E Transit Custom vs Diesel: Does Going Electric Make Sense for Your Business?

The £11,000 Question Every Van Buyer is Asking

It used to be simple. You needed a van, you bought a diesel, you got on with your life. Maybe you agonised over whether to get the 136 or 170 horsepower engine, but that was about as complicated as it got. Now? Now there's a fully electric Transit Custom sitting in the showroom next to its diesel sibling, and the difference between them isn't just what goes in the fuel filler. It's roughly £12,000 to £13,000 depending on spec, and that's before you've even thought about charging points, range anxiety, or whether you can actually make it to that job in Watford and back without running out of juice.

The E Transit Custom has landed at a pivotal moment. ULEZ has expanded across all Greater London boroughs, fleet electrification targets are squeezing businesses from one direction while energy costs squeeze from another, and Ford has just announced that from early 2026, the electric Custom gets a bigger battery pushing range up to 232 miles. So the calculation has shifted. But has it shifted enough?

I've spent the past few months speaking to owner operators and fleet managers trying to work this out. Some have made the switch and haven't looked back. Others tried electric, hated every minute, and returned to diesel within six months. The truth, as always, lies somewhere in the messy middle.

The Upfront Cost Gap: More Complicated Than It Looks

Let's deal with the elephant in the room first. A diesel Transit Custom in base Trend trim starts at around £32,350 excluding VAT. The equivalent E Transit Custom opens at roughly £45,000. That's a gap of nearly £13,000 before you've specced a single optional extra.

But wait. There's the plug in van grant, which until March 2025 at least knocks a chunk off the electric version. Then there's the fact that electric vans hold their value differently. Used E Transit Customs are already appearing on forecourts at prices that suggest depreciation isn't hitting them quite as hard as predicted. I spoke to a dealer in Birmingham last month who reckoned his electric stock was shifting faster than the diesels, purely because businesses with ULEZ exposure were desperate.

The other factor nobody talks about enough is trim level weirdness. Ford doesn't offer the E Transit Custom in base Leader spec. The range starts at Trend, which already packs a 13 inch touchscreen, rear camera, and adaptive cruise control. Compare like for like on equipment, and that £13,000 gap shrinks a bit. Not massively. But a bit.

For a small business running a single van, that upfront premium still stings. For a fleet operator doing the maths over four years and 100,000 miles, it starts looking very different indeed.

Running Costs: Where Electric Fights Back

Here's where the E Transit Custom claws back some ground. And honestly, if your routes and charging setup align properly, it claws back a lot.

Fuel versus electricity is the obvious one. A diesel Custom returning a realistic 35 to 38 mpg in mixed driving will cost you somewhere around 18 to 20 pence per mile at current diesel prices. The electric version, charged overnight on a typical home tariff of around 24 pence per kWh, works out at roughly 8 to 10 pence per mile. That's nearly half. Over 20,000 miles a year, you're looking at saving somewhere between £2,000 and £2,500 annually. Over a typical four year ownership cycle, that's potentially £8,000 to £10,000 back in your pocket.

Then there's road tax. The diesel attracts a flat £320 per year. The electric version? Zero. Until April 2025 at least, when electric vehicles become liable for VED, but even then the rates will be lower than combustion equivalents for some time.

Servicing is where things get properly interesting. The diesel Transit Custom needs attention every two years or 25,000 miles, whichever comes sooner. Oil changes, filter replacements, timing belt inspections further down the line. The E Transit Custom's service interval is simply every two years. No mileage limit. No oil. No particulate filter to worry about. Ford recommends servicing regardless of how many miles you've covered, and the work involved is substantially less. No DPF regeneration cycles to fret over, no injector seals quietly degrading, no turbo actuator deciding to pack up at 80,000 miles.

I knew a bloke running a small courier business out of Croydon who switched three of his five vans to electric purely because his maintenance bills had become unpredictable. He'd had two diesel Customs in succession develop gearbox issues around the 90,000 mile mark. His accountant had flagged it. The electric vans have far fewer moving parts to go wrong.

The ULEZ and Congestion Charge Reality Check

If you operate anywhere near London, this section matters more than everything else combined.

The ULEZ charge for non compliant vehicles is £12.50 per day. Every single day. Seven days a week, except Christmas. A diesel Transit Custom registered after September 2015 should be Euro 6 compliant and therefore exempt, which means newer diesels don't face this particular penalty. But if you're running an older van, or you're buying secondhand and looking at pre 2016 stock, that charge stacks up sickeningly fast. Five days a week in the zone costs you £3,250 a year. Just in ULEZ.

Electric vans remain completely exempt from ULEZ. That hasn't changed and won't change anytime soon.

The Congestion Charge is trickier. From January 2026, the daily fee rises to £18. Electric vehicles have lost their full exemption, but vans registered with Auto Pay get a 50% discount, bringing it down to £9 per day. Diesel vans pay the full whack. If you're regularly entering central London, that's £9 saved every time.

Here's the killer calculation. A diesel van doing four days a week in the Congestion Charge Zone over 48 working weeks pays £3,456 annually. An electric van with the discount pays £1,728. Saved: £1,728 per year. Add in fuel savings, servicing savings, road tax savings, and suddenly that £13,000 upfront premium doesn't look quite so terrifying.

