Ford Focus EcoBoost Emissions Guide

Before you buy a new or used car, it’s important to be aware of the CO2 emissions of the car make and model you’re looking to buy. The emissions will impact the ongoing running costs of a vehicle and, while you may be able to afford the initial cost of a car, it’s important not to be caught off guard with mounting ongoing running costs. This guide will take a look at the Ford Focus Ecoboost range of engines and, specifically, their emissions output.

In this guide:

Learn more about how CO2 emissions can affect the ongoing costs of your new or used car.

Find out more about how the CO2 emissions of a car are decided.

Learn more about what EcoBoost engines are and their emissions.

Find out how Ford Focus EcoBoost emissions compare to other Ford Focus models.

CO2 emission classification: what does it mean for your ongoing car costs?


The CO2 emissions emitted by a car can have an impact on the overall running costs so it’s an important factor to consider when buying a new or used car.

Car tax


Recently, a rise on VED (Vehicle Excise Duty) was introduced. This rise applies in particular to newly registered vehicles after 2017, with those costing over £40,000 paying a supplement of £310 for five years on top of the £140 Standard Rate annual tax, charged irrespective of emissions levels.
Key to this is that cars which produce zero emissions pay zero, while the emissions tax for the first year after purchase is staggered depending on the g/km produced.
This means that, for example, a car producing between 91-100g/km should expect a charge of £120, while car owners with a vehicle that produces between 131-150g/km can expect their VED rate to be £200.


Fuel economy


On average, diesel engines are more economical than petrol engines in terms of miles per gallon. However, petrol cars are cheaper at point of purchase, so it’s worth weighing up your car purchase in terms of how much use you’re planning to get out of it vs your average day-to-day fuel consumption.

How are cars tested for CO2 emissions?


The Worldwide Harmonised Light Vehicle Test Procedure (WLTP) was introduced to meet Euro 6 emissions standards. This procedure is conducted at random to vehicles on the production line, with four stages involved testing the car at a variety of speeds through manoeuvres.
As this testing system is applied to the least and most economical models in a single range of models, WLTP gives an accurate assessment of that make and model’s CO2 emissions output.


Ford Focus EcoBoost engine: summary and emissions output


Let’s take a look at the Ford Focus EcoBoost engine and why it’s such a well-performing engine choice in relation to CO2 emissions and economy.

What is the Ford Focus EcoBoost engine?


The Ford Focus EcoBoost engine is the turbocharged petrol engine that’s been designed by Ford to deliver maximum efficiency and performance while maintaining a lower CO2 output.
Not to be confused with the EcoBlue, Ford’s equally powerful diesel engine, the EcoBoost utilises exhaust gases, which are usually wasted, to supercharge the engine by compressing this air and reusing it.


Ford Focus EcoBoost engine CO2 emissions

Model CO2 emissions (g/km)
Ford Focus 1.0L EcoBoost Zetec 100PS 120g/km
Ford Focus 1.0L EcoBoost Zetec 125PS 125g/km
Ford Focus 1.0L EcoBoost Zetec 125PS Auto 137g/km
Ford Focus 1.0L EcoBoost ST-Line X 125PS 133g/km
Ford Focus 1.0L EcoBoost ST-Line X 125PS Auto 139g/km
Ford Focus 1.5L EcoBoost ST-Line X 182PS 139g/km
Ford Focus 1.5L EcoBoost ST-Line X 182PS Auto 146g/km
Ford Focus ST 2.3L EcoBoost 280PS 187g/km
Ford Focus 1.5L EcoBoost Titanium 150PS 127g/km
Ford Focus 1.5L EcoBoost Titanium 150PS Auto 143g/km


How do Ford Focus EcoBoost CO2 emissions compare?

It's always worth comparing EcoBoost CO2 emissions with other makes in the Ford Focus range. Here are some core Focus model ranges to compare against the EcoBoost engine.

Ford Focus ST


The 2.3L petrol engine of the Focus ST hatchback produces 179g/km which is a few g/km lower than the EcoBoost engine alternative. However, given the efficiency of the specs installed in the EcoBoost engine, it’s still worth considering the EcoBoost engine.

Ford Focus Zetec & Ford Focus Titanium


The Focus Zetec engine is the name given to a variety of Ford 4-cylinder engines since the early 90s. The Ford Focus Zetec model is invariably better economically when powered with a 123bhp EcoBoost engine. This is also true of the Focus Titanium: it's always worth opting for the EcoBoost engine, for ongoing costs as well as first registration.

Ford Focus ST-Line


Ford Focus ST-Line vehicles aren't available without a variation of the EcoBoost engine, unless you're opting for the diesel choice, EcoBlue. With the ST-Line X producing 146g/km, as mentioned above, it's pretty middle of the ground when it comes to VED tax, with a first registration Standard Rate charge of £215 in the 131-150g/km bracket.

In summary...


Ford’s Focus EcoBoost engines are largely outstanding when it comes to emissions from petrol engines. The amount you pay will depend on your chosen model but, if you’re really looking for an environmentally friendly vehicle that isn’t an electric or hybrid, the 1.0L Ford Focus Zetec is a fantastic low-cost run around.