BYD Song PLUS DM-i vs Geely Galaxy L7: Which One Should Families Buy Without Regret?

jiasou 9 2025-11-24 09:51:53 编辑

With a budget of 150,000-200,000 RMB, are you looking for a plug-in hybrid SUV that can meet daily commuting, family trips, and save fuel and money? This is almost the core demand for most family car purchases nowadays. And the BYD Song PLUS DM-i and Geely Galaxy L7 are exactly the "top-tier competitors" in this price range — the former is a "benchmark" model with cumulative sales exceeding 1 million units, while the latter is a "powerhouse" that has caught up with its 3-speed DHT technology.

Which one has lower fuel consumption and more practical space? Which one's power is more suitable for family needs? Which one offers better value for money in configuration? This in-depth comparative review starts from the actual car usage scenarios of family users, speaks with data, compares details, and helps you completely solve "decision paralysis" 😊.

I. Quick Overview: Key Differences at a Glance

Comparison Dimension	BYD Song PLUS DM-i	Geely Galaxy L7
Powertrain	DM-i Super Hybrid (1.5L naturally aspirated + single/dual motors, focusing on smooth electric drive)	Raytheon Electric Hybrid 8848 (1.5T turbocharged + dual motors + 3-speed DHT Pro, performance-oriented)
Fuel Consumption at Low Battery	4.4L/100km (official, 110km range version)	4.8L/100km (official, 115km range version)
0-100km/h Acceleration	Approximately 8.3 seconds (110km 4WD version)	Approximately 6.9 seconds (115km top trim) 👍
Starting Price	129,800 RMB (55km Luxury Edition)	125,700 RMB (55km PRO)
Pure Electric Range (CLTC)	55km/110km	55km/115km
Battery Type	Lithium iron phosphate "Blade Battery" (outstanding safety)	Lithium iron phosphate "Aegis Battery Safety System" (focusing on protection performance)
Wheelbase	2765mm	2785mm (space advantage) 👍
Screen Feature	12.8-inch rotatable central control screen (supports DiLink 4.0 system)	10.25-inch instrument panel + 13.2-inch central control + 16.2-inch passenger entertainment screen (three-screen linkage)
ADAS Features	Basic L2 level (ACC + Lane Keeping, enhanced version optional on high trims)	Standard L2 level + BSD Blind Spot Detection (standard on some versions)
Warranty Policy	Lifetime warranty for three-electric system (first owner, limited year/mileage)	Lifetime warranty for three-electric system (first owner, no mileage limit)
Suspension Structure	Front MacPherson + Rear Multi-link (comfort-tuned)	Front MacPherson + Rear Multi-link (sport-tuned)

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

1. Power and Energy Consumption: Smooth & Fuel-Saving vs. Dynamic Performance

For family users, power is not "the faster the better" but "sufficient and smooth"; energy consumption is directly related to long-term car usage costs and is a core consideration.

First, let's look at the essential difference in powertrain architecture: the DM-i Super Hybrid of the Song PLUS DM-i is centered on "electricity as the mainstay". The 1.5L naturally aspirated engine mainly acts as a "generator" and only directly drives the wheels during high-speed cruising. Therefore, the daily driving smoothness is close to that of a pure electric vehicle, with no shift shock 😌.

In contrast, the Raytheon Electric Hybrid 8848 of the Galaxy L7 adopts a "fuel-electric synergy" logic — equipped with a 1.5T turbocharged engine + dual motors + 3-speed DHT Pro gearbox. The engine can not only generate electricity but also switch gears to drive directly at different speeds. Combined with stronger motor power, the 0-100km/h acceleration reaches 6.9 seconds, which is 1.4 seconds faster than the Song PLUS DM-i. It has more sufficient power reserve for overtaking on highways and starting on ramps.

Regarding energy consumption performance: the official fuel consumption of the Song PLUS DM-i at low battery is 4.4L/100km, and that of the Galaxy L7 is 4.8L/100km. On the surface, the Song PLUS DM-i is more fuel-efficient, but the difference in actual usage is negligible. Let's calculate based on "10,000 km of annual driving, 80% of which is urban commuting (using electricity) and 20% is highway driving (using fuel)":

BYD Song PLUS DM-i (110km version): The pure electric range can cover most commuting needs. Calculated at an electricity price of 0.6 RMB/kWh, the full-charge cost is about 6.6 RMB; at low battery, the highway fuel consumption is 5L/100km, and at a fuel price of 8 RMB/L, the cost per kilometer is 0.4 RMB. The annual car usage cost is approximately (8,000km × 0.066 RMB) + (2,000km × 0.4 RMB) = 528 + 800 = 1,328 RMB.
Geely Galaxy L7 (115km version): The pure electric cost is about 6.9 RMB per full charge; at low battery, the highway fuel consumption is 5.3L/100km, and the cost per kilometer is 0.424 RMB. The annual car usage cost is approximately (8,000km × 0.069 RMB) + (2,000km × 0.424 RMB) = 552 + 848 = 1,400 RMB.

