How to Start a Mobile Mechanic Business in the UK

Mobile mechanic work is in growing demand. People are busy, garage waiting lists can be long, and the convenience of having a mechanic come to your home or workplace is a strong selling point. If you have the skills and experience, starting a mobile mechanic business is a practical and profitable move.

Qualifications

While there is no legal requirement to hold a qualification to work as a mechanic in the UK (outside of MOT testing), professional credentials are essential for credibility:

• IMI (Institute of the Motor Industry) qualifications — Level 2 or 3 in Light Vehicle Maintenance and Repair
• City & Guilds in motor vehicle engineering
• NVQ Level 2 or 3 in vehicle maintenance
• Manufacturer-specific training — for specialist brands
• ATA (Automotive Technician Accreditation) — demonstrates competence and ongoing professional development

MOT Testing

If you want to carry out MOT tests, you need to be a nominated tester at an authorised testing station and hold the relevant DVSA-approved qualifications. This is not possible as a mobile-only mechanic — you would need access to an MOT-approved workshop.

What Services Can You Offer Mobile?

Mobile mechanics can handle a wide range of work:

• Servicing — oil changes, filter replacements, fluid top-ups
• Brake repairs — pads, discs, fluid changes
• Battery replacement
• Diagnostics — with portable OBD scanners
• Clutch repair — depending on the vehicle and your setup
• Timing belt replacement
• Suspension work
• Electrical diagnostics and repair
• Pre-purchase inspections
• Breakdown repair

Some work — such as tyre fitting, air conditioning regas, or major engine work — is difficult or impractical without a workshop. Know your limits and refer work that requires specialist facilities.

Sole Trader or Limited Company?

Most mobile mechanics start as sole traders. Simple structure, low admin, and suits the business model. A limited company can be considered later if profits grow.

Registering with HMRC

Register for Self Assessment within three months. VAT at £90,000 — mobile mechanics with a busy schedule and commercial fleet work can approach this threshold.

Insurance

• Public liability — essential. Covers damage to customer vehicles or property and third-party injury. Minimum £1 million, ideally £2–5 million.
• Professional indemnity — covers claims arising from your work (e.g., misdiagnosis, incorrect repair)
• Tools and equipment insurance — your tools are your livelihood and a target for theft
• Commercial vehicle insurance — for your van
• Road risk insurance — covers you while driving customer vehicles
• Personal accident — covers income loss from injury
• Goods in transit — if you carry customer parts or vehicles

Expect £500–£1,500 per year for comprehensive cover.

Claimable Expenses

• Tools and equipment — hand tools, power tools, diagnostic equipment, jacks, axle stands, torque wrenches
• Diagnostic equipment — OBD scanners, multimeters, oscilloscopes
• Parts — if you supply parts to customers (some mechanics only fit customer-supplied parts)
• Vehicle costs — van fuel, insurance, maintenance, road tax, or mileage at 45p per mile
• Van fit-out — racking, lighting, power supply for tools
• Consumables — oil, filters, brake fluid, coolant, lubricants, cleaning products
• PPE and workwear — overalls, gloves, safety boots
• Training and qualifications — new skills, manufacturer courses, diagnostic training
• Professional memberships — IMI, ATA
• Insurance premiums
• Marketing — website, Google Ads, van livery, business cards
• Phone and communications — essential for bookings
• Waste disposal — used oil, filters, and parts must be disposed of properly
• Home office costs — for admin, quoting, and scheduling
• Accountancy fees

Accounted tracks all your expenses and matches receipts to bank transactions.

Pricing

• Basic service (oil + filter) — £80–£150
• Full service — £150–£300
• Brake pads (per axle) — £100–£200 (parts + labour)
• Brake discs and pads (per axle) — £200–£400
• Battery replacement — £100–£200
• Diagnostic scan — £30–£60
• Hourly labour rate — £40–£70 per hour
• Callout fee — £20–£40 for travel

Price competitively with local garages — your convenience factor justifies similar or slightly higher pricing.

Industry-Specific Tax Tips

Parts Markup

If you supply parts, you can mark them up and the full amount is your income. The parts cost is a deductible expense. Track parts purchases and sales carefully.

Waste Oil and Parts

You have a legal obligation to dispose of waste oil and used parts properly. The disposal costs are deductible. You must use a licensed waste carrier — keep records of all waste transfers.

Capital Allowances

Diagnostic equipment, specialist tools, and your van (if purchased) qualify for capital allowances. The Annual Investment Allowance lets you deduct the full cost in the year of purchase.

VAT on Parts

If you are VAT-registered, you charge VAT on both your labour and parts. You can reclaim VAT on parts you purchase wholesale. This makes VAT registration more beneficial for mechanics who supply parts compared to those who only supply labour.

Building Your Business

• Google My Business and local SEO — most mechanic searches are local
• Reviews — encourage every customer to leave a Google review. Trust is everything in vehicle repair.
• Social media — before-and-after repair photos, maintenance tips
• Fleet contracts — local businesses, delivery companies, taxi firms. Regular, predictable work.
• Breakdown directories — listed as a local breakdown repair service
• Partnerships — local car dealerships for overflow work, MOT stations for work they cannot do
• Word of mouth — reliability and honest pricing generate referrals

Bookkeeping Tips

• Separate business and personal finances
• Track parts purchases and sales — understand your margins
• Record all income — including cash jobs
• Keep waste disposal records
• Log mileage to every job
• Set aside 25–30% of profits for tax

Accounted connects to your bank and categorises transactions with AI. Built for UK tradespeople and sole traders.

Key Deadlines

• 31 January — Self Assessment and payment
• 31 July — second payment on account
• Quarterly — VAT returns if registered

Getting Started

Mobile mechanic work offers excellent flexibility, strong demand, and the satisfaction of solving real problems for real people. Get qualified, get insured, register with HMRC, and keep your finances running smoothly.

Ready to tune up your business finances? Sign up for Accounted and let Penny handle the bookkeeping while you keep vehicles on the road.