Land Rover Defender
Defender 90 and 110 conversion engineering, from complete vehicle integration to focused support for battery, charging and control systems.
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Specialist vehicle engineering
EV Conversions &
Specialist Vehicle Engineering
VASS engineers complete and part-built EV projects, high-voltage systems, wiring and diagnostics for classic and specialist vehicles.Core expertise
Focused support for the systems that make a specialist vehicle work properly.
From a complete classic conversion to one defined integration or diagnostic package, VASS approaches the vehicle as one connected system.
EV Conversions
Complete and partial conversion support for classics and specialist vehicles.
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High-Voltage EV Systems
Safe, serviceable architecture covering protection, isolation, routing and controls.
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EV Diagnostics & CAN Bus
Structured fault finding across BMS, inverter, charging, controls and communications.
Explore service →Vehicles & project types
Classic platforms. Bespoke engineering.
Established conversion experience alongside project-led support for restoration shops, specialist vehicle builders and private clients.
Classic Mini
Compact EV packaging and whole-vehicle integration developed around the Mini’s size, balance and original character.
Explore Mini conversions →Fiat & SEAT 600
A development platform exploring compact, serviceable electrification for Fiat and SEAT 600 projects—not a finished production kit.
Discuss a 600 project →Bespoke development
Engineering support for unusual vehicles, specialist builders and projects that do not fit an off-the-shelf conversion package.
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Why VASS
Engineering-led support for vehicles that need more than a generic kit.
One practical partner across electrical, mechanical and control-system decisions.
Real EV conversion experience
Decisions grounded in complete vehicles, packaging constraints and road use.
Connected-system knowledge
High voltage, CAN, wiring and mechanical integration considered together.
Support that fits the project
Focused help for workshops and private clients, from one fault to a full build.
Engineering, not kit fitting
Clear problem solving for unusual vehicles, incomplete builds and bespoke requirements.
Clear project communication
Defined scope, honest next steps and practical support throughout the work.
Technical journal
Useful thinking from the workshop.
Classic Car EV Conversion Safety: High Voltage, BMS, Isolation and IVA Considerations
A practical safety guide for owners considering a classic EV conversion, covering high voltage, BMS, isolation, contactors, diagnostics and approval considerations.
Read article →Classic Car EV Conversion Cost UK: What Owners Should Budget For
A practical guide to the real cost drivers behind a UK classic car EV conversion, written for owners who want a reliable, safe and usable result.
Read article →What Goes Wrong in Poorly Built EV Conversions?
A diagnostic-focused article for owners and workshops dealing with unfinished, unreliable or badly integrated EV conversions.
Read article →
Workshop & development support
Engineering support behind your customer project.
VASS works with restoration workshops, restomod builders and specialist vehicle teams that need EV systems expertise without handing over the complete vehicle programme.
- Feasibility, architecture and component review
- Battery, high-voltage, controls and CAN integration
- Diagnostics, commissioning and part-built project recovery
Start a conversation
Ready to discuss your vehicle?
Tell VASS what you are building, which parts are already in place and where the project needs support. We will help define a realistic next step.