Choosing between LG and Xiaomi is not just a brand issue, but a balance between Korean engineering and Chinese innovation. Both brands offer models with laser navigation, wet cleaning and smart home support, but the approaches to implementing the features are radically different. For example, LG is betting on suction power (up to 4,000 Pa in flagships) and advanced brushes, while Xiaomi focuses on mapping accuracy and integration with the Mi Home ecosystem.
In this article, we will analyze 10 key aspects — from carpet cleaning quality to noise level — to help you decide.Compare the flagship models: LG CordZero ThinQ A9 Kompressor vs Xiaomi Mi Robot Vacuum-Mop 2 Ultra, as well as budget options like LG VR65702VM and Xiaomi Mi Robot Vacuum-Mop 2 Lite. Particular attention will be paid to hidden “underwater rocks” that manufacturers are silent about: for example, why LG robots can cope with angles worse, and Xiaomi – high-por.
1. Navigation technologies: laser vs camera + gyroscope
The navigation system determines how effectively the robot will bypass obstacles and cover the area. LDS-laser (in models of the Mi Robot Vacuum-Mop 2 series and above), which builds an accurate map of the room with an error of up to 1 cm Laser rangefinder rotates at a speed of 360 rpm, scanning the space within a radius of 8 meters. This allows the robot to remember the location of furniture and optimize the route during repeated cleaning.
LG has a different approach: top-end models (like the CordZero ThinQ A9) use a camera + gyroscope with AI Camera Vision technology. The camera analyzes the room in real time, recognizing objects (like shoes or wires) and adjusting the route. The advantage is better recognition of transparent obstacles (glass tables), but the minus is dependence on lighting. In the dark, accuracy drops by 20-30%.
- 🔹 Xiaomi: laser works in any conditions, but can "blind" in the sun (reflected rays knock down sensors).
- 🔹 LG: The camera can recognize small objects more accurately, but requires good lighting.
- 🔹 Both brands support zoning (room cleaning), but Xiaomi has a more flexible implementation – you can set up to 10 virtual walls.
2. Suction power and cleaning quality
Here LG is objectively in the lead: flagship models are equipped with engines with suction power up to 4000 Pa (for example, LG CordZero ThinQ A9 Kompressor). For comparison, even the top Xiaomi Mi Robot Vacuum-Mop 2 Ultra delivers a maximum of 4000 Pa, but in real tests it shows results 10-15% worse due to less optimized aerodynamics of the air channel.
The main difference is manifested on carpets with high pile:
LG uses Power Brush, a rubber blade brush that penetrates deeper into the pile and pulls out dust.
Xiaomi in most models puts a classic V-shaped brush, which is worse cope with the hair and fur of animals (clogged faster).
| Parameter | LG CordZero ThinQ A9 | Xiaomi Mi Robot Vacuum-Mop 2 Ultra |
|---|---|---|
| Max. suction power. | 4000 Pa | 4000 Pa |
| Type of brush | Power Brush (rubber + bristles) | V-shaped (bristles) |
| Wool cleaning (50g test) | 98% for 1 pass | 85% for 1 pass |
| Noise at max power | 72 dB | 68 dB |
⚠️ Note: If you have long-haired animals at home, look for a model. LG VR65702VM — It has a special Pet Hair Care mode that automatically increases power when it detects wool.
3. Wet cleaning: technology and efficiency
Wet cleaning is a weak point for most robot vacuum cleaners, but here Xiaomi has taken a leap forward with Sonic Mop technology (in Mi Robot Vacuum-Mop models). 2 Ultra and higher. The rag vibrates at frequency. 10 000 It's a fluctuation per minute, which allows you to wash even dried stains (for example, from coffee or juice — 300 sml, what's the point 120-150 ².
LG’s hybrid models (e.g. the CordZero ThinQ A9) use electronic water control, but without vibration.
Xiaomi is better at washing tiles and laminate (25-30% more effective in tests).
LG is more careful with parquet (less risk of overmoisturization).
How to check the quality of wet cleaning before buying?
- 💧 Xiaomi Mi Robot Vacuum-Mop 2 Ultra: vibrating cloth, 300 ml tank, automatic washing of cloth.
- 💧 LG CordZero ThinQ A9: static cloth, 200 ml tank, manual cleaning.
