BYD Qin Plus DM-i 128KM 2025: Fifth-generation pragmatism

BYD Qin Plus DM-i 128KM is a sedan chosen with a cool head. In 2025, the model gained its key technological advantage — the latest 5th-generation hybrid powertrain (DM 5.0). Thanks to it, the car feels light and completely silent in the city, while on the highway it delivers incredible range. Add full-size dimensions (4780 × 1837 × 1515 mm), a 2718 mm wheelbase, front-wheel drive, and E-CVT, and it becomes clear: the focus here is on everyday, uncompromising practicality.

At present, Qin PLUS is the undisputed leader in the A-class family sedan market, with cumulative sales exceeding 1.5 million units. It became the best-selling family sedan in 2023 and 2024, representing Chinese brands. It also made Chinese consumers proud to drive Chinese family sedans, earning praise from internet users: “Where there is a road, there is Qin; where there is a home, there is Qin.”

It's important not to confuse the versions: the 55KM and 128KM models are different in terms of their intended use.

The Qin Plus DM-i has one feature that deserves special mention: it also comes in a more basic version with a 7.68 kWh battery and an electric range of 55 km. Externally, it's very easy to confuse it with the 128KM version, as the body, overall interior architecture, and basic layout are almost identical. In photos and ads, the difference is often barely noticeable.

However, in terms of technology and intended use, these are two different cars.

The 55KM version is a basic plug-in hybrid. It's suitable for those with short commutes and simply want to drive more often in electric mode. The 128KM version is a whole new level. It has a larger battery capacity of 15.8 kWh, and an electric range of 128 km. This means the car can now be used in the city in a completely different way: not as a regular hybrid with a small electric bonus, but as a car that can truly cover a significant portion of everyday trips on electric power.

That's why you shouldn't rely solely on appearance when buying a Qin Plus DM-i. The cars are similar, but their personalities are different. If an ad, a salesperson, or a dealership simply says "Qin Plus DM-i," that's not enough. You need to clarify two things: the battery capacity and the official electric range. In one case, it's the 55 km version with a 7.68 kWh battery, while in the other, it's the full 128 km version with a 15.8 kWh battery. And that's a completely different car in terms of actual utility.

To be honest, the 128 km version is the one to consider if you're looking for more than just a hybrid "for show," but a truly comfortable everyday car with noticeable fuel savings and a fully electric mode.

Exterior and dimensions

On the outside, Qin Plus looks like a classic four-door sedan with a long hood, a clean profile, and a restrained rear end. Its appearance is built around familiar BYD design elements with full LED lighting (LED headlights with automatic switching and delayed shut-off). At 4780 mm in length, the body gives the car the right sense of solidity, while the 450-liter trunk confirms its status as a proper family-sized vehicle.

All versions of Qin Plus, including the 128KM, come standard with 225/60 R16 tires. And this is an entirely deliberate decision: no chasing looks at the expense of comfort. This is the ideal, generously cushioned profile for an everyday car, contributing to ride smoothness and easily absorbing broken asphalt in normal city driving.

V2L external power: a truly useful tool

The BYD Qin Plus DM-i 128KM comes with a feature often seen as a nice bonus, but in reality it can become one of the most useful functions in the car. This is the V2L (Vehicle-to-Load) system with a power output of 3.3 kW.

Simply put, the car turns into a mobile power source. Using a special adapter, you can connect regular household appliances just like you would to a home socket.
And this is where it gets interesting.

What it delivers in practice

3.3 kW is not just for charging a phone — it’s full household-level power. The car can easily run:

• a refrigerator
• power tools
• lighting
• laptops, routers, power stations
• a TV
• kettle, multicooker, electric stove

In essence, it’s a portable power station on wheels.

Power comes from the main traction battery (15.8 kWh), not the small 12V battery. This is crucial — it allows usage for hours, not minutes.

Given real-world power outages, V2L is no longer about picnics — it’s about energy independence.

In real life, this means you can:

• power your apartment during outages
• keep internet and router running
• maintain lighting
• work on a laptop without a generator
• keep your fridge running

All of this without noise, without a fuel generator, and without constant supervision.
Effectively, the car becomes a backup power source for your home.

Trips, outdoor use, and work

V2L is also useful in everyday scenarios:

• outdoors — lighting, music, cooking
• work — power tools directly from the car
• travel — build a full campsite without a generator

Charging other EVs

An often overlooked feature.

You can use V2L to charge other electric vehicles — not fast like a station, but as emergency support:

• help another EV reach a charger
• share energy on the road
• use Qin Plus as a backup where infrastructure is unavailable

How V2L works with the hybrid system

The key advantage is not just V2L itself, but how it works with the hybrid system.

Unlike pure EVs, where output depends only on battery charge, here there’s an additional layer — the gasoline engine.

The logic is:

• at high charge, power comes from the battery (15.8 kWh)
• as charge drops, the system maintains a minimum 20–25% SoC
• then the engine starts and works as a generator

So the car doesn’t shut down — it switches to energy support mode.

What this means in practice

Qin Plus can function as:

• a battery (while charged)
• a generator (when charge is low)

This gives:

• much longer runtime thanks to fuel
• no risk of shutdown after a few hours
• control over mode: silent (battery) or engine-supported

In essence, it becomes a hybrid power station.

Simple scenario

1. Charged car → runs silently like a power bank
2. Charge drops → system maintains minimum
3. Engine starts → recharges battery
4. Power supply continues

And this can last as long as there is fuel in the tank (65L).

