For drivers covering long distances across the UK, electric vehicles often remain impractical. Limited range, charging infrastructure gaps, and long refuelling times still pose challenges. For now, diesel remains a sensible option. And with the UK’s law banning the sale of new petrol and diesel cars from 2030, we are likely experiencing the final wave of diesel powered vehicles. Here are some of the most efficient diesels still available and why they matter for high mileage motorists.
The Skoda Octavia 2.0 stands out for its diesel economy, offering official WLTP combined figures around 60 mpg with real world figures close to that. It delivers generous practicality with a 600 litre boot, ideal for families and long distance travel. Though not particularly powerful on inclines, it excels on motorways and A roads.
The Volkswagen Golf uses the same 2.0 litre diesel engine as the Octavia and offers similar efficiency. It trades some boot space for a more compact profile, but remains comfortable, refined and enjoyable to drive on mixed roads.
The Mercedes C Class C220d impresses with official returns of nearly 63 mpg. It offers a quiet, smooth ride with a high quality interior and strong efficiency for a premium saloon. While not the most spacious option in its class, it is refined and comfortable.
The Ford Focus 1.5 EcoBlue is among the most efficient diesels available, with up to 67 mpg under test conditions. It offers sharp handling and a lighter footprint, making it a good choice for drivers who want to enjoy their daily drive without compromising economy.
The UK government plans to ban the sale of new petrol and diesel cars from 2030 as part of its emissions strategy. Hybrid and electric vehicles are now the focus, but second hand diesel cars will still be legal to sell and drive after the ban comes into effect.
This transition signals the final chapter for diesel development. Manufacturers continue refining diesel technology, meeting stricter emissions rules and improving economy. But attention and investment have shifted decisively toward electrification.
Today’s diesels represent the most efficient and cleanest the technology has ever been. With no new diesel platforms expected beyond this decade, the current generation may well be the last. Mazda’s upcoming Skyactiv D six cylinder engine is a rare late addition to an otherwise closing chapter.
If you rely on long motorway runs, the best of today’s diesel estates and saloons remain the ideal option. For shorter or more varied routes, smaller diesels like the Focus offer genuine appeal. With second hand diesels remaining legal beyond 2030, now is a sensible time to invest in one of these final efficient diesel vehicles while they are still readily available.
