About Abacus Diagnostics

Abacus Diagnostics is a leading provider of digital mileage correction and vehicle diagnostic services. Based in Marks Tey, Essex, we operate a comprehensive mobile service covering London, Essex, Kent, Surrey, and nationwide.

We started off just providing mileage correction services. We now cover ECU remapping, Car locksmith, Diagnostics and loads of electronics work. Abacus Diagnostics is an up and coming company and we keep adding more and more vehicles to our coverage list.

Our Experience

With many years experience in mileage adjustments and odometer recalibration, we have built a reputation for delivering an exceptional, professional service. Our technicians are fully qualified and experienced vehicle electronic experts who use the latest 2025 equipment.

Why Choose Us?

• Experienced, fully qualified technicians
• Latest digital odometer recalibration equipment
• Mobile service — we come to you
• Available 24/7
• All work fully guaranteed
• Competitive pricing
• Coverage of more car manufactures than our competitors
• Professional, friendly service

High Standards

We pride ourselves on our very high standards at Abacus. We take extreme care when handling dashboards and clusters. We use seat covers and specialist factory tools for dash removal and data repairs when necessary. Our technicians are immaculately presented and very helpful.

Our Services

• Digital Mileage Correction / Odometer Recalibration
• Speedo Correction Digital Display Reset
• Vehicle Diagnostics
• ECU Remapping
• Air Bag & Service/Light Reset
• TV Unlocking
• Key / Immobiliser Resetting
• Vehicle Tracker Installation (S5 & S7)
• Auto Locksmith Services