Interior and equipment

The cabin of the BYD Qin Plus DM-i 128KM is done simply, but pleasantly. In front of the driver there is an 8.8-inch digital instrument cluster, and in the center a 10.1-inch multimedia screen. The layout is familiar: the instrument cluster shows speed, battery charge, range, consumption, and core vehicle data, while the central display handles navigation, music, phone functions, car settings, and climate control.

The multimedia screen does not feel like a trendy add-on for the sake of fashion. It is large enough to conveniently use maps, the rear-view camera, and menus, while not monopolizing attention. In everyday driving, that matters more than it seems. When a screen is overloaded or designed purely for effect, it starts to annoy. Here, everything is calmer and more straightforward.

One of the best solutions in the cabin is the electronic column-mounted transmission selector. As a result, the center tunnel remains more open. There is more room up front for a phone, keys, a wallet, and other small items that always end up scattered around the cabin. It is a small detail, but it is precisely these details that create the feeling of a convenient car.

The steering wheel is leather-wrapped, with control buttons on the spokes. It is adjustable for both height and reach, so the driving position can be properly tailored. This matters because the car is designed for everyday use, not a short test drive. If the seating position behind the wheel is uncomfortable, everything else quickly stops mattering.

The seats are upholstered in leather. The driver’s seat adjusts forward and backward, by backrest angle, and for height. The set of adjustments is basic but sufficient. In a car of this class, what matters more than the number of modes is being able to quickly find a comfortable position and avoid fatigue in city driving.

In terms of equipment, the interior does not feel sparse. There is Bluetooth, a Wi-Fi hotspot, voice control, OTA updates, and a proper selection of ports. There is one USB/Type-C port in the front and two in the rear. The front port delivers up to 15 W, the rear ports up to 18 W. For second-row passengers, this is useful: phones, earphones, or a tablet can be charged on the move without everyone fighting over one weak port.

The audio system has 6 speakers. Music, navigation prompts, radio, and Bluetooth calls all sound normal, without the sense that the audio is coming from “one plastic box.” For this car, that approach is logical: what matters more is that the system is pleasant to use every day, not that it tries to imitate premium class.

The climate system is automatic. There are rear air vents and a PM2.5 filter. These are not decorative checklist items, but things that genuinely affect comfort. Especially if the car is often used in the city, sits in traffic, and serves as a family vehicle. Rear passengers are not left without airflow, and the filter helps keep the cabin air cleaner.

Powertrain: the DM 5.0 revolution

This is where the real engineering masterpiece of the 2025 Qin Plus is hidden. BYD completely rethought the architecture, shifting the focus from a “horsepower race” to extreme efficiency. The car is equipped with the fifth-generation DM-i system.

ICE: the dedicated 1.5-liter BYD472QC engine produces 101 hp (74 kW) and 126 N·m of torque. Its peak power is intentionally lower than in the previous generation, but in return the compression ratio has been increased to an extreme 16:1, and thermal efficiency has reached a record 46%. The engine operates primarily as an ideal generator.

Electric motor: propulsion to the wheels is delivered mainly by an electric motor rated at 163 hp (120 kW) with 210 N·m of torque. Thanks to 7-in-1 integration and silicon carbide (SiC) electronics, current switching efficiency reaches 99.9%.

Integration: instead of a lead-acid battery, the car now uses a lightweight and “long-life” 12V lithium iron phosphate (LFP) battery. And the entire system (from throttle to cooling) is controlled by a single ultra-fast MCU chip, which cuts accelerator response delay by 10 times — down to 10 milliseconds.

Key figures

• 0–100 km/h: 7.6 s (smooth and confident acceleration)
• Top speed: 180 km/h
• Minimum fuel consumption in hybrid mode: just 1.11 L/100 km
• Fuel consumption with a fully discharged battery: 3.98 L/100 km

Battery and intelligent management

The traction battery is BYD’s proprietary LFP Blade Battery with a capacity of 15.8 kWh. It provides 128 km of pure electric range (under the CLTC cycle). But the real magic lies in the 65-liter fuel tank and the AI Energy Consumption Management algorithms.

The system analyzes terrain (through the navigation system) and traffic jams, preparing the battery in advance for long climbs or switching into EV mode in stop-and-go traffic. In cold weather, the battery self-heats using pulsating high-frequency currents, which speeds up charging in freezing conditions by 60%. The result: the total range with a full tank and a fully charged battery reaches a fantastic 2055 km.

Generational evolution: DM 4.0 vs DM 5.0

In terms of equipment, the focus here is on an honest basic package: conventional cruise control, rear-view camera, disc brakes all around, stability control (ESP/DSC), traction control (TCS), electronic brake-force distribution (EBD), and ISOFIX anchors. This is a sensibly specified sedan without extra charges for “autopilots,” where every penny is invested in reliability and autonomy. The combination of the E-CVT hybrid transmission, front-wheel drive, and generously profiled tires works in favor of everyday comfort: the car creeps through dense traffic extremely smoothly, without jerks, and saves your energy on broken asphalt.

The 2025 BYD Qin Plus DM-i 128KM is one of the clearest and most successful versions on the market. The move to the DM 5.0 hybrid system transformed a simply good sedan into the ultimate tool for reducing running costs. With a 101 hp engine and a 163 hp electric motor, it drives smoothly and quietly, the 128 km electric range covers all city needs, and the total driving range of 2055 km permanently removes highway anxiety. For someone who needs one universal daily-use car — spacious, reliable, and phenomenally economical — this is unconditionally the most rational choice.