Used BMW 340

What to know before buying: BMW 340

From 4 video reviews · updated 26/09/2026

What the reviews say

• The F30 340i combines a capable, reliable B58 engine with everyday practicality; its owner describes it as suitable for both back-road driving and long trips.[2]one source
• The 340i offered rear- or all-wheel drive and a six-speed manual or eight-speed automatic; owners particularly praise the ZF automatic's speed and torque capacity.[2][4]
• Several reviewers describe the F30's electric steering as light, numb and short on feedback, while regarding the G20 M340i system as an improvement.[2][3][4]
• An F30 340i can be surprisingly sparsely equipped; M Sport adds the preferred wheel, rims and staggered tyres, while the cooling and performance-tyre package adds larger brakes and an extra oil cooler.[2][4]

Typical faults

• B58 owners report gradual coolant loss without an obvious leak; one possible cause is a poorly sealing expansion-tank cap.[2]one source

  B58

• Higher-mileage B58 cars have been reported with leaking water pumps, oil-filter housings and water-to-air intercoolers, plus VANOS issues.[2]one source

  B58

• F30 parking-brake cable retainers can break, allowing the cables to sag, rub against the driveshaft and produce a loud noise.[2]one source
• One 2018 340i xDrive developed door noise at low speed and over speed bumps; the warranty repair had to be repeated when the noise returned three months later.[3]one source

  2018–2018 · B58

• The same 2018 car had produced a front-end whine since purchase that grew louder under harder driving; the owner could not establish whether the gearbox, differential or another component caused it.[3]one source

  2018–2018 · B58

Which engine and version to take

• For the F30, the 3.0-litre turbocharged inline-six B58 is the pick; the source calls it the engine to get, citing reliability, little turbo lag and substantial tuning potential.[2]one source

What to check at the inspection

• With the engine cold, check coolant level and look for dried residue on the expansion-tank cap threads; if the level is falling, have the cooling system pressure-tested.[2]one source
• Inspect the parking-brake cable retainers underneath and ensure the cables are not sagging toward the driveshaft; listen for scraping or loud mechanical noise on the test drive.[2]one source
• During the test drive, cross speed bumps slowly while listening for door noise, then check for a front-end whine after more assertive driving.[3]one source
• Verify a history of regular oil changes. The source stresses their importance because the B58 timing chain is at the rear of the engine and would be complicated to service.[2]one source
• Inspect the underside carefully and verify paint history: during one search, several performance cars showed accident damage underneath, while the selected example had a repainted front bumper.[1]one source
• Confirm the actual specification: a 340i badge does not guarantee generous equipment, and cars can differ in drivetrain, transmission, brakes, cooling and M Sport hardware.[2][4]

Verdict

Sources

1. [1]AUTO 2000 — Bmw M340i apskats ! · ▶ video
2. [2]Justin Buice — THIS WILL MAKE YOU WANT A BMW 340i · ▶ video
3. [3]NW Auto — F30 BMW 340i One Year Ownership Review · ▶ video
4. [4]Reoniz — 2018 BMW 340i (ZHP) Review: The Perfect Used Baby M3?? · ▶ video

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