BYD Song PLUS DM-i vs Geely Galaxy L7: Which Should Family Car Buyers Choose?

jiasou 90 2025-11-21 16:49:27 编辑

With a budget of 150,000-200,000 RMB, you want a plug-in hybrid SUV that’s fuel-efficient for daily commuting and spacious enough for the whole family’s travels? This is almost the core demand of most family car buyers today. And the BYD Song PLUS DM-i and Geely Galaxy L7 are precisely the "star players" in this price segment — the former is a "plug-in hybrid benchmark" with cumulative sales exceeding 1 million units, while the latter is a "performance dark horse" that has emerged later. Both have their own advantages, and the car-buying dilemma follows. This article will help you thoroughly clarify the selection logic with real data and test results from core dimensions such as power, space, configuration, and car ownership costs!😊

I. Quick Overview: Core Differences at a Glance

Comparison Dimension BYD Song PLUS DM-i Geely Galaxy L7
Power System DM-i Super Hybrid (series-dominated, focusing on smoothness and fuel efficiency) Raytheon Electric Hybrid 8848 (3-speed DHT Pro, balancing performance and efficiency)
WLTC Fuel Consumption (Official, Without Battery Power) 4.5L/100km 4.8L/100km
0-100km/h Acceleration (Official) Approximately 8.3 seconds (110km range version) Approximately 6.9 seconds (115km range version)👍
Starting Price 129,800 RMB (51km Luxury Edition) 125,700 RMB (55km Pro Edition)
Body Dimensions 4705×1890×1680mm 4700×1905×1685mm
Wheelbase 2765mm 2785mm
Pure Electric Range (CLTC) 51km/110km 55km/115km
Battery Capacity 8.3kWh/18.3kWh (Blade Battery) 9.11kWh/18.7kWh (Divine Shield Battery)
Screen Features 12.8-inch rotatable central control screen (DiLink 4.0) 10.25-inch instrument panel + 13.2-inch central control + 16.2-inch passenger entertainment screen (three-screen linkage)
Warranty Policy Unlimited years/unlimited mileage for the first owner (core three-electric systems) Unlimited years/unlimited mileage for the first owner (core three-electric systems)
Suspension Structure Front MacPherson + Rear Multi-link Independent Suspension Front MacPherson + Rear Multi-link Independent Suspension

II. In-Depth Comparison: Who Understands Family Users Better?

1. Power & Energy Consumption: Smooth & Fuel-Efficient vs Passionate Performance

The power system is the core difference between the two models, directly determining the driving experience and car ownership costs.
 
The BYD Song PLUS DM-i is equipped with the DM-i Super Hybrid, whose core logic is "electricity-dominated, fuel-assisted". It adopts a combination of a 1.5L naturally aspirated engine (thermal efficiency 40.1%, an indicator of engine fuel conversion efficiency) and a permanent magnet synchronous motor. In daily driving, it mainly operates in series mode — the engine mainly acts as a "generator" to recharge the battery, and the wheels are directly driven by the motor. The advantage of this structure is excellent smoothness; there is no jerkiness like in fuel-powered cars during startup and acceleration, which is completely close to the driving experience of pure electric vehicles, making it particularly suitable for urban congested road conditions👍.
 
The highlight of the Geely Galaxy L7’s Raytheon Electric Hybrid 8848 is the world’s first 3-speed DHT Pro gearbox. It also uses a combination of a 1.5T turbocharged engine (thermal efficiency 43.32%) and an electric motor, but through the three-speed transmission structure, it can intelligently switch between four modes: pure electric, series, parallel, and engine direct drive. At low speeds, similar to the DM-i, it is dominated by electric drive to ensure smoothness; during high-speed cruising, the engine can directly drive the wheels, avoiding energy waste caused by high-speed operation of the motor; during sudden acceleration, the engine and electric motor work together. The 0-100km/h acceleration time of 6.9 seconds is 1.4 seconds faster than the Song PLUS DM-i, making overtaking on the highway more confident⚠️.
 