- 💧 Both brands support intensity modes (light/deep cleaning), but Xiaomi has more flexible settings.
Autonomy and working hours
The battery capacity of both brands is approximately the same (5200 mAh for Xiaomi vs 5000 mAh for LG), but the operating time differs due to software optimization:
Xiaomi Mi Robot Vacuum-Mop 2 Ultra on one charge removes up to 180 m2 (in mixed mode dry + wet cleaning).
The LG CordZero ThinQ A9 covers up to 140 m2 due to its more energy-consuming camera.
The key difference is the return to the base and recharging:
Xiaomi resumes cleaning from the same place after recharging (accuracy ± 5 cm).
LG in some models (e.g. VR65702VM) can forget the stop point and start over.
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If the robot often does not reach the base, check the location of the station: it should stand on a flat surface, 1.5 m from the walls and away from heat sources (for example, batteries).
5.Smart Functions and Ecosystem Integration
Both brands support management through the app, voice assistants (Alice, Google Assistant, Siri) and geofences.
Xiaomi is more integrated with Mi Home: you can create automation (for example, start cleaning when leaving home by geolocation).
LG offers ThinQ AI, which analyzes user habits and suggests optimal cleaning schedules.
LG’s voice control is better: the robot understands commands in Russian without an internet connection (e.g., “Clean up in the living room”), and Xiaomi requires a cloud service to do this, which can cause delays of up to 2-3 seconds.
Connecting the robot to Wi-Fi 5 GHz (2.4 GHz can slow down)|Update the firmware to the latest version|Create a map of the room in manual mode|Set up geofences for forbidden places|Check compatibility with your voice assistant-->
6.Noise level and comfort of use
Noise is a critical parameter if you plan to clean at night or while your baby is sleeping.
Xiaomi Mi Robot Vacuum-Mop 2 Ultra: 65-68 dB (comparable to the refrigerator).
LG CordZero ThinQ A9: 70-72 dB (as a low-volume vacuum cleaner).
The difference is due to the design of the engine: Xiaomi uses a brushless engine with less vibrations, and Xiaomi models have Quiet Mode (55 dB), but the suction power drops to 1500 Pa.
⚠️ Note: If you live in an apartment with thin walls, pay attention to the model Xiaomi Mi Robot Vacuum-Mop 2 Lite – it is quieter flagship versions (max. 63 dB), but weaker copes with carpets.
Price and price-quality ratio
The cost of robot vacuum cleaners varies from 20 000 to 80 000 rubles. Here are the current price ranges (for June 2026):
- Xiaomi Mi Robot Vacuum-Mop 2 Lite (~22 000 ₽) vs LG VR65702VM (~25 000 ₽).
- Xiaomi Mi Robot Vacuum-Mop 2 Ultra (~65 000 ₽) vs LG CordZero ThinQ A9 Kompressor (~75 000 ₽).
In terms of price-quality, the leadership for Xiaomi:
In the budget segment, Xiaomi offers laser navigation, while LG offers only a gyroscope.
- In the premium segment, the difference in price is 10 000 ₽ Xiaomi is not inferior in power, but wins in wet cleaning and noise level.
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If the budget is limited to 30,000 ₽, Choose Xiaomi Mi Robot Vacuum-Mop 2 Lite - this is the best balance for the price. LG VR65702VM (better picks up the wool).
8.Service and warranty: what to do in case of breakdown
The warranty period for both brands is 12 months, but there are differences in service:
Xiaomi has a wide network of service centers (more than 200 in Russia), but spare parts often have to wait 2-3 weeks.
LG offers an extended warranty of up to 24 months when registering on the site, as well as faster diagnosis (average 3-5 days).
Frequent breakdowns:
Xiaomi: failure of the laser rangefinder (after 2-3 years of operation), problems with the water tank.
LG: Wearing brushes (requires replacement every 6-8 months), camera failures in poor lighting conditions.
- 🔧 Xiaomi: parts are cheaper (for example, side brush – 300) ₽ vs 800 ₽ bal LG).
- 🔧 LG: Original batteries last longer (1000 cycles vs 600 on Xiaomi).
- 🔧 Both brands offer self-diagnosis through the app (error codes and instructions).