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Popular BMW M340i Engine Models

Compare used and reconditioned engine guide prices from trusted UK suppliers. Find replacement engine options by model, price and availability.

Available Engine Models Starting guide prices for replacement engines
Quick Quotes
Engine Code CC Size Fuel Number of Cylinders Aspiration Fits Price
(From)
BMW BMW M340i Engine B58B30B Average rating: 5 4 -300
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -
BMW BMW M340i Engine B58B30B Average rating: 5 4 -300
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -
BMW BMW M340i Engine B58B30B Average rating: 5 4 -300
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -
BMW BMW M340i Engine B58B30B Average rating: 5 4 -300
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -
BMW BMW M340i Engine B58B30B Average rating: 5 4 -300
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -
BMW BMW M340i Engine B58B30B Average rating: 5 4 0
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -
BMW BMW M340i Engine B58B30B Average rating: 5 4 0
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -
BMW BMW M340i Engine B58B30B Average rating: 5 4 0
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -
BMW BMW M340i Engine B58B30B Average rating: 5 4 0
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -
BMW BMW M340i Engine B58B30B Average rating: 5 4 0
B58B30B
3.0 Litre 2998 cc Petrol V TYPE 8 CYLINDER Turbo 2019-2024 -

The fastest way to compare BMW M340i engine options

Direct answer: a failed BMW M340i does not automatically require a main-dealer engine. BuyEngines can help compare used and reconditioned replacement units, fitting options and recovery across mainland UK.

  • Service choice: supply-only or supply-and-fit.
  • Reconditioned engine warranty: up to 3 years, depending on the engine and stated terms.
  • Recovery: available for non-running vehicles to the garage doorstep across mainland UK.
  • Potential saving: up to 40% against comparable main-dealer routes where the job and specification allow.
  • Used engine warranty: up to 6 months, depending on the unit and stated terms.

A practical used-versus-reconditioned decision for the BMW M340i

A used engine is normally the budget-led route; a reconditioned engine is normally the longer-term route. That simple distinction is useful, but it is not the whole decision. A low-cost used unit can become poor value if it lacks suitable warranty or needs substantial additional parts, while a reconditioned engine only makes sense if the rest of the BMW M340i is worth the larger investment. Compare the complete written quote and expected ownership period. Used-engine warranties can extend to six months and reconditioned warranties to three years, depending on the specific product and conditions.

How much does a replacement BMW M340i engine cost?

There is no credible single fixed price for every BMW M340i. The figure changes with the exact engine code, condition, mileage or reconditioning level, availability, ancillaries, warranty and whether labour is included. The total fitted price can also change if the workshop finds damaged supporting components or the cause of the original failure must be corrected. BuyEngines is designed to compare alternatives rather than present a misleading universal figure. Where a comparable main-dealer route exists, suitable jobs can deliver savings of up to 40%, but the meaningful comparison is the completed repair with like-for-like inclusions.

How we narrow down the correct BMW M340i engine

The model name is only the starting point. A useful engine quote may require the registration, VIN, model year, fuel type, capacity, transmission and engine code. Those details help distinguish engines that share a capacity or outward appearance but use different sensors, ancillaries, emissions equipment, mounts or electronics. Ask the supplier to confirm the proposed unit against the vehicle before payment and dispatch. Also confirm whether the quote is for a bare engine, long engine or a unit supplied with selected ancillaries.

Supply-only, fitted service or recovery for your BMW M340i

Supply-only suits you if the vehicle is already with a garage you trust and that garage has agreed to carry out the engine change. Supply-and-fit is useful when you want the engine and installation arranged as one route through the BuyEngines mainland UK garage network. If the BMW M340i cannot be driven safely, recovery can also be arranged to the garage doorstep. Tell us which route you need at the beginning so the quotation reflects the actual job rather than an engine sitting separately from the labour and transport required to use it.

