The debate around diesel vehicles continues, but recent insights from the RAC provide some clarity. Modern diesel cars, particularly those made after 2015, have significantly reduced harmful emissions due to advanced technologies like diesel particulate filters (DPFs) and adherence to Euro 6 standard.
https://www.rac.co.uk/drive/advice/emissions/diesel-emissions-are-diesel-cars-bad-for-the-environment/
However, challenges remain. Older diesel models contribute disproportionately to urban air pollution, leading to increased restrictions in Clean Air Zones across the UK and Europe. Additionally, the diesel market share in the UK has dropped to just 5.8% in 2025, reflecting a broader shift towards cleaner alternatives.
At Sierra CP Engineering Limited, we are at the forefront of this transition. Our advanced test and development solutions enable automotive manufacturers to innovate and meet stringent emissions standards. By facilitating the development of cleaner diesel technologies and supporting the shift to electrification, we are driving a more sustainable future.
Testing questions? We would love to hear about your projects
📞 +44 (0)1684 770 400
UK Facility Open Day
July 9, 2026