Range and Charging: The Honest Truth

Right, let's talk about the bit that keeps people awake at night. 209 miles is the current WLTP range for the E Transit Custom with its 64 kWh battery. From early 2026, Ford is upgrading to a 71 kWh pack pushing that to 232 miles. But WLTP figures and reality are different creatures entirely.

In real world driving, carrying actual loads, in actual British weather, expect somewhere between 150 and 180 miles depending on conditions. Cold days hammer range. Motorway speeds hammer range. Running the heater properly (and you will, because it's Britain) hammers range. The 64 kWh battery's efficiency sits around 2.8 to 3.4 miles per kWh in practice, which is decent for a van but nowhere near the numbers a Tesla owner brags about.

Here's the thing though. Most van users don't cover 180 miles in a day. Industry data suggests the average UK van does around 50 miles daily. If that's you, electric works brilliantly. You come home, plug in, wake up to a full battery. Never visit a petrol station again. It's genuinely liberating once you trust it.

For those who need more, charging infrastructure is expanding. The E Transit Custom supports DC fast charging at up to 125 kW, meaning a 10 to 80% top up takes around 39 minutes on current models, dropping to 29 minutes with the 2026 upgrade. Ford claims you can add roughly 69 miles of range in just ten minutes at a rapid charger. That's enough to bridge most gaps in a pinch.

The problem is finding a working rapid charger when you need one. They're getting better. They're not there yet. If your business depends on reliable charging away from home, you need to plan routes carefully. Which trades and use cases actually work with electric?

Which Businesses Should Go Electric Right Now

Some operations are perfect for the E Transit Custom. Others would be a disaster. Here's the breakdown:

• Urban couriers and delivery drivers covering predictable routes under 100 miles daily with guaranteed overnight charging are ideal candidates

• Tradespeople with fixed territories such as plumbers, electricians, and gas engineers working consistent local patches can make electric work beautifully

• Businesses with depot charging where vans return to base every night and plug into dedicated chargers eliminate the public charging gamble entirely

• London based operators facing both ULEZ and Congestion Charge exposure will see payback fastest

• Companies targeting green credentials for tender submissions or customer perception get genuine marketing value from electric

Who should stick with diesel? Long distance operators regularly covering 200 plus miles in a day without reliable charging stops. Rural trades covering massive geographic areas. Anyone without access to home or depot charging. And honestly, anyone who can't stomach the upfront cost premium right now, even if the numbers eventually work out.

The payload penalty matters too. The E Transit Custom tops out at 1,088 kg payload in Trend spec, dropping as you move up trim levels. The diesel manages up to 1,384 kg. That's nearly 300 kg difference. For a builder shifting heavy materials, that gap could mean an extra trip per day. For a florist delivering bouquets, it's irrelevant.

The 2026 Upgrades Change the Calculation

Ford's announced improvements arriving in early 2026 genuinely shift things. The 71 kWh battery pushing range to 232 miles addresses the primary objection most buyers have. Faster charging (29 minutes for 10 to 80% versus 39 minutes currently) makes mid journey top ups more practical. And existing E Transit Custom owners get an over the air update reducing their charging times too, which is a nice touch.

Perhaps more significantly, Ford is introducing an all wheel drive option for the first time. This adds a front motor to complement the standard rear drive unit, with torque shifting between axles depending on grip. If you're working construction sites, farm tracks, or just battling through a British winter, that could be transformative. Towing capacity jumps to 2.3 tonnes and torque hits 630 Nm, making the AWD electric Custom surprisingly capable.

Pricing for the upgraded models hasn't been confirmed yet. Expect a modest premium over current figures. But if you're making a decision in 2026 rather than today, the electric case strengthens considerably.

The Verdict: When Does Electric Actually Make Sense?

There's no universal answer. Anyone who tells you otherwise is selling something. But here's my honest take after digging through the numbers and speaking to people actually living with both options.

If you operate primarily within the M25, cover under 100 miles daily, have access to reliable charging, and plan to keep your van for four years or more, the E Transit Custom will almost certainly cost you less overall despite the higher purchase price. The ULEZ exemption alone is worth thousands annually, and fuel savings compound over time.

If you're working nationwide routes, can't guarantee charging access, need maximum payload capacity, or simply don't have £13,000 extra in capital to deploy right now, the diesel remains the pragmatic choice. It's not the future, but it's the present, and sometimes the present is what pays the bills.

The middle ground is where it gets interesting. Businesses buying a second or third van for urban work while keeping diesels for longer runs. Operators dipping a toe in with one electric vehicle before committing further. Fleet managers splitting their orders 70/30 diesel to electric and adjusting as infrastructure improves.

If you're weighing up your options and fancy seeing what's available right now, there's a solid selection of Ford Transit Custom for sale that covers both powertrains and plenty of specs. Whether you end up going electric or sticking with diesel, the Transit Custom platform is genuinely excellent. Ford got the fundamentals right. The choice of how to power it is yours.