Do not ignore the systems around the BMW M340i engine

If the exact fuel or engine derivative is not obvious from the model name, that is precisely why a registration, VIN or engine-code check should happen before an engine is offered as compatible.

What should you check before approving the engine?

Ask for the engine specification, condition description, warranty length, warranty exclusions and the list of included ancillaries in writing. Check whether the warranty requires new fluids, filters, timing components, oil cooler, turbo checks or other fitting steps. Keep the invoice and installation records. BuyEngines brings 35 years of automotive experience, state-of-the-art workshop facilities, highly qualified mechanics and a mainland UK garage network to the replacement process. Those credentials matter most when they are combined with a transparent quote and a technically correct match.

Which BMW M340i engine route fits your situation?

A useful replacement plan changes with the condition of the car, your budget and how urgently it is needed:

  • If you need budget certainty, ask which extra charges could arise only after removal of the old engine. Knowing the likely exceptions in advance makes supplier quotes easier to compare fairly.
  • If two options are close in price, compare expected ownership time, warranty, condition, installation scope and downtime. The better-value engine is not always the one with the lower purchase figure.
  • If getting back on the road quickly matters most, ask about confirmed engine availability and workshop capacity together. Fast dispatch alone does not help if the fitting slot is weeks away.

On a performance model, exact output specification and specialist installation deserve priority over a bargain engine that is merely 'similar'. Do not infer the exact engine from the model badge alone; verify the vehicle identity before choosing stock.

How to get a BMW M340i engine quote

  1. Tell us what failed: Share the BMW M340i details, symptoms or workshop diagnosis and current location.
  2. Match the engine: Compatibility is checked using the vehicle identity and relevant engine information.
  3. Plan the return to road: Select supply-only or fitting, add recovery if needed and compare the complete repair route.

This information makes the quote more accurate and helps you compare options on the basis of the finished BMW M340i repair.

Compare BMW&nbspM340i engine quotes from trusted UK suppliers BMW&nbspM340i owner comparing replacement engine options Compare BMW&nbspM340i engine warranty mileage and delivery options

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Found a replacement engine quote quickly, and the supplier clearly explained the delivery and warranty options.

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The comparison made it easier to understand my options instead of contacting different engine breakers separately.

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Clear process, quick responses and useful information before I selected a used engine supplier.

Replacement Engine Help

Clear answers for UK drivers comparing used, reconditioned, supply-only and fitted replacement engine quotes.

Frequently asked questions about BMW M340i replacement engines

Is a used BMW M340i engine a good option?

It can be when the vehicle needs a cost-controlled repair and a correctly matched unit with clear condition and warranty is available. Used engines supplied through BuyEngines can have warranty cover of up to six months, subject to the individual engine and terms.

How quickly can a BMW M340i engine be replaced?

Timescale depends on exact engine availability, delivery or recovery, workshop capacity and whether additional faults or parts are found. Ask for a realistic current estimate after the engine has been matched rather than relying on a generic turnaround claim.

Why is specialist fitting important for a BMW M340i?

Higher-value and higher-specification vehicles can have complex ancillaries, electronics and variant differences. A suitably equipped workshop helps ensure the replacement is correctly matched, installed and commissioned, and that warranty requirements are documented.

Should I buy a used or reconditioned engine for my BMW M340i?

A used engine usually suits a lower upfront budget; a reconditioned engine can suit owners planning to keep the vehicle longer and wanting greater internal renewal and longer warranty potential. Compare the complete fitted cost and warranty, not the engine price alone.

Can I have a BMW M340i engine delivered to my own mechanic?

Yes. Choose supply-only if your garage has agreed to fit the engine. Before ordering, make sure the mechanic sees the warranty conditions and confirms which supporting parts or checks are required during installation.

What details do you need to find the correct BMW M340i engine?

Start with the registration. VIN, model year, engine code, fuel type, capacity, transmission or exact derivative may also be needed. The purpose is to confirm compatibility before the engine is reserved or dispatched.

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