In terms of energy consumption, official data shows that the Song PLUS DM-i has a fuel consumption of 4.5L/100km without battery power, slightly lower than the Galaxy L7’s 4.8L/100km. Referring to test data from Dongchedi (a leading Chinese auto media): in urban commuting scenarios, the actual fuel consumption of the Song PLUS DM-i without battery power is about 5.2L/100km, and the Galaxy L7 is about 5.5L/100km; during high-speed cruising (120km/h), the fuel consumption of the Song PLUS DM-i is about 6.8L/100km, while the Galaxy L7’s fuel consumption is narrowed to 6.7L/100km due to the direct drive mode.
 
Calculation of car ownership costs (based on annual driving of 15,000km): If there are charging conditions, 80% of driving is pure electric (electricity price 0.6 RMB/kWh) and 20% is without battery power (fuel price 8 RMB/L). The annual cost of the Song PLUS DM-i (110km range version) is approximately 1500×0.8×(18.3kWh/110km)×0.6 + 1500×0.2×5.2L/100km×8 ≈ 1180 RMB; the annual cost of the Galaxy L7 (115km range version) is approximately 1500×0.8×(18.7kWh/115km)×0.6 + 1500×0.2×5.5L/100km×8 ≈ 1250 RMB. Without charging conditions, the annual cost of the Song PLUS DM-i is about 1500×5.2×8÷100=6240 RMB, and the Galaxy L7 is about 1500×5.5×8÷100=6600 RMB. Overall, the Song PLUS DM-i’s energy consumption advantage is concentrated in urban scenarios without charging.

2. Design & Interior: Classic & Timeless vs High-Tech & Trendy

Exterior design is a matter of taste, but the style differences between the two models are obvious, directly corresponding to the aesthetic preferences of different families.
 
The Song PLUS DM-i adopts BYD’s family-style Dragon Face 3.0 design, with a large hexagonal grille matched with chrome trim, rounded and full body lines, through-type taillights and hidden exhaust at the rear, presenting an overall stable and atmospheric style. The advantage of this design is that it is "timeless and not outdated", acceptable to both young people and elders, and there will be no aesthetic differences when used as the family’s only car😊.
 
The Geely Galaxy L7 takes a "high-tech and trendy" route, adopting the "Galaxy Light" design language, with split LED headlights + slender daytime running lights, making the front face highly recognizable; the side of the body has a 溜背 shape with a suspended roof, and the rear has through-type taillights + diffuser decoration, with a stronger sense of movement. The body colors are also more youthful, offering trendy colors such as "Starship Gray" and "Galaxy White", suitable for young families pursuing personality and freshness.
 
In terms of interior, the layout of the Song PLUS DM-i is simple and practical. The center console is wrapped in soft 搪塑 and leather, with a solid texture; the 12.8-inch rotatable central control screen is the core highlight — it is suitable for navigation and short videos when vertical, and for watching movies when horizontal, adapting to different usage scenarios. The air conditioning control panel uses physical buttons, which are more convenient for blind operation, meeting the "practicality first" demand of family users.
 
The interior of the Galaxy L7 focuses on the "high-tech cockpit" concept. The three-screen linkage (instrument panel + central control + passenger entertainment screen) is the biggest selling point. The 16.2-inch passenger screen supports independent video playback and gaming, allowing passengers in the front passenger seat (especially children) to pass the time during long trips. The center console adopts a layered design, matched with blue ambient lights and metal trim, full of high-tech sense. However, it should be noted that the air conditioning control of the Galaxy L7 is integrated into the central control screen without physical buttons, making operation less convenient than the Song PLUS DM-i when driving⚠️.
 
In terms of details, both models focus on family practicality: the door storage compartment of the Song PLUS DM-i can hold a 500ml mineral water bottle + an umbrella, and the armrest box has a depth of 20cm; the front cup holders of the Galaxy L7 have heating/cooling functions, and the rear is equipped with independent air conditioning vents, each with thoughtful features.

3. Space & Comfort: Family-Sized Space Showdown

Space is a "hard indicator" for family cars. The body sizes of the two models are similar, but their actual performance focuses on different aspects.
 
In terms of wheelbase, the Galaxy L7’s 2785mm is 20mm longer than the Song PLUS DM-i’s 2765mm, which is directly reflected in the rear legroom. Our test: a passenger with a height of 175cm sits in the rear: the Song PLUS DM-i has about two fists of rear legroom and one fist and two fingers of headroom; the Galaxy L7 has about two fists and three fingers of rear legroom and one fist and one finger of headroom. Both can meet the needs of full-load riding, but the Galaxy L7’s legroom is more spacious, making long-term riding more comfortable👍.
 
