* Engine Bay Size: The Fiesta's engine bay is significantly smaller than the Mondeo's. The 2.0 engine is simply too large to fit.
* Mountings and Subframe: The engine mounts and subframe are designed for the Fiesta's smaller engine. Modifying them to accommodate the larger Mondeo engine would be a massive and possibly unsafe undertaking.
* Transmission Compatibility: The transmission from the Mondeo would not be compatible with the Fiesta's drivetrain.
* Wiring and Electronics: The wiring harnesses and engine management systems are completely different, making integration incredibly difficult and potentially unreliable.
* Cost and Complexity: Even if the physical fit were possible, the amount of work required to adapt the engine, transmission, wiring, and other components would be extremely costly and time-consuming.
What you should consider instead:
* Engine Swap Options: Consider swapping in a slightly larger engine from a different Ford model that is more compatible with the Fiesta's chassis.
* Engine Upgrades: Focus on upgrading the existing 1.1 engine with performance parts to improve its power.
* Engine Rebuild: If the engine is in poor condition, consider a complete rebuild or replacement with a refurbished engine.
Important Note: Any engine swap or modification should be done by a qualified mechanic who understands the complexities of car systems. Improperly modifying a car can be dangerous and may lead to serious damage or even injury.