The annual price difference between the two is only 72 RMB, which is almost negligible ⚠️. However, if you often drive on highways (e.g., highway mileage accounts for 50% of annual driving), the fuel efficiency advantage of the Song PLUS DM-i will be more obvious, with an annual cost difference of about 300 RMB.

Summary: For those who mainly commute in cities, pursue extreme fuel efficiency and smoothness, choose the BYD Song PLUS DM-i; for those who like strong power and occasionally need the thrill of highway overtaking, choose the Geely Galaxy L7.

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

When choosing a car for the family, the exterior should not only be liked by oneself but also cater to the aesthetic of the whole family — neither too ostentatious nor too outdated.

The design of the Song PLUS DM-i takes a "classic and timeless" route, with the Dragon Face 3.0 family-style front face, rounded and full lines, and no exaggerated decorations. It is acceptable to both young people and elders. The body colors are mainly mainstream colors such as white and gray, which also have better residual value.

The Galaxy L7 focuses on "high-tech and trendy", with the "Galaxy Light" design language on the front face, split headlights + closed grille, paired with fluorescent green decorative strips, which has a strong visual impact. The sloping roof shape and petal-shaped wheels on the side of the body are more in line with the aesthetic of young families, but the overly personalized design may make some elders feel "not stable enough".

In terms of interior: the layout of the Song PLUS DM-i is simple and practical, with a large area of soft materials wrapped, exquisite stitching craftsmanship, and good odor control (authoritative media tests show that the formaldehyde content is lower than the national standard). The 12.8-inch rotatable central control screen is the biggest highlight — horizontal screen for watching videos and vertical screen for navigation, adapting to more APPs, with full practicality 👍.

The interior of the Galaxy L7 is "full of high-tech sense". The three-screen linkage (instrument panel + central control + passenger entertainment screen) is the core selling point. The passenger screen supports chasing dramas and playing games, which can meet the entertainment needs of children or family members. However, the central control screen is a fixed vertical screen, and the adaptation of some APPs is not as flexible as the rotatable screen; moreover, the proportion of hard plastic materials in the interior is slightly higher, and the touch feeling is not as delicate as that of the Song PLUS DM-i.

It is worth mentioning that both cars are equipped with PM2.5 filtration and air purification functions, which are very friendly to families with children. However, the Song PLUS DM-i has more abundant interior storage space, such as the wireless charging panel + through-type storage slot in front of the gear lever, which can easily hold mobile phones, keys, water cups and other miscellaneous items, more in line with daily car usage scenarios.

3. Space and Comfort: Showdown of Family-Sized Space

Space is a "hard indicator" for family car purchases — whether it can fit a child seat, whether the trunk can hold a stroller + luggage, and whether it will be tiring to ride for a long time are all key points.

From the wheelbase data, the 2785mm of the Galaxy L7 is 20mm longer than the 2765mm of the Song PLUS DM-i, so theoretically, the rear space is more advantageous. In actual experience:

Front row: Both cars have good seat wrapping. The seat filler of the Song PLUS DM-i is softer, with better lumbar support, and it is not easy to get tired during long-time driving; the seats of the Galaxy L7 are harder with strong support, suitable for users who like a sporty style.
Rear row: When a passenger with a height of 175cm rides, the legroom of the Song PLUS DM-i is about two fists, and that of the Galaxy L7 is about two and a half fists, with little difference. However, the rear floor of the Song PLUS DM-i is almost flat, so the leg comfort of the middle passenger is better; the floor of the Galaxy L7 has a slight bulge (about 3cm), and the middle passenger will feel a little cramped during long-time riding.
Trunk: The conventional volume of the Song PLUS DM-i is 574L, which can be expanded to 1600L when the rear seats are folded down; the conventional volume of the Galaxy L7 is 520L, and about 1500L when the rear seats are folded down. The trunk opening of the Song PLUS DM-i is larger and deeper, which can easily hold 2 28-inch suitcases + 1 stroller, while the Galaxy L7 needs to fold down one rear seat to accommodate 😅.

