Selecting the right battery for your Mercedes-Benz CLA I (C117) produced from 2013 onwards is a crucial decision that can impact the performance, reliability, and longevity of your vehicle. The CLA I, being a modern car with advanced electronics and often equipped with the Start-Stop system, requires a battery that can handle frequent engine starts, high electrical consumption, and the demands of various onboard systems. Understanding the specific requirements for your CLA model will ensure that you choose a battery which not only fits physically but also meets the electrical specifications necessary for optimal function.
The most significant consideration for the CLA I is the presence of the Start-Stop system. This technology is designed to improve fuel efficiency and reduce emissions by automatically shutting off the engine when the vehicle is stationary and restarting it when needed. However, this places a greater strain on the battery compared to traditional systems, as it requires the battery to deliver high cranking power repeatedly. For this reason, Mercedes-Benz CLA I models equipped with Start-Stop technology require AGM (Absorbent Glass Mat) batteries, which are specifically engineered to withstand deep discharges and frequent cycles without losing performance.
When it comes to battery capacity and performance, the requirements vary slightly depending on the engine variant. For instance, CLA 180, CLA 200, CLA 250, CLA 250 4-matic, and CLA 220 4-matic (all petrol engines) as well as the CLA 180 CDI (diesel) generally require an AGM battery with a minimum capacity of 70-72 Ah and a cold cranking amperage (CCA) in the range of 720-760 A. In contrast, more powerful engines like the CLA 45 AMG 4-matic, CLA 200 CDI, and CLA 220 CDI demand a higher capacity battery, typically in the range of 80-82 Ah with a CCA of 800 A. These specifications are set to ensure that the battery can handle both the energy-hungry Start-Stop system and the advanced electronics found in these models.
There are several suitable battery models that fit these requirements, though it’s important to note that the following are only examples of compatible batteries and not an exhaustive list. For most CLA models, batteries such as the Bosch S5A 08, Exide EK700, Exide EK720, Halfords AGM 096, Lucas LF096, or the Varta E39 are appropriate choices. For the higher-capacity requirements of the CLA 45 AMG and the diesel CLA 200 CDI and CLA 220 CDI, you might consider options like the Bosch S5A 11, Exide EK800, Exide EK820, Halfords AGM 115, Lucas LF115, or the Varta F21. These batteries are known for their reliability, robust construction, and the ability to deliver consistent performance under demanding conditions.
One interesting aspect of AGM batteries is that they use a special glass mat separator to hold the electrolyte, which makes them spill-proof and allows for installation in various positions. This technology also results in faster charging, improved vibration resistance, and a longer cycle life compared to traditional flooded lead-acid batteries. These advantages are particularly relevant for vehicles with Start-Stop systems, where the battery’s ability to recharge quickly and withstand constant cycling is essential.
When replacing your battery, it’s important to ensure that you match both the physical dimensions and the electrical specifications recommended for your specific CLA I variant. Installing a battery with lower capacity or CCA than recommended can lead to starting problems, reduced efficiency of the Start-Stop system, and potentially even damage to the vehicle’s electrical components. On the other hand, opting for a battery with slightly higher capacity or CCA is generally acceptable and can sometimes provide extra reliability, especially in colder climates or for vehicles with additional electrical accessories.
In summary, the ideal battery for the Mercedes-Benz CLA I (C117) 2013- is an AGM type that matches the vehicle’s Start-Stop technology and electrical demands. For most models, a 70-72 Ah AGM battery with 720-760 A CCA will suffice, while high-performance or diesel engines require an 80-82 Ah AGM with 800 A CCA. Always check compatibility before purchase, and remember that proper battery maintenance and timely replacement are key to keeping your CLA running smoothly for years to come. Interestingly, the move to AGM batteries is part of a broader trend in modern cars, as manufacturers strive to balance efficiency, environmental responsibility, and user convenience.
Mercedes-Benz CLA in version I (C117) is produced from 2013. Below we present the specifications of batteries suitable for specific engines.
Basic parameters of batteries suitable for Mercedes-Benz CLA (2013-):
| Layout | Terminal types | Base hold-down |
|---|---|---|
| 0 – positive on the right side | 1 | B13 |
Mercedes-Benz CLA I (C117) – petrol engines:
- CLA 180 – with Start-Stop
- CLA 200 – with Start-Stop
- CLA 220 4-matic – with Start-Stop
- CLA 250 – with Start-Stop
- CLA 250 4-matic – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 08 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK700 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK720 | 72 Ah 760 A | 278x175x190 mm | More |
| Halfords Standard AGM 096 | 70 Ah 720 A | 278x175x190 mm | More |
| Halfords Advanced AGM 096 | 70 Ah 760 A | 278x175x190 mm | More |
| Lucas Fusion AGM LF096 | 70 Ah 760 A | 278x175x190 mm | More |
| Varta Silver Dynamic AGM E39 | 70 Ah 760 A | 278x175x190 mm | More |
Mercedes-Benz CLA I (C117) – petrol engines:
- CLA 45 AMG 4-matic – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 11 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK800 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK820 | 82 Ah 800 A | 315x175x190 mm | More |
| Halfords Advanced AGM 115 | 80 Ah 800 A | 317x175x190 mm | More |
| Lucas Fusion AGM LF115 | 80 Ah 800 A | 315x175x190 mm | More |
| Varta Silver Dynamic AGM F21 | 80 Ah 800 A | 315x175x190 mm | More |
Mercedes-Benz CLA I (C117) – diesel engines:
- CLA 180 CDI – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 08 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK700 | 70 Ah 760 A | 278x175x190 mm | More |
| Exide AGM EK720 | 72 Ah 760 A | 278x175x190 mm | More |
| Halfords Standard AGM 096 | 70 Ah 720 A | 278x175x190 mm | More |
| Halfords Advanced AGM 096 | 70 Ah 760 A | 278x175x190 mm | More |
| Lucas Fusion AGM LF096 | 70 Ah 760 A | 278x175x190 mm | More |
| Varta Silver Dynamic AGM E39 | 70 Ah 760 A | 278x175x190 mm | More |
Mercedes-Benz CLA I (C117) – diesel engines:
- CLA 200 CDI – with Start-Stop
- CLA 220 CDI – with Start-Stop
| Model | Capacity and CCA | Dimensions (LxWxH) | Price |
|---|---|---|---|
| Bosch S5 AGM S5A 11 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK800 | 80 Ah 800 A | 315x175x190 mm | More |
| Exide AGM EK820 | 82 Ah 800 A | 315x175x190 mm | More |
| Halfords Advanced AGM 115 | 80 Ah 800 A | 317x175x190 mm | More |
| Lucas Fusion AGM LF115 | 80 Ah 800 A | 315x175x190 mm | More |
| Varta Silver Dynamic AGM F21 | 80 Ah 800 A | 315x175x190 mm | More |
If you’re still unsure which battery fits your Mercedes-Benz CLA , or if you want to help others in their selection, please send us a photo of your current battery in the comment section at the bottom of the page. You can also send the picture to contact@whatbattery.co.uk (we will place it in the comments to also help other users). Be sure to specify the car model, year, type, as well as the engine capacity and power. We’ll do our best to assist you!