Online ISTACustom diagnostic solutions
01Diagnostics / fault finding
We find the cause using fault memory, live data, wiring diagrams and physical measurements — not just the fault code.
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BMW expertise • Szekszárd
We don’t just clear fault codes.We find the cause.
BMW specialist workshop. Diagnostics, inspections, maintenance and repairs — backed by measurements, photos and clear technical documentation.
Six-In-Line Kft., a BMW specialist workshop, is located near Szekszárd, in Tolna County. Alongside BMW owners from Tolna County, we welcome customers from all over Hungary.
4.8 / 570 Google reviews63 five-star reviews637
different BMWs repaired
1,803
completed work orders
9,634
billed labour hours
SIL / MSD80DEVELOPED IN-HOUSE
20 s
In-house SIL diagnostics · MSD80
Explore our diagnosticsServices
A BMW deserves more than guesswork.
Inspection, repair and verification are all part of the same professional process.
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Vehicle inspection
A comprehensive technical inspection with documented findings, photos and prioritised recommendations.
Maintenance / servicing
Maintenance to manufacturer specifications, using suitable parts and checks after every job.
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Automatic transmission servicing or overhaul
Oil changes, diagnostics, repairs and, when needed, complete overhauls of ZF automatic transmissions.
Transfer case overhaul
Targeted diagnosis, professional disassembly and overhaul of xDrive transfer cases.
Brake / suspension repair
Inspection, repair, replacement and functional checks of brake and suspension components.
Software / navigation update
Checking and updating BMW system software and navigation data, with programming where required.
Comprehensive insurance claims handling
Damage assessment, insurer coordination and documented repairs for BMWs from 2020 onwards, all in one place.
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Electronic system diagnostics
We diagnose faults in control units, vehicle networks and user interfaces using diagnostic equipment.
Interactive workshop
See what we work on.
Choose a service and we’ll show the corresponding workshop process on a BMW G81 model. The display adapts automatically to your device’s performance.
Modified 3D body model: Black Snow (@BlackSnow02); modified engine visualisation: La_Grekula. Both models are used under the CC BY 4.0 licence. The transmission and brake models are used under a separate licence granted to Six-In-Line. The model sources and licences page contains full details. The engine visualisation is not a technically accurate S58 model. Six-In-Line is an independent workshop, not an official representative of BMW AG or ZF Friedrichshafen AG.
Our approach
For us, diagnosis means establishing the evidence.
We distinguish facts, measurements, conclusions and recommendations. You receive a clear basis for technical decisions, not just a list of fault codes.
A specialist always approves the final technical findings and the documents given to the customer.
We record the symptoms
We record exactly what the customer experiences and the conditions in which the fault occurs.
We gather evidence
Diagnostics, measurements, visual checks and, if needed, documented disassembly follow.
We agree the next steps
Identified faults become a clear, itemised repair proposal. Additional work only starts after approval.
We check before handover
Repairs are followed by functional tests, a road test where needed, and a final written summary.
Developed in-house
SIL — a digital workflow built around real workshop processes.
From the appointment request through vehicle reception, diagnostics and quotation to the final documents, everything remains one connected case. No scattered messages or lost photos.
Structured customer and vehicle records
Photos and evidence linked to each case
Approvals and workflow
Consistent technical documentation
Online → workshop
Insurance claims
You report it. We handle the process.
From damage assessment and documented disassembly through insurer coordination to a checked handover. Currently available for BMW models from 2020 onwards.
Appointment and quote requests
Tell us what your car needs.
Visited us before? Choose the shorter form, describe the work needed and select your preferred day. If you would like a quote first, choose “Request a quote”; no appointment date is required.
No automatic appointment without review
We reply to quote requests within 5 working days
We always confirm the final appointment
Not ready to request an appointment yet?
SIL AI, currently in trial operation, helps gather the necessary information. This is not a live chat service.
Ask a question firstGoogle reviews
4.8 / 5
70 reviews · 63 five-star
Have you visited us? Your experience helps other BMW owners. Leave us a Google review or follow our workshop on Facebook.
Contact
Six-In-Line Kft.
Telephone+36 70 529 7731
Workshop location7143 Őcsény · near Szekszárd
FacebookBMW Szekszárd
Coverage
Customers from 114 towns and villages.
BMW owners also visit us from Southern Transdanubia and more distant towns and villages across Transdanubia.
Where our customers come from, based on our records. Select a county or Budapest to see the total customer count.
588 customers in Hungary in our records
Data as of:
- 0 customers
- 1–2
- 3–5
- 6–15
- 16–50
- 51 or more
What does the map show?
This summary of our records as of 21 September 2026 shows the registered owners of vehicles linked to work orders. Each customer code is counted once; repeat visits do not increase the count. A person may have more than one customer code; a full history of previous owners is not included.
Red localities have no customer records linked to this data snapshot. Colours show recorded customer counts, not market share. Budapest districts and areas within the same locality have been combined. A further 15 customer records from abroad are not shown on the Hungary map.
The dropdown shows county totals; Budapest is listed separately and is not included in Pest County. The map colours still show customer counts for individual localities.
The public map shows only aggregated counts per locality. Map boundaries: turistaterkepek.hu – Localities, simplified for display.