In terms of comfort configuration: both cars are equipped with automatic air conditioning, rear air vents, and seat heating (on some versions) as standard. However, the high-end version of the Song PLUS DM-i provides seat ventilation, which is more comfortable for driving in summer; the Galaxy L7 is equipped with electric adjustment of the passenger seat as standard, so the experience of the passenger is better.

In terms of noise insulation performance: the double-layer sound insulation glass + active noise reduction system of the Song PLUS DM-i provides better quietness during urban commuting, and almost no engine noise can be heard when the speed is below 60km/h; the noise insulation effect of the Galaxy L7 is slightly inferior, and the noise when the engine intervenes during rapid acceleration is more obvious, but the wind noise control at high speed is almost the same between the two.

4. Intelligent Technology: Infotainment and ADAS Experience

Nowadays, family users have higher and higher requirements for the smoothness of the infotainment system and the safety of ADAS — after all, they need to play animations for children and rely on auxiliary functions to reduce fatigue during long-distance driving.

In terms of infotainment system: the Song PLUS DM-i is equipped with the DiLink 4.0 intelligent network system, developed based on Android, supporting voice control, OTA upgrades, and mobile phone connectivity. Voice control can accurately recognize commands such as "turn on the air conditioning" and "navigate to the kindergarten" with a response speed of about 0.5 seconds, and also supports continuous dialogue without repeated wake-up. The APP ecosystem is rich, and commonly used software such as Douyin and iQiyi can be installed, so children can watch animations in the back row.

The Galaxy L7 is equipped with the Galaxy N OS system, which also supports voice control and OTA upgrades. The interactive logic of three-screen linkage is novel, and the passenger screen can be operated independently without affecting the driver's navigation. However, the recognition accuracy of voice control is slightly lower than that of the DiLink system, and there are occasional cases of "answering irrelevant questions"; moreover, some APPs need to be downloaded separately on the passenger screen, and the adaptability needs to be improved ⚠️.

In terms of ADAS features: both cars are equipped with basic L2-level functions such as ACC adaptive cruise, lane keeping assist, and automatic emergency braking as standard, which can meet the needs of highway cruising and urban traffic jams.

The high-end version of the Song PLUS DM-i can be optionally equipped with the "DiPilot 3.0" enhanced ADAS system, supporting highway navigation assist (automatic lane change, follow-up start and stop), which can greatly reduce driving fatigue on the highway; the Galaxy L7 is equipped with BSD blind spot detection and rear collision warning as standard, making lane changing safer, but it does not have the highway navigation assist function, so the convenience of long-distance driving is slightly worse.

It is worth mentioning that the ADAS systems of both cars have undergone a lot of actual road tests. Official data shows that the recognition accuracy of automatic emergency braking is over 95%, which can effectively avoid rear-end collisions and provide more safety guarantee for family users.

III. Buying Guide: Tell You Exactly Which One to Choose

🚗 Recommended for Users Who Choose the「BYD Song PLUS DM-i」:

Mainly commute in cities, drive less than 5,000km on highways every year, and pursue extreme fuel efficiency and smoothness;
Have a large family (more than 3 people), often need to travel with a full load, and value the comfort of the middle rear passenger and the trunk storage capacity;
Pay attention to brand reputation and residual value, and hope that the vehicle will depreciate less when resold after 3-5 years (BYD's plug-in hybrid models have the leading residual value in the same level);
Have long-distance driving needs and require highway navigation assist function to reduce fatigue;
Have high requirements for interior materials and noise insulation effect, and prefer a "low-key and practical" design style.

🚀 Recommended for Users Who Choose the「Geely Galaxy L7」:

Young families who like high-tech design and hope the vehicle has a unique exterior and interior style;
Occasionally need aggressive driving, pursue strong power, and hope to have sufficient power reserve when overtaking on highways;
Passengers often ride in the front passenger seat (such as wives and children), and value the passenger entertainment screen and electric adjustment function;
Have a limited budget and want to buy richer configurations at a lower price (the Galaxy L7 has a lower starting price, and the mid-range version already has three-screen linkage);
Have high requirements for the warranty policy. The lifetime unlimited mileage warranty for the three-electric system of the Galaxy L7 is more advantageous than the "mileage-limited" warranty of the Song PLUS DM-i.