The trunk space is the advantage of the Song PLUS DM-i: the regular volume is 574L, which can easily hold 2 28-inch suitcases + 1 stroller; when the rear seats are folded down, the volume expands to 1600L, and even large items such as bicycles and camping equipment can be placed. The regular trunk volume of the Galaxy L7 is 520L, slightly smaller than the Song PLUS DM-i, but it can reach 1680L when the rear seats are folded down, with stronger expandability, suitable for families who often transport large items.
 
In terms of comfort configuration, the mid-to-high configuration models of both cars are equipped with electric adjustment of the main driver’s seat, seat heating, panoramic sunroof and other functions. The seat filler of the Song PLUS DM-i is softer, and the seat cushion length is about 50cm, providing better support for the thighs; the seat wrapping of the Galaxy L7 is stronger, with obvious side wing protrusions, suitable for users who like a sporty style, but may feel slightly tight during long-term riding.
 
In terms of suspension tuning, the Song PLUS DM-i tends to be comfortable. When passing speed bumps or potholed roads, it can effectively filter bumps, and the vibration inside the car is small; the suspension tuning of the Galaxy L7 is more sporty, with better support, and less body roll when cornering, but it sacrifices part of the shock absorption effect, and the vibration inside the car is more obvious than the Song PLUS DM-i when passing through potholed roads.

4. Intelligent Technology: Infotainment & ADAS Experience

Intelligent configuration has become an important consideration for family cars, and the two models have their own merits in infotainment systems and advanced driver assistance systems (ADAS).
 
In terms of infotainment systems, the Song PLUS DM-i is equipped with the DiLink 4.0 intelligent connected system, developed based on Android 12, with a Snapdragon 690 chip and 8GB of running memory. Voice control supports continuous dialogue and multi-command recognition, with an accuracy rate of over 95%, and can control air conditioning, navigation, car windows and other functions. The system has built-in commonly used apps such as Amap, Douyin, and iQiyi, with a rich application ecosystem, which can be easily operated by the elderly and children.
 
The Galaxy L7 is equipped with the Galaxy N OS system, developed based on Android 11, with a Snapdragon 8155 chip (a high-end automotive-grade chip, whose computing power is 3 times that of the Snapdragon 690) and 12GB of running memory. The three-screen linkage function supports "main driver screen projection" and "independent passenger entertainment". For example, when the main driver is navigating, the passenger can watch movies at the same time without interfering with each other. Voice control supports zonal wake-up, which can accurately identify commands from the main driver and passenger, and the response speed is faster than the Song PLUS DM-i.
 
In terms of ADAS, the mid-to-high configuration models of the Song PLUS DM-i are equipped with the "DiPilot intelligent driving assistance system", which includes functions such as ACC adaptive cruise control, lane keeping, automatic emergency braking, and traffic sign recognition. In actual tests, ACC can stably follow cars in the range of 0-130km/h, and the lane keeping function has a good centering effect, which is suitable for reducing fatigue during long-distance high-speed driving, but it does not support lane change assistance, and the intelligence level is at a "sufficient" level😊.
 
The mid-to-high configuration models of the Galaxy L7 are equipped with the "Galaxy Intelligent Driving System", which in addition to basic ACC and lane keeping, also supports automatic lane change, ramp assistance, remote parking and other functions. In actual tests, it can accurately identify oncoming vehicles when changing lanes automatically, and the lane change action is smooth; the remote parking function is suitable for narrow parking spaces, and the vehicle can be controlled to enter and exit through the mobile app, which is very friendly to novice families. However, it should be noted that the Galaxy L7’s ADAS functions have high requirements for the clarity of road markings, and the performance will be compromised on rural roads or roads with blurred markings⚠️.

