AMG requires 6.0 quarts of SAE 0W-20 full synthetic oil with filter replacement. The lower viscosity 0W-20 oil improves cold start performance and fuel efficiency while maintaining engine protection.
2021 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M139) |
| Oil Capacity (with Filter) | 6.0 qt (5.7 L) |
| Oil Capacity (without Filter) | 5.5 qt (5.2 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-20 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, OEM 1761800800 |
The 2021 Mercedes-Benz CLA 45 AMG uses the M139 engine requiring 6.0 quarts of 0W-20 full synthetic oil. This generation marked the transition to the more advanced M139 engine platform with updated oil specifications.
2020 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M139) |
| Oil Capacity (with Filter) | 6.0 qt (5.7 L) |
| Oil Capacity (without Filter) | 5.5 qt (5.2 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 0W-20 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, OEM 1761800800 |
The 2020 Mercedes-Benz CLA 45 AMG introduced the second generation with the new M139 engine requiring 6.0 quarts of 0W-20 full synthetic oil. This engine marked a significant departure from the previous generation’s oil specifications.
2019 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M133) |
| Oil Capacity (with Filter) | 5.8 qt (5.5 L) |
| Oil Capacity (without Filter) | 5.3 qt (5.0 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, Mahle OX 774D |
The 2019 Mercedes-Benz CLA 45 AMG uses the M133 engine requiring 5.8 quarts of MB 229.5 approved 5W-40 full synthetic oil. This was the final model year for the first generation platform.
2018 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M133) |
| Oil Capacity (with Filter) | 5.8 qt (5.5 L) |
| Oil Capacity (without Filter) | 5.3 qt (5.0 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, Mahle OX 774D |
The 2018 Mercedes-Benz CLA 45 AMG requires 5.8 quarts of MB 229.5 approved 5W-40 full synthetic oil. The M133 engine in this model year produces 355 horsepower with proper oil maintenance.
2017 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M133) |
| Oil Capacity (with Filter) | 5.8 qt (5.5 L) |
| Oil Capacity (without Filter) | 5.3 qt (5.0 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, Mahle OX 774D |
The 2017 Mercedes-Benz CLA 45 AMG uses a 2.0L M133 turbocharged engine that requires 5.8 quarts of 5W-40 full synthetic oil. Using MB 229.5 approved oil ensures proper engine protection and extended service intervals.
2016 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M133) |
| Oil Capacity (with Filter) | 5.8 qt (5.5 L) |
| Oil Capacity (without Filter) | 5.3 qt (5.0 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, Mahle OX 774D |
The 2016 Mercedes-Benz CLA 45 AMG requires 5.8 quarts of MB 229.5 approved 5W-40 full synthetic oil with filter replacement. This viscosity provides optimal protection for the high-performance turbocharged engine.
2015 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M133) |
| Oil Capacity (with Filter) | 5.8 qt (5.5 L) |
| Oil Capacity (without Filter) | 5.3 qt (5.0 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, Mahle OX 774D |
The 2015 Mercedes-Benz CLA 45 AMG uses the M133 engine requiring 5.8 quarts of 5W-40 full synthetic oil meeting MB 229.5 specifications. Proper oil maintenance ensures the turbocharged engine delivers 355 horsepower reliably.
2014 Mercedes-Benz CLA 45 AMG Engine Oil Capacity
| Specification | Detail |
|---|---|
| Engine | 2.0L Turbo I4 (M133) |
| Oil Capacity (with Filter) | 5.8 qt (5.5 L) |
| Oil Capacity (without Filter) | 5.3 qt (5.0 L) |
| Recommended Oil Type | Full Synthetic |
| Viscosity | SAE 5W-40 |
| Oil Change Interval | Every 10,000 miles or 12 months |
| Oil Drain Plug Torque | 22 lb-ft (30 Nm) |
| Recommended Filters | Mann HU 7025z, Mahle OX 774D |
The 2014 Mercedes-Benz CLA 45 AMG was the first model year requiring 5.8 quarts of MB 229.5 approved 5W-40 full synthetic oil. This inaugural year established the oil specifications that would carry through the first generation.
Oil Maintenance and Service Tips
Checking Oil Level
Check oil level when the engine is cold and on level ground. Allow at least five minutes after shutdown for accurate readings. The dipstick should show oil between the minimum and maximum marks.
Oil Change Best Practices
Replace the oil filter with every oil change to ensure proper filtration. Always use Mercedes-Benz approved oil meeting the correct MB specification for your model year. Torque the drain plug to 22 lb-ft (30 Nm) and the oil filter cap to 18 lb-ft (25 Nm) to prevent leaks.
Service Intervals
| Driving Condition | Oil Change Interval |
|---|---|
| Normal Driving | Every 10,000 miles or 12 months |
| Severe Driving | Every 5,000-7,500 miles or 6 months |
Severe driving conditions include frequent short trips, extreme temperatures, dusty environments, and track use. Earlier oil change intervals help minimize long-term engine repair costs under these conditions.
When exploring Mercedes-Benz, don’t miss our detailed guides on popular models like the Mercedes-Benz CLS 450, Mercedes-Benz CLS 550, Mercedes-Benz E 350, and Mercedes-Benz E 400. Understanding engine oil capacity is crucial for proper maintenance, and our expert resources explain the exact oil requirements for these models. You’ll also find insights on recommended oil types, service intervals, and common issues linked to incorrect oil levels, ensuring your Mercedes-Benz always delivers reliable performance.
Frequently Asked Questions
What kind of oil does a Mercedes-Benz CLA 45 AMG use?
The Mercedes-Benz CLA 45 AMG uses full synthetic oil. Models from 2014-2019 require 5W-40 oil with MB 229.5 approval, while 2020 and newer models require 0W-20 viscosity.
How much oil does a Mercedes-Benz CLA 45 AMG take?
The Mercedes-Benz CLA 45 AMG takes 5.8 quarts (5.5 liters) for 2014-2019 models and 6.0 quarts (5.7 liters) for 2020-2025 models with filter replacement. Capacity without filter is approximately 0.5 quarts less.
What is the recommended oil type for a Mercedes-Benz CLA 45 AMG?
Full synthetic oil is required for all Mercedes-Benz CLA 45 AMG models. First generation models (2014-2019) need MB 229.5 approved 5W-40, while second generation models (2020-2025) need 0W-20.
What is the oil change interval for a Mercedes-Benz CLA 45 AMG?
The recommended oil change interval is every 10,000 miles or 12 months under normal driving conditions. For severe driving conditions including track use, change oil every 5,000-7,500 miles or 6 months.
Can I use 0W-40 instead of 5W-40 in my CLA 45 AMG?
For 2014-2019 models, you can use 0W-40 oil as long as it meets MB 229.5 specifications. Both 0W-40 and 5W-40 viscosities are approved under this standard and provide proper engine protection.
What oil filter does the Mercedes-Benz CLA 45 AMG use?
The Mercedes-Benz CLA 45 AMG uses Mann HU 7025z or Mahle OX 774D filters for 2014-2019 models. Models from 2020-2025 use OEM part number 1761800800.
Conclusion
The Mercedes-Benz CLA 45 AMG requires specific oil specifications that vary by generation. First generation models (2014-2019) need 5.8 quarts of MB 229.5 approved 5W-40 full synthetic oil, while second generation models (2020-2025) require 6.0 quarts of 0W-20 full synthetic oil. Using manufacturer-approved oil and following recommended service intervals protects the turbocharged engine and maintains performance. Regular oil changes with quality filters ensure reliability and longevity for your high-performance AMG vehicle.
