Advertising Disclosure Diagnostic Testing Measuring Tools Comparison - January 2026
7 Best Diagnostic Testing Measuring Tools In the UK
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant's customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. As an Amazon Associate we may earn from qualifying purchases. We may receive a commission from purchases made through links on our site, which will help us continue to provide you with value.
Advertising Disclosure
| 1 Best Choice  9.9Exceptional | 2  9.7Exceptional | 3  9.6Exceptional | 4  9.5Excellent | 5  9.4Excellent | 6  9.3Excellent | 7  9.2Excellent |
| View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon |
ModelLAUNCH X431 PRO3S+Elite SmartlinkC 2025 Launch Diagnostic Tool Intelligent OE Topology, 50+ Service Full System Bidirectional Car Diagnostic Tool ECU Coding, Active Test, CANFD/DOIP/J2534,2 Yrs Update | Model TOPDON Car Diagnostic Tool ArtiDiag Pro with Online-Coding and Bi-Directional Control, Full Systems Diagnosis Obd2 Scanner with 35+Maintenance Services, 2-Year Free Update, Blue | Model LAUNCH OBD2 Scanner CRP123I V3.0, 4 Systems Car Diagnostic Machine for ABS SRS Transmission Engine, OBD2 Diagnostic Tool with Oil/EPB/DPF/SAS/BAS/BMS/Throttle Reset, Battery Test, Lifetime Free Update | Model TOPDON OBD2 Code Reader Scanner ArtiDiag600S, 9 Reset Service for Oil/BMS/ABS/SAS/EPB/DPF/TPMS/Throttle/Injector Coding, ABS/SRS/Engine/Transmission Car diagnostic tool, Free Lifetime Upgrade | Model TOPDON CarPal A, OBD2 Scanner, All System Diagnosis, Wireless Bluetooth Diagnostic Tool, Vehicle Health Check, Smog Check, Repair Guide, Engine Inspection, Vehicle Performance Test | Model TOPDON Car Diagnostic Tool ArtiDiag900 Lite with BiDirectional Scan, FCA Gateway and CAN-FD, Full Systems Diagnosis with 8+ Reset Services, Wireless Bluetooth OBD2 scanner, AutoVIN, 2-Year Free Update | Model VDIAGTOOL VD30 Pro OBD2 Scanner, Car Diagnostic Tool for All Cars, Fault Code Reader for OBD II Reset, OBD Scanner Live Data, Check Engine Light Error, I/M Readiness for All OBDII Protocol Vehicles |
BrandLAUNCH | Brand TOPDON | Brand LAUNCH | Brand TOPDON | Brand TOPDON | Brand TOPDON | Brand VDIAGTOOL |
Reviews | Reviews | Reviews | Reviews  | Reviews | Reviews | Reviews |
Tech Specs | ||||||
model YZA31-A | model ArtiDiag Pro-UK | model 123I V3.0 | model TOPDON ArtiDiag600S Car Diagnostic Tool | model Carpal-A-SCEU | model ArtiDiag900 Lite | model VD30PRO |
batteries 1 AAA batteries required. included | batteries 1 Lithium Ion batteries required. (included) | batteries 1 Lithium Ion batteries required. (included) | batteries 1 Lithium Ion batteries required. included | batteries - | batteries 1 Lithium Ion batteries required. included | batteries - |
item_weight- | item_weight 805 g | item_weight 1.04 kg | item_weight - | item_weight 100 g | item_weight - | item_weight 350 g |
manufacturer_part_number- | manufacturer_part_number ArtiDiag Pro-UK | manufacturer_part_number 1 | manufacturer_part_number - | manufacturer_part_number CarPal-A | manufacturer_part_number - | manufacturer_part_number VD30 pro |
manufacturer part number YZA31-A | manufacturer part number - | manufacturer part number - | manufacturer part number ArtiDiag600S-UK | manufacturer part number - | manufacturer part number ArtiDiag900 Lite-UK | manufacturer part number - |
item weight 9.72 kg | item weight - | item weight - | item weight 630 g | item weight - | item weight 2.21 kg | item weight - |
product_dimensions- | product_dimensions 24.6 x 13.9 x 3.4 cm; 805 g | product_dimensions 26 x 18 x 8 cm; 1.04 kg | product_dimensions - | product_dimensions 5.08 x 2.54 x 8.38 cm; 100 g | product_dimensions - | product_dimensions - |
Available On | Available On | Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.9
1LAUNCHLAUNCH X431 PRO3S+Elite SmartlinkC 2025 Launch Diagnostic Tool Intelligent OE Topology, 50+ Service Full System Bidirectional Car Diagnostic Tool ECU Coding, Active Test, CANFD/DOIP/J2534,2 Yrs Update
Main highlights- 【CAN 2.0,CANFD,DoIP,J2534+V.A.G+for Gateway】LAUNCH X431 PRO3S+ELITE SmartlinkC car diagnostic tool supports CAN 2.0, CANFD, DoIP,for Renault Gateway, and other mainstream diagnostic protocols and J2534 diagnostic communication standards. And can be expanded into car diagnostic tool for commercial vehicles or new energy vehicles according to demand. note: these need pay to extend and unlock. LAUNCH X431 PRO3S+ELITE obd2 scanner supports the V.A.G guidance function for Audi and other car models, according to the fault prompts to guide the repair, brush hidden, maintenance. It's compatible with 99.9% of vehicle makes and over 100,000 vehicle models. Check the compability before purchasing.