III. Buying Guide: Tell You Exactly How to Choose

🚗 Recommended for Users Choosing the "BYD Song PLUS DM-i":

  1. Mainly commute in the city, drive 10,000-15,000km annually, with limited charging conditions (such as no fixed parking space), and focus on extreme car ownership costs;
  2. The family car usage scenario is mainly "urban commuting + short weekend trips", with no high demand for high-speed power, and more emphasis on driving smoothness and comfort;
  3. Trust mature technology and market reputation, and tend to choose models with high sales and good residual value (data from China Automobile Dealers Association: the three-year residual value rate of the Song PLUS DM-i is about 65%, higher than the average level of the same class);
  4. The family includes the elderly, prefers a simple and practical interior design and physical buttons, and has no high demand for complex high-tech configurations;
  5. Pay attention to the regular trunk volume, often need to load strollers, shopping bags and other items, and require higher space practicality than high-tech sense.

🚀 Recommended for Users Choosing the "Geely Galaxy L7":

  1. Often commute on the highway or travel long distances by self-driving, need stronger power reserves, and hope to be more confident when overtaking;
  2. Young families (couple + 1-2 children) who like high-tech configurations, need a passenger entertainment screen to improve the riding experience, and keep children from getting bored during long trips;
  3. Limited budget but want to balance performance and configuration, pursuing "high cost-performance ratio" — the Galaxy L7 has a lower starting price, and mid-range models can be equipped with three-screen linkage, ADAS and other configurations;
  4. Have requirements for chassis support, occasionally drive on mountain roads or winding sections, and like a sporty driving experience;
  5. Have a fixed parking space for charging, can make full use of pure electric range, and often need to transport large items (such as camping equipment, home appliances), and value the expandability of the trunk.

IV. Frequently Asked Questions (FAQ)

1. Who has lower car ownership costs for urban driving?

Answer: Based on official data and test results, the Song PLUS DM-i has slightly lower car ownership costs for urban driving. Taking daily commuting of 50km and monthly driving of 1500km as an example: with charging conditions, the Song PLUS DM-i (110km range version) can drive about 90km on a full charge (actual range), requiring 17 charges per month. The electricity fee is about 17×18.3kWh×0.6 RMB/kWh≈186 RMB, no need to refuel, and the monthly cost is 186 RMB; the Galaxy L7 (115km range version) can drive about 95km on a full charge, requiring 16 charges per month. The electricity fee is about 16×18.7kWh×0.6 RMB/kWh≈179 RMB, but due to the slightly larger vehicle weight, the actual pure electric range attenuation is close to that of the Song PLUS DM-i, and the monthly cost difference is not significant. Without charging conditions, the Song PLUS DM-i consumes about 1500km×5.2L/100km=78L of fuel per month, with a fuel cost of about 78×8 RMB=624 RMB; the Galaxy L7 consumes about 1500×5.5L=82.5L of fuel per month, with a fuel cost of about 82.5×8=660 RMB, a difference of 36 RMB per month and 432 RMB per year. Overall, the Song PLUS DM-i has a weak cost advantage for urban driving, but can still save a certain amount of money for long-term use.

2. What are the differences in battery safety and technology between the two cars?

Answer: The battery technologies of both cars have undergone strict verification, and their safety is at the leading level in the industry. The BYD Song PLUS DM-i is equipped with the "Blade Battery", which uses lithium iron phosphate material and has passed the "needle penetration test" (one of the most stringent battery safety tests in the industry) — after piercing the battery pack with a steel needle, the battery has no open flame, no smoke, and the temperature is only 30-60℃, eliminating the risk of thermal runaway. In addition, the structural strength of the Blade Battery is higher, which can improve the overall safety of the vehicle body. This battery has been installed on many BYD models, with market verification of more than 5 years and no reports of large-scale safety accidents. The Geely Galaxy L7 is equipped with the "Divine Shield Battery Safety System", which adopts a "dual-cell" design of mixed ternary lithium and lithium iron phosphate, and has passed the "double five-star" safety certification of C-NCAP and C-IASI (China’s authoritative automotive safety evaluation agencies). It includes six core technologies such as "battery pack collision protection" and "thermal runaway suppression". In actual tests, the battery pack did not catch fire or explode after falling from a height of 10 meters, and could still work normally after being soaked for 30 minutes. In addition, both models are equipped with battery temperature control systems, which can adapt to extreme environments of -30℃ to 60℃, so users in northern China can buy with confidence.

