London ULEZ Gen 6 Engine Swap Options, Need a green engine to meet London ULEZ emissions - any ideas?? Options

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Hey All,

So I don't know how many of you potentially live in the UK or if this is common knowledge, but they have introduced the 'Ultra Low Emission Zone' (ULEZ) which is effectively a tariff whenever you drive into central London in a more polluting vehicle. The criteria for vehicles which don't have to pay this charge is:

Minimum emission standards

Petrol: Euro 4
Diesel: Euro 6

The ULEZ is enforced based on the declared emissions of the vehicle rather than the age. However:

Petrol cars that meet the ULEZ standards are generally those first registered with the DVLA after 2005, although cars that meet the standards have been available since 2001
Diesel cars that meet the standards are generally those first registered with the DVLA after September 2015

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This means that unfortunately my gen 6 Celica has to pay £12 every day that I want to drive into central London. This hasn't been too bad until now, as I live on the outskirts, however they are going to be expanding this zone massively early next year and it is going to effectively make it impossible for me to keep using my Celica as my daily drive.

Which brings me onto the question; is there any relatively simple engine swap I could undertake which would allow me to meet at least those minimum emissions standards, and allow me to keep running my Celica? The key considerations would be:

1. It must at least meet Euro 4 emissions standards (ideally above and beyond this, as I can imagine they will continue to push the standards higher down the line)
2. It must be relatively straightforwards (as far as engine swaps go - I realise any engine swap is a fairly major undertaking)
3. Ideally the donor engine would be comparable in power and feel to the current 3SGE in the car now
4. Ideally the donor engine would be readily available; a car which is common enough to find second hand in the UK

Any advice would be much appreciated. If a suitable engine exists, you can expect to see a set of photo / video updates as I undertake the engine swap..

Thanks in advance,
A