- 【55+ Reset Services for Calibration/Initialization/Relearn】LAUNCH X431 PRO3S+ELITE SmartLinkC Diagnostic Tool can support more than 50 kinds of maintenance reset functions, so you can repair your car without any trouble. Such as A/F tuning,language setting, NOx reset, seat calibration, start/stop setting, gearbox learning, brake pad replacement, D.P.F regeneration, throttle learning,anti-theft matching, injector coding, steering angle learning, sunroof initialization, Suspension matching, etc., after careful factory testing and scene simulation to ensure the functions are available and convenient.
- 【Intelligent and Clear Topology Map】 LAUNCH X431 PRO3S+Elite SmartlinkC launch diagnostic tool Visualization of the entire vehicle system through an intuitive topology provides maximum convenience and ultra-fast speed for quick diagnosis and advanced repairs.Graphically display the various electronic control units (ECUs), sensors, actuators and the communication connection relationship between them inside the vehicle. Including the physical location of each node (ECUs), network interface, communication protocols and data transmission paths. A topology map is clear and concise, largely saving diagnostic time and improving diagnostic efficiency.
- 【Active Test/ Bi-directional Control+ Advanced ECU Coding】Personally customised to your needs, LAUNCH X431 PRO3S+ELITE SmartlinkC launch diagnostic tool perform ECU Coding and Bi-directional Control, easily reading data from the vehicle with the touch of a finger, as well as being able to send commands to the vehicle to change the behaviour or parameter settings of the ECU. Launch X431 PRO3S+ELITE SmartlinkC car diagnostic tool enables in-depth testing and adjustment of vehicle systems without dismantling or physically touching the components, such as unlocking hidden features, writing VINs to new ECUs, recoding car replacement parts, and more,improving diagnostic efficiency and accuracy.
- 【 J2534 Coding smartlinkC + OE Full System】LAUNCH X431 PRO3S+ ELITE Scan Tool with updated smartlinkC V2.0, a communication interface that supports the ECU J2534 coding specification. It can also be used as a J2534 code pass-through device to perform J2534 coding in conjunction with a PC with OEM diagnostic software installed. it can supports 24V commerical vehicles but need pay to extend. LAUNCH X431 PRO3S+ELITE SmartlinkC obd2 code reader supports full-system advanced scan, codes clearing, active testing, checking real-time text/graphic/analogue data, and more. It has original factory-level vehicle testing functions, graphical display of vehicle electronic control system organisation.
-
9.7
2TOPDON
TOPDON Car Diagnostic Tool ArtiDiag Pro with Online-Coding and Bi-Directional Control, Full Systems Diagnosis Obd2 Scanner with 35+Maintenance Services, 2-Year Free Update, Blue
Why we love it
Comprehensive vehicle diagnostics and maintenance.
Wide compatibility with popular car brands.
User-friendly with quick fault code clearing.
Main highlights- WIDE COMPATIBILITY: this OBD2 code reader works on most US-based cars since 1996, EU-based cars after 2000, and Asian-based cars after 2008, it comes with a 2-year warranty for product quality issues. The product supports 10 languages for user convenience. *Support CAN FD and DOIP*.
- SMART DIAGNOSTIC SCANNER: AutoVin functionality can automatically identify vehicle information to diagnose and repair vehicles faster. One-click to quickly detect and clear fault codes in all systems of the vehicle. This scan tool offers a feedback function. Customers can select the corresponding types of issues they are having and get professional assistance via phone or email at anytime.
- RELIABLE CUSTOMER SUPPORT: TOPDON offers customers a 2-year free software update and 1-year warranty, ensuring full utilization of product features. Our hotline provides 24-hour technical support for prompt problem resolution at support@topdon.com.
- BI-DIRECTIONAL SCAN TOOL: The ArtiDiag Pro car scanner provides exclusive access to vehicle-specific subsystems and component parts. This allows users to analyze and locate faulty parts accurately, including fuel injectors, coolant pumps, windows, wipers, and more.
