Checked battery group size
2018 BMW 340i GT xDrive battery size
Battery size varies by configuration for the 2018 BMW 340i GT xDrive. Select the row that matches your trim or battery position before ordering.
| Configuration | Group size | Type | CCA min |
|---|---|---|---|
| All checked configurations | Group 49 / H8 / LN5 | AGM listed by sources | 900 |
| L4/3.0L | Group 49 / H8 / LN5 | AGM listed by sources | 900 |
| L6/3.0L | Group 49 / H8 / LN5 | AGM listed by sources | 900 |
Before you buy or install
These items are not confirmed by the current checked records for this page.
- Terminal layout Unverified
- Current checked records do not confirm positive-post side or terminal layout. Match the current battery label and cable reach before checkout.
- Battery registration / reset Unverified
- Checked records for this page do not confirm whether this vehicle needs a battery registration, BMS reset, or scan-tool step after replacement.
- OEM CCA baseline Not confirmed
- Current records list 900 CCA from Advance Auto Parts; this page does not have an OEM CCA baseline.
- Physical dimensions Not in record
- Group 49 / H8 / LN5 identifies the battery group, but current checked records for this page do not publish source-backed L x W x H dimensions.
2018 BMW 340i GT xDrive battery specifications
Use the row that matches your engine, trim, or battery position. Fields without source-backed values stay marked Unverified.
| Configuration | Group size | Type | CCA min | CA | RC (min) | Terminal layout | Sources |
|---|---|---|---|---|---|---|---|
| All checked configurations | Group 49 / H8 / LN5 Reference | AGM listed by sources | 900 | 1000 | 160 | Unverified | Advance Auto Parts |
| L4/3.0L | Group 49 / H8 / LN5 Reference | AGM listed by sources | 900 | Unverified | Unverified | Unverified | Interstate Batteries |
| L6/3.0L | Group 49 / H8 / LN5 Reference | AGM listed by sources | 900 | Unverified | Unverified | Unverified | Interstate Batteries |
Additional checked specs
- CA at 32 °F
- 1000
- Reserve capacity
- 160
Installation notes
Unverified Checked records for this page do not confirm whether this vehicle needs a battery registration, BMS reset, or scan-tool step after replacement.
2018 BMW 340i GT xDrive battery: fitment notes
Battery size varies by configuration. Select the matching engine, trim, or battery position before ordering.
CCA rating should meet or exceed listed specification for your climate.
Terminal position matters for cable reach — confirm positive terminal side before ordering.
Open the retailer's vehicle selector, choose 2018 BMW 340i GT xDrive, and confirm group size, battery type, and terminal position before placing your order.
2018 BMW 340i GT xDrive battery checkout fitment check
Use these selectors only after reviewing the unresolved fitment checks above. Enter 2018 BMW 340i GT xDrive and confirm Group Group 49 / H8 / LN5, terminal layout, and any reset requirement before finalizing your order.
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BMW 340i GT xDrive battery size by year
Group Group 49 / H8 / LN5 is consistent across all 2 checked BMW 340i GT xDrive years (2017–2018).
Use this table to open the checked battery page for another BMW 340i GT xDrive model year.
| Year | Group size |
|---|---|
| 2018 | Group 49 / H8 / LN5 |
| 2017 | Group 49 / H8 / LN5 |
Data sources checked
2 supporting catalog source records are shown below. Battery group size and type facts on this page trace to checked source records. This table does not imply OEM confirmation unless an OEM source is shown. Fields without source-backed values remain Unverified. Other checked records that did not support a displayed field are kept out of this public table.
| Source | Role | Supports | Checked |
|---|---|---|---|
| Advance Auto Parts | Retailer selector | Group size, CCA, CA, Reserve capacity, Battery type, Stop-start | 2026-07-06 |
| Interstate Batteries | Battery catalog | Group size, CCA, Battery type | 2026-07-06 |
2018 BMW 340i GT xDrive battery — common questions
- What battery group size fits the 2018 BMW 340i GT xDrive?
- Checked source records list Group Group 49 / H8 / LN5 for the 2018 BMW 340i GT xDrive. BCI group sizes define the battery's physical dimensions and terminal positions. Do not infer terminal layout from the group number alone; match the current battery label or terminal layout before checkout.
- Why does terminal position matter for battery replacement?
- Terminal position (positive on the left or right when facing the battery) determines whether the factory cable length reaches the correct post and whether the hold-down bracket fits. Confirmed terminal data is not yet in checked records for this vehicle. Verify the layout in the retailer's vehicle selector or check your current battery label before ordering.
Look up another vehicle battery
Select year, make, and model to open the checked battery size record.