Compare purchase costs on a fair basis
A used diesel will often need less upfront spending than a comparable new electric van, but that comparison mixes vehicle age with powertrain. Include used electric vans in your search if they suit the job. Compare similar body sizes, ages, mileages and equipment levels, then look at condition and service history rather than assuming either fuel type represents better value.
Calculate the total cost over the period you expect to keep the van. Include purchase price, finance costs where relevant, depreciation, insurance, servicing, repairs and energy. For an electric van, add any charger installation and electrical work. Obtain insurance quotes for the actual vehicles, and ask an accountant about VAT and tax treatment rather than relying on a general claim about business savings.
Grants or other support may affect the figures, but eligibility and availability can change. Check current government guidance before building an incentive into your budget. Resale values are uncertain for both powertrains, so avoid a calculation that only works if the van achieves an optimistic sale price.
Work out running costs from your own routes
Electricity can cost less per mile than diesel when you charge at home or at a depot on a suitable tariff. Public rapid charging can substantially reduce that advantage. Use the rate you will actually pay, not an advertised domestic rate you cannot access, and allow for charging losses when estimating electricity consumption.
For diesel, use realistic fuel consumption for the vehicle and its workload. Motorway driving, urban stops, hills, roof racks and heavy loads all affect consumption. Electric vans also use more energy under demanding conditions, particularly at higher speeds or in cold weather. Neither an official range figure nor a brochure fuel figure is a reliable daily budget on its own.
Time belongs in the calculation too. Charging during an existing overnight stop is different from interrupting a working day to find a charger. Diesel refuelling is generally quicker, but an electric van that charges while parked may require fewer dedicated stops.
Leave enough range for difficult working days
Start with a record of your journeys, including the longest regular day and unexpected call-outs. A van used for local deliveries around Exeter has different requirements from one travelling between sites across Devon, Cornwall and Somerset. An electric van need not be restricted to town work, but its usable range and charging opportunities must fit the whole route.
Cold weather, cab heating, motorway speeds, hills and load can reduce electric range. Battery condition also matters when buying used. Ask what battery-health information is available and check the remaining battery warranty, including its conditions and transferability. Leave a sensible reserve rather than planning to arrive at each destination almost empty.
Diesel offers straightforward flexibility for variable distances, though a heavy load or trailer still increases fuel use. If considering electric, test a suitable van on a representative route where possible. A lightly loaded demonstration drive in mild weather tells you less than a journey resembling your busiest working day.
Check payload and towing on the exact van
Battery weight can affect payload, but it does not mean every electric van carries less than every diesel. Gross vehicle weight, battery size, body configuration and fitted equipment all influence capacity. Compare the exact derivatives rather than relying on a model name or a general claim about either powertrain.
Payload must cover occupants, tools, stock, racking and other equipment, not just the goods being delivered. Check load-space access as well as capacity: a van can have enough legal carrying weight but still be awkward for your materials. If towing is part of the job, confirm that the particular vehicle is approved and adequately rated for it.
Use the vehicle plate and manufacturer’s specification to check gross weight, axle limits and towing limits. A weighbridge check can help establish the capacity remaining in a working van. Towing can substantially reduce electric range, so assess charging access with the trailer attached. Check official guidance on licence entitlements and any operating rules that apply.
Make sure charging fits your parking arrangements
Reliable overnight charging is often the strongest practical reason to choose electric. Before buying, confirm that you can install a suitable charger, obtain any necessary permissions and have the electrical supply assessed. The van’s charging capability and the available supply must allow it to recover the energy needed before its next shift.
Without off-street parking or depot charging, examine public charging along your actual routes. Check bay size, height restrictions, access hours, connector position and whether a loaded van can park without obstructing others. Charger power alone does not tell you how quickly the vehicle will charge; its own limits and battery conditions also matter.
Have a backup for unavailable or faulty chargers. If public charging regularly means detours, queues or missed appointments, diesel may be the more workable option. If charging happens during existing breaks or overnight parking, electric becomes a stronger candidate.
Assess maintenance and emissions-zone access
Electric vans generally have fewer routine powertrain service items, but tyres, brakes, suspension and other components still need attention. Check service requirements and access to suitably qualified repairers. Diesel has an established repair network, although specialist faults can still cause delays. Service history and condition matter more than promises of a particular lifespan.
For a used diesel, check the maintenance schedule, timing-belt requirements where applicable, and the condition of emissions equipment. Repeated short journeys can be unsuitable for some diesel particulate filter systems. For either powertrain, an independent pre-purchase assessment can help identify concerns that a brief test drive may miss.
If work takes you into emissions zones, check the registration through the relevant official checker. Euro 6 diesel vans generally meet the emissions standard for many UK charging zones, but registration date alone is not proof. Electric vehicles may still face congestion, parking or other charges. Check the rules for each destination before buying.
Shortlist exact vehicles, price their ownership costs and check them against your hardest regular day. Electric is worth considering with dependable charging and sufficient range; used diesel remains a practical option when distance, towing or unpredictable work makes charging difficult.