- ALL SYSTEM DIAGNOSTICS: TOPDON ArtiDiag Pro performs OE-level diagnosis of all systems, including engine, transmission, airbag, ABS, TPMS, and more for 100+ brands. It supports essential functions like reading ECU info, clearing fault codes, and reading data streams.
- 35+ MAINTENANCE SERVICES: TOPDON ArtiDiag Pro car diagnostic tool meets all your needs with 35+ maintenance services, including Oil Reset, EPB Reset, SAS Reset, and BMS Reset. It supports popular vehicle makes like VW, GM, BMW, PORSCHE, MERCEDES-BENZ, and many more. Manage your repair jobs effectively without outsourcing.
-
9.6
3LAUNCH
LAUNCH OBD2 Scanner CRP123I V3.0, 4 Systems Car Diagnostic Machine for ABS SRS Transmission Engine, OBD2 Diagnostic Tool with Oil/EPB/DPF/SAS/BAS/BMS/Throttle Reset, Battery Test, Lifetime Free Update
Why we love it
Supports multiple vehicle systems.
Offers lifetime free updates.
User-friendly with a touch screen.
Main highlights- 【7 Professional Reset Service Scanner】: LAUNCH CRP123I V3.0 car code reader provides 7 practical maintenance and replacement services, which include Brake Reset, Oil Reset, DPF Regen, SAS Reset, BAS Bleeding, Electric Throttle Relearn, Battery Reset. These features can help you reset, calibrate, or match relevant information after you repair or replace parts. It will save you time and money, and greatly meet the needs of home daily maintenance inspection and DIY car owners.
- 【Lifetime Fr-ee Update & Lifetime Warr-anty】: LAUNCH CRP123I V3.0 fault code reader come with lifetime fr-ee update, so you can update the car scanner tool to the newest version without extra money. Besides, our products have lifetime warranty, here is a 24/7 professional service team here, which will help you to solve questions before and after sales.
- 【LAUNCH CRP123I V3.0, Friendly for Personal Vehicle Owner】: LAUNCH CRP123I V3.0 obd2 scanner comes with 4 systems, 7 reset service, full OBD2 functions and battery tests, which could meet your daily diagnostic needs. Besides, One-click WiFi Update, Online Feedback, Health Report Print & Share, Auto-VIN, 2GB+32GB Storage, 6000mAh Battery, 5" touch screen operation bring much convenience.
- 【Widely Application, 99% Vehicles Coverage】: LAUNCH CRP123I V3.0 odb2 diagnostic tool supports Autoauth for FCA SGW to get access to 2018+ FCA SGW-equipped cars and is compatible with OBDII-equipped vehicles built after 1996, and it works on more than 1000+ Vehicles.It covers OBD2/ EOBD/KOBD&CAN protocols: Fit for VW, Audi, BMW, Seat, Honda, Toyota, Volvo, Jaguar, Land rover, and so on. If you are not sure whether the product is suitable for your vehicle, please contact our customer service for help.
- 【Enhanced Engine/ABS/SRS/Transmission Car Diagnostic Scanner】: LAUNCH CRP123I V3.0 obd2 diagnostic tool access 4 systems: Engine/ABS/SRS/Transmission, based on read fault code, show the vehicle information and live data stream to identify the issues, then erase the fault code after fixing the problem. It helps to keep your car in good condition all the time to ensure your driving safety.
- 【Full OBD2 Modes with Battery Function】: Built in 10 OBD2 modes, LAUNCH CRP123I V3.0 OBD2 Scanner diagnostic tool could quickly locate the part of engine system faults, determine the cause, after fixing it, it will erase the fault code. It also could show you the real-time data stream about your vehicles, help you to pass the smog test. Besides,it come with battery test function, show you the battery health status.
Our ranking system
The topchoice.co.uk Team selects top-of-the-line items from a wide selection and conducts rigorous evaluations on almost all the products available on the internet. We rank each product based on how well it matches our criteria.We can ensure that the product is well-tested with the help of our expertise, experts, and artificial intelligence technology. topchoice.co.uk requires consistent care for the products we review, ensuring that our assessments are always accurate and up to date.
Features
Our team of experts analyzes key attributes, capabilities, significance, and many more depending on the type of product to determine its effectiveness.
Consumer Reviews
We ensure an evaluation of the ratings using references all over the internet for each product. With the help of our AI technology and professional review teams, we give weight to the worth of individual user experiences.
Popularity
Popularity is an important criterion in choosing a product. Several factors contribute to the popularity of the products on our site, including prestige, relevance, reputation, news, and more.
Value for money
topchoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
Value for money
topchoice.co.uk compares product attributes to price, examines tech specs, ratings and reviews, and more.When compared to other criteria, does the pricing seem reasonable? In order to provide genuine value for money, our team must answer that question with advanced calculations.