3. How far can the pure electric range actually run? Is the winter attenuation serious?

Answer: The actual performance of the pure electric range is greatly affected by temperature, driving habits, and road conditions. According to test data from authoritative media such as Dongchedi and Autohome:
 
  • Normal temperature environment (20-25℃): The actual pure electric range of the Song PLUS DM-i 110km version is about 85-90km (77%-82% of the CLTC range), and the Galaxy L7 115km version is about 90-95km (78%-83% of the CLTC range), with similar performance;
  • Low winter temperature (-10℃ to 0℃): The actual pure electric range of the Song PLUS DM-i is about 60-65km (attenuation rate 32%-36%), and the Galaxy L7 is about 65-70km (attenuation rate 30%-35%). The attenuation of the Galaxy L7 is slightly smaller, benefiting from the optimization of its battery temperature control system.
 
For urban commuting, even after winter attenuation, the pure electric range of both models can meet the daily commuting needs of less than 50km, and only need to be charged once a week. If you often drive long distances in winter, it is recommended to plan charging stations in advance or switch to hybrid mode.

4. Is there a big difference in maintenance costs between the two cars? How about long-term reliability?

Answer: In terms of maintenance costs, there is not much difference between the two models, and both have long warranty policies for the three-electric systems. According to the official maintenance manuals:
 
  • BYD Song PLUS DM-i: The maintenance cycle is 7500km or 6 months. The cost of minor maintenance (replacing engine oil and oil filter) is about 500 RMB, and the cost of major maintenance (replacing engine oil, oil filter, air filter, and air conditioning filter) is about 800 RMB. Driving 15,000km a year requires 2 maintenances, with an annual maintenance cost of about 1300 RMB;
  • Geely Galaxy L7: The maintenance cycle is 10,000km or 12 months. The cost of minor maintenance is about 600 RMB, and the cost of major maintenance is about 900 RMB. Driving 15,000km a year requires 1 maintenance (the first maintenance is free), with an annual maintenance cost of about 600 RMB. In the long run, the Galaxy L7 is more cost-effective.
 
In terms of reliability, the Song PLUS DM-i has been on the market for more than 3 years with cumulative sales exceeding 1 million units. Data from Chezhiwang (a Chinese automotive quality complaint platform) shows that its complaint volume is low, mainly focusing on minor issues such as "infotainment system lag" and "average noise insulation", and there are no large-scale quality complaints about the three-electric system; the Galaxy L7 has been on the market for about 2 years with cumulative sales exceeding 300,000 units, and the complaint volume is also low. The main complaints are "passenger screen crash" and "occasional failure of ADAS functions", which most have been resolved by the manufacturer through OTA upgrades. Overall, the reliability of both models can meet the needs of family users, and the three-electric systems provide unlimited years/unlimited mileage warranty for the first owner, making long-term car ownership more assured.

5. Which one performs more stably and comfortably during long-distance self-driving?

Answer: During long-distance self-driving, both models have their own advantages, and you can choose according to your own needs:
 
  • Power reserves: The Galaxy L7 is more advantageous. The 0-100km/h acceleration time of 6.9 seconds makes overtaking on the highway easier. In the direct drive mode of the 3-speed DHT Pro, the engine speed is only about 2200 rpm when cruising at 120km/h, with lower noise and fuel consumption; although the acceleration of the Song PLUS DM-i is slower, it is sufficient for daily use, and the smoothness in series mode is better, making long-distance driving less tiring;
  • Comfort: The seats of the Song PLUS DM-i are softer, the suspension shock absorption effect is better, making long-term riding more comfortable, and the regular trunk volume is larger, making it more convenient to load luggage; the passenger entertainment screen of the Galaxy L7 can improve the passenger experience, and the ADAS functions are more abundant, which can reduce the driver’s burden during long-distance driving, but the suspension is stiffer, and the vibration is more obvious when passing through potholed roads;
  • Range capability: The comprehensive range (CLTC) of the Song PLUS DM-i is about 1200km, and the Galaxy L7 is about 1370km. Both can meet long-distance travel of more than 500km in a single trip without frequent refueling/charging.
 
If long-distance self-driving is "comfort-oriented with occasional overtaking", choose the Song PLUS DM-i; if you often overtake on the highway and need ADAS to reduce fatigue, choose the Galaxy L7.
 
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标签： BYD Geely SUV Technology Buying Guide ADAS Comparison
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