The BMW 340i is a compact car built from 2016 to 2024 over 2 generations. Between 2016 and 2024 it grew 8 cm longer and gained 127 kg. Engines offered: Hybrid, V6. Worth buying? It scores near the top of what we track at 4.5/5 — and the year you pick matters far more than the badge (best and worst years →).
What the 340i is
The BMW 340i is a compact car that BMW built from 2016 to 2024 — 9 model years. Our measurements put it at 2 generations, the current one starting in 2021. It has been offered with Hybrid, V6 power. Its closest siblings in the BMW range: M3, 328i, 330i.
340i generations, and what changed
These boundaries are not copied from a brochure — they fall out of the measurements. Where the 340i's length or wheelbase jumps between consecutive model years the platform changed: a facelift moves a bumper by centimetres, a new generation moves the whole car — for the 340i that gives 2 distinct generations below.
| Generation | Length | Wheelbase | Weight | vs previous | Weight change |
|---|---|---|---|---|---|
| 2016-2018 | 463 cm | 281 cm | 1608 kg | - | - |
| 2021-2024 | 471 cm | 285 cm | 1735 kg | +8 cm | +127 kg |
Between 2016 and 2024 the 340i gained 8 cm in length (+1.7%) and 127 kg in weight (+7.9%). Cars did not so much grow as thicken — crash structures, airbags and equipment weigh more than the metal they replaced, and on the 340i that is 127 kg against 8 cm. Full dimensions by year →
BMW 340i tire size, oil type & owner specs
The fitment 340i owners look up most — tires, wheels, oil and batteries. Exact wheel and tire sizes decode from your VIN or the driver's door-jamb placard; the universal items are listed below.
Exact tire, wheel, oil grade, capacity and battery group are added per trim and model year — decode your VIN above for the factory fitment. Universal items shown as-is.
What engines does the BMW 340i have? Power & range
The BMW 340i is offered with 2 powertrains — 3L 6-cyl, 3L 6-cyl Hybrid. Here's the lineup by engine, transmission and drivetrain — 2 for the BMW 340i, against one or two on most rivals.
| Engine | Displacement | Transmission | Drive | Fuel |
|---|---|---|---|---|
| V6 | 3.0L · 6-cyl | Automatic (S8) | AWD | Premium |
| Hybrid | 3.0L · 6-cyl | Automatic (S8) | RWD | Premium |
Horsepower, torque and fuel-tank size decode from your VIN — exact figures vary by engine and trim.
Source: EPA fueleconomy.gov (engines, drivetrain, range, charge time). Horsepower & torque from NHTSA vPIC on VIN decode.
The 340i by the numbers
What the federal and market records say about the BMW 340i. Each line opens the full breakdown by year.
| Topic | 340i | Detail |
|---|---|---|
| Recalls | 1 campaigns | NHTSA, all years |
| Reliability | 4.5 / 5 | Best and worst years |
| Insurance | $1,671/yr | Estimated full coverage |
| Used value | 29 listings | What it sells for now |
Frequently asked questions
What kind of car is the BMW 340i?
The 340i is a compact car, built from 2016 to 2024 across 2 generations. Engines offered: Hybrid, V6.
How many generations does the 340i have?
2 by our measurements, the latest starting in 2021. We draw the boundaries where length or wheelbase jumps between model years — a facelift moves a bumper, a new generation moves the whole car. Over its life the 340i grew 8 cm longer and gained 127 kg.
What is the BMW 340i warranty?
New models carry 4 years / 50,000 miles basic cover and 4 years / 50,000 miles on the powertrain. Worth knowing: across our complaint records the typical car reaches the halfway point of its faults at five years, so most repairs land after the basic warranty ends.
Is the 340i reliable?
It scores 4.5/5 in our data. The honest answer depends on the year far more than the model — see the best and worst years, and when this car starts to break.
How do I check a specific 340i?
This page describes the model; it cannot tell you whether that car has an open recall or a branded title. Run its VIN against the records — free, and matched to the exact production run.
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