IV. Frequently Asked Questions (FAQ)

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

Answer: The BYD Song PLUS DM-i has a slight advantage in urban usage costs, mainly due to its lower official fuel consumption at low battery and more efficient electric drive system. Taking the 110km/115km range versions as examples: assuming daily urban commuting of 50km, the Song PLUS DM-i can fully cover it with pure electric power, costing about 3.3 RMB per day (50km × 0.12kWh/km × 0.6 RMB/kWh); the Galaxy L7 also can cover it with pure electric power, costing about 3.45 RMB per day (50km × 0.115kWh/km × 0.6 RMB/kWh). If there is no charging condition and you drive with low battery, the Song PLUS DM-i's 4.4L/100km fuel consumption is 0.4L/100km lower than the Galaxy L7's 4.8L/100km. Calculated at 8 RMB/L, the cost per 100km is 3.2 RMB lower. According to the annual urban driving of 8,000km, the Song PLUS DM-i can save about 256 RMB per year. In general, the urban usage cost of the two is very close, and the Song PLUS DM-i has a slight edge 😊.

2. Are the batteries safe? What are the technical differences?

Answer: The batteries of both cars have passed strict safety tests, so safety is not a concern, but the technical routes are slightly different. The BYD Song PLUS DM-i is equipped with the "Blade Battery", which uses lithium iron phosphate material and has passed the industry's most rigorous "needle penetration test" — after piercing the battery with a steel needle, there is no fire or explosion, only slight heat generation. Official data shows that its thermal runaway probability is 0. The Geely Galaxy L7 is equipped with the "Aegis Battery Safety System", which is also made of lithium iron phosphate material. It has passed the "1.2-ton battery pack compression test" and "60km/h collision test". The deformation of the battery pack is less than 5%, and there is no leakage or fire. Crash tests by authoritative media CarHome show that the battery packs of both cars can work normally after a 40% offset frontal collision without potential safety hazards 👍.

3. Is the pure electric range real? How much will the range decrease in winter?

Answer: The pure electric ranges of both cars are tested based on the CLTC cycle. The actual range will be affected by temperature and driving habits, but the overall authenticity is high. Taking the 110km/115km range versions as examples: at room temperature (around 25℃), the actual pure electric range during urban commuting is about 85%-90% of the official label: the Song PLUS DM-i can run 90-100km, and the Galaxy L7 can run 95-105km. In winter (around -5℃), due to the reduced activity of the battery, the range will decrease by 30%-40%: the actual pure electric range of the Song PLUS DM-i is about 60-70km, and that of the Galaxy L7 is about 70-80km. If the air conditioner is turned on in winter, the range will decrease by another 10-15km, but it can still meet daily commuting (the daily commuting mileage of most families is within 50km). It should be noted that both cars are equipped with battery thermal management systems, which can reduce the range attenuation in winter to a certain extent.

4. Is the maintenance cost high? What are the differences in maintenance cycles and costs between the two?

Answer: The maintenance costs of both cars are lower than those of fuel-powered vehicles, and the difference is not significant. The maintenance cycle of the BYD Song PLUS DM-i is 7,500km/time. The cost of minor maintenance (oil and filter change) is about 400 RMB, and the cost of major maintenance (oil, filter, air filter change, etc.) is about 800 RMB. The annual maintenance cost for 10,000km of driving is about 530 RMB. The maintenance cycle of the Geely Galaxy L7 is 10,000km/time. The cost of minor maintenance is about 450 RMB, and the cost of major maintenance is about 900 RMB. The annual maintenance cost for 10,000km of driving is about 450 RMB. Official data shows that the three-electric systems of both cars do not require additional maintenance, only regular inspection of circuits and battery status, resulting in low long-term car usage costs ⚠️.

5. How about the residual value of the two cars? How much can they be sold for after 3 years?

Answer: According to the "2024 Plug-in Hybrid SUV Residual Value Report" released by the China Automobile Dealers Association, the 3-year residual value of the BYD Song PLUS DM-i is about 65%-70%, and that of the Geely Galaxy L7 is about 60%-65%. Taking the Song PLUS DM-i 55km version with a starting price of 129,800 RMB as an example, the resale price after 3 years is about 84,400-90,900 RMB; taking the Galaxy L7 55km PRO with a starting price of 125,700 RMB as an example, the resale price after 3 years is about 75,400-81,700 RMB. The higher residual value of the Song PLUS DM-i is mainly due to its larger sales volume, more mature technical reputation, and wider after-sales network. If you plan to change cars in the short term, the Song PLUS DM-i is more advantageous; if you plan to hold it for a long time (more than 5 years), the difference in residual value between the two will narrow.

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