Batteries for BMW X6 xDrive 40 d 306 hp (diesel, 2009-2014)
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BMW · X6Which battery does a BMW X6 xDrive 40 d need?
Specifications and battery: xDrive 40 d (306 hp)
BMW X6 xDrive 40 d (306 hp, diesel, 2009-2014) takes a 95 Ah, 850 A AGM battery (353 × 175 × 190 mm), with the positive terminal on the right. It is a Start-Stop battery, so it should not be replaced with a conventional one. It also has an auxiliary battery: a 15 Ah, 200 A AGM battery (150 × 90 × 145 mm). (N57 D30 B)
- Brand
-
BMW
- Model
-
X6 (E71, E72)
- Built
- 07/2009 - 06/2014
- Power
- 225 kW / 306 hp
- Fuel
- Diesel
- Engine size
- 2,993 cc (3 L)
- Cylinders
- 6
- Body type
- SUV
- Drive
- All-wheel Drive
- Engine codes
- N57 D30 B
- Start-Stop battery
- Yes (AGM/EFB)
Battery for this engine
| Version | Technology | Capacity | Cold cranking (EN) | Size (L×W×H) | Polarity |
|---|---|---|---|---|---|
| Main | AGM | 95 Ah | 850 A | 353 × 175 × 190 mm | + on the right |
| Auxiliary | AGM | 15 Ah | 200 A | 150 × 90 × 145 mm | + on the left |
This engine shares its battery with the xDrive 30 d (211 hp), xDrive 30 d (235 hp), xDrive 30 d (245 hp), xDrive 35 d (286 hp) and 4 more: the compatible batteries are exactly the same.
Data: vehicle specifications and the battery manufacturer's application catalogue.
EFB, AGM or conventional for this engine?
The BMW X6 xDrive 40 d has Start-Stop, so it needs an AGM battery of around 95 Ah to cope with the hundreds of restarts a day. A conventional battery in its place lasts a few months and the control unit ends up disabling Start-Stop. If the original was EFB you can upgrade to AGM, never the other way round.
Battery analysis for your BMW X6 xDrive 40 d
Quick answer You need an AGM battery of 95 Ah. Our recommendation: VARTA A5. For the auxiliary battery we recommend TUDOR TK151 of 15 Ah.
Batteries in your BMW X6 xDrive 40 d
Prices and availability updated on 13/11/2026
Based on the batteries we found for your vehicle, our experts help you pick the right one.
📋 What we found
For your BMW X6 xDrive 40 d we found 3 compatible batteries. This list includes 1 Start-Stop battery and 2 auxiliary batteries.
⚡ Starter or auxiliary battery
We detected an auxiliary battery among the compatible ones. The auxiliary is NOT your main car battery: it is a smaller secondary battery that powers sensitive electronics. Don't mix them up when buying. Usually what fails is the starter battery (the main one), but the auxiliary can also fail. If your vehicle shows intermittent electronic errors but starts fine, it may be the auxiliary; if cranking is weak, it is usually the starter battery.
✓ Your BMW X6 xDrive 40 d uses the Start-Stop system. Every battery shown is compatible — no conventional options to confuse you.
🔋 Technology (AGM / EFB)
✓ All Start-Stop batteries in the list are AGM. If your current battery is AGM, this is the right replacement. If it is EFB, an AGM is also a valid upgrade, but on cars with battery management (BMW, Mercedes, VAG group…) it must be registered and coded for the new technology with a diagnostic tool; otherwise the car keeps charging it as an EFB.
📊 View AGM vs EFB vs Conventional — full comparison
⭐ Our recommendation
For your BMW X6 xDrive 40 d we recommend the VARTA A5 (AGM, 95 Ah). It's the battery recommended by the vehicle manufacturer for your BMW X6 xDrive 40 d — the OEM equivalent. It also offers the highest capacity (Ah) and the highest cranking power (CCA) on the list — more headroom in cold starts and with many consumers. Varta is the world's leading manufacturer of starter batteries and supplies first-equipment (OEM) batteries to the major European car makers.
- Rated 4.0/5 by 8 verified customers.
- Get it on Tuesday before 5 PM — your product ships on Monday.
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Verified selection
- Class: Car Batteries
- Brand: BMW
- Model: X6
- Engine: xDrive 40 d
Start-Stop & high energy demand batteries
AGM or EFB battery for start-stop vehicles and for cars with high energy demand (many electrical consumers, frequent starts). More charge cycles, better charge recovery and longer service life.
| Category | Make | Reference | Capacity | Cold cranking | Dimensions | Technology | Price | |
|---|---|---|---|---|---|---|---|---|
| Start-Stop & high energy demand batteries | VARTA | A5 | 95 Ah | 850 A | 353×175×190 mm | AGM | €192.59 | More info |
Auxiliary Battery
Auxiliary battery for vehicles equipped with start-stop systems. It supports the main battery in functions such as engine start, the start-stop system, or additional electrical support.
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Chargers
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Frequently asked questions
- Yes, you can install a higher capacity (Ah) battery as long as the physical dimensions fit your BMW X6 xDrive 40 d battery compartment and the positive terminal position matches.
- The Bmw X6 Xdrive 40 D requires a battery with the correct capacity (Ah) and Cold Cranking Amps (CCA) for this engine. Compatible batteries offer 95 Ah, 850 A (CCA), 12 V, case H8/L5, Start-Stop (EFB/AGM) technology. Browse the compatible battery list below.
- The exact Ah rating for the Bmw X6 Xdrive 40 D depends on the vehicle's original electrical consumers. Compatible batteries offer 95 Ah, 850 A (CCA), 12 V, case H8/L5, Start-Stop (EFB/AGM) technology. Use our finder for a precise recommendation.
- You need the make, model and engine. If your car has Start-Stop (the engine switches off at traffic lights), it needs an EFB or an AGM battery, depending on what it came with: if it has an AGM, fit another AGM; if it has an EFB, another EFB or an AGM. On cars with battery management (BMW, Mercedes, VAG group…), moving from EFB to AGM requires coding the new battery. Without Start-Stop, a conventional battery is fine, or an EFB or AGM if you want a longer life.
- A conventional (lead-acid) battery is for cars without Start-Stop. An EFB is a reinforced conventional battery for basic Start-Stop. An AGM offers the highest performance and is fitted as standard on cars with advanced Start-Stop, regenerative braking or high electrical demand. Replacement rule: an AGM only with another AGM; an EFB with another EFB or an AGM; a conventional battery with any of the three. Never move down in technology.
- Use the search tool by selecting your vehicle's make and model. Our system automatically filters compatible part numbers verified by our technicians. If you have any questions, contact us via WhatsApp.
- All our batteries come with the legal guarantee provided by consumer law against manufacturing defects. If a battery has a manufacturing defect, it will be replaced at no cost to the user.
- Under normal circumstances, batteries usually arrive within 1 to 2 days of ordering. However, there are some cases where delivery may take a little longer: peak seasons (Black Friday, Christmas, etc.), palletized shipments, occasional stock shortages, etc.
- In mainland Spain delivery takes 1 to 2 working days if you order before 6:00 pm (Monday to Friday) and the battery is in stock; mainland Portugal takes 1 to 3 working days, the Balearic Islands 1 to 5 working days and other EU destinations 1 to 5 working days. Batteries are shipped fully charged and ready to install.
Guides
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This vehicle uses a Start-Stop battery (AGM or EFB): do not replace it with a conventional one. The manufacturer requires the new battery to be registered via OBD with a diagnostic tool and, if you change technology (EFB → AGM), coded; without this step it lasts much less.