Found a replacement engine quote quickly, and the supplier clearly explained the delivery and warranty options.
If an older smart Fortwo or Forfour develops serious engine trouble, replacing the engine can be more economical than replacing an otherwise usable car. BuyEngines.co.uk helps UK drivers source used and reconditioned smart engines and can support supply-only, supplied-and-fitted and vehicle-recovery requirements.
It is important to separate legacy combustion-engine smart cars from the brands current UK range. Todays smart #1, #3 and #5 are fully electric and do not use a conventional petrol or diesel engine. Engine-replacement enquiries therefore mainly concern earlier Fortwo and Forfour generations, including small turbo-petrol, naturally aspirated petrol and some diesel applications found on older UK vehicles.
My smart engine has failed - should I repair or replace it?
The answer depends on the diagnosis. A misfire, turbo fault, cooling problem or sensor issue does not automatically require a replacement engine. Replacement becomes more likely after severe overheating, low compression, internal knocking, oil starvation, major timing damage, cracked internal components or seizure.
Before buying another engine, obtain as much diagnostic information as possible. Send the registration, VIN where available, model, year, engine capacity, mileage, gearbox type, postcode and symptoms. On older smart cars, correct generation and engine-code matching is especially important because small visual differences can hide significant mechanical and electronic changes.
Used smart engines
A used engine can keep an older Fortwo or Forfour economically viable when the rest of the vehicle is in good condition. Compare more than price: ask for engine code, donor details, mileage evidence where available, running or compression evidence, included ancillaries and warranty terms.
Qualifying used smart engines can include up to 6 months warranty, subject to written conditions and correct installation.
Reconditioned smart engines
Reconditioning can be attractive where the vehicle is to be kept and the owner wants a greater level of internal renewal. A meaningful reconditioned-engine quotation should describe what has been stripped, measured, machined and replaced. Common wear items and known weak areas should be assessed during the rebuild rather than simply cleaning and resealing the unit.
Qualifying reconditioned engines can carry up to 3 years warranty. The exact warranty depends on the specific engine and service package and should always be read before purchase.
How do I make sure I buy the correct smart engine?
Do not rely only on Fortwo 1.0 or Forfour 0.9 . Match the full specification. Different generations can use different engine families, turbo systems, mounting points, sensors, electronics, emissions equipment and gearboxes.
- UK registration and VIN
- full engine code or number where available
- Fortwo or Forfour generation and year
- petrol or diesel and exact capacity
- turbocharged or naturally aspirated specification
- manual, automated manual or other transmission specification
- parts included with the replacement engine
Smart engine supply only
If your local garage is already prepared to fit the engine, a supply-only quote can be the simplest option. Confirm delivery cost, what is included, what must be transferred from the old engine and any parts the warranty requires to be renewed during installation.
Smart engine supplied and fitted
For many owners, a supplied-and-fitted package removes the difficulty of finding an engine and then separately finding a garage willing to install it. The written quotation should identify labour, fluids, filters, seals, timing or auxiliary service items where applicable, diagnostic work and final testing.
