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GDI and emissions problems (from Auto Express UK)
Production of the Peugeot 308 GTi by Peugeot Sport is to go on a four-month hiatus due to tightening emissions regulations. The latest Euro 6.2 rules have forced the French brand to reengineer its hot hatchback, with sales due to resume in October.
The latest regulations - which take the WLTP real world economy and emissions standards into account - mean that the Peugeot’s 1.6-litre turbocharged engine will need tweaking to stand up to the stricter guidelines. The same is expected with many high performance direct injection petrol units. The addition of a petrol particulate filter should reduce the 308’s emission of fine soot particles - known to be a contributor to severe respiratory issues - by a significant amount. It’s a move that Volkswagen applied to all of its turbo petrol models last year in response to the ‘dieselgate’ emissions scandal. BMW use the same engine.

Pollution caused by tyre wear and brake dust is to be tackled by a new Government Clean Air Strategy.
With plans already in place to tackle air pollution from exhaust emissions, the Government’s next focus will be particulate matter with a diameter of less than 2.5 micrometres (PM2.5) emitted by tyres and brakes as they wear.
Owing to their small size - roughly 5 per cent the thickness of a human hair - PM2.5 emissions are capable of bypassing human noses and throats, penetrating deep into the lungs. Their presence has been linked to a number of health conditions, including respiratory illnesses.
Experts estimate that by 2030, as the transport sector moves into electric vehicles, 90 per cent of harmful PM2.5 emissions will be caused by microscopic particles eroding from tyres and brakes as they age.
The new Clean Air Strategy from the Department of Health, Public Health England and the Department for Environment, Food and Rural Affairs (Defra) sets out Government intentions to “research and develop new standards for tyres and brakes to enable us to address toxic non-exhaust emissions of micro plastics from vehicles which can pollute air and water.”

My view is GDI improves performance and fuel economy but at what price.
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