Q
what is cgi in mercedes
In Mercedes-Benz vehicles, CGI stands for "Charged Gasoline Injection" – the brand's proprietary turbocharged direct-injection engine technology. By spraying fuel directly into the combustion chamber and pairing it with a turbocharging system, this setup significantly boosts combustion efficiency and power output while cutting fuel consumption and emissions. You'll find it under the hood of popular engine families like the M274 and M270 series.
For Malaysian drivers, CGI engines are pretty common across Merc's local lineup – think select C-Class and E-Class models. These powerplants are well-suited to Malaysia's climate and fuel quality, striking a solid balance between performance and everyday usability. While direct injection has become standard fare across the auto industry, Mercedes has taken it further by integrating technologies like the EQ Boost mild hybrid system to stay aligned with global environmental trends.
If you're eyeing a Mercedes with CGI tech, do check the official specs but more importantly, schedule a test drive. Nothing beats getting behind the wheel to see if it truly fits your driving style and needs.
Special Disclaimer: This content is published by users and does not represent the views or position of PCauto.
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Related Q&A
Q
When a car has no brakes?
When your car's brakes fail, the first thing to do is stay calm. Quickly flip on your hazard lights to warn other vehicles, then try pumping the brake pedal rapidly—this might restore some braking power. If you're driving a manual, downshift gradually to use engine braking; for automatics, switch to manual mode or a lower gear. Keep a firm grip on the steering wheel to maintain control, avoiding sharp turns that could cause a skid. If needed, use the handbrake to help slow down, but don't yank it all the way to prevent fishtailing. Once speed drops, look for a safe spot to pull over.
Regular maintenance is key: check brake fluid levels and condition routinely, replace brake pads when they wear below 3mm, and get immediate repairs if the pedal feels soft or has extra travel—air in the lines or fluid leaks can disable the system. On long downhill mountain roads, use lower gears to control speed and reduce brake fade from overheating. After driving in the rain, tap the brakes lightly to clear water film and boost stopping power. Most importantly, develop good predictive driving habits to cut down on sudden braking needs.
Q
Does every wheel have a brake?
In most modern vehicles, each wheel is equipped with a braking system to ensure stability and safety. Passenger cars typically feature a four-wheel braking setup, meaning both front and rear wheels have brake components. Front wheels usually use disc brakes, while rear brakes might be either disc or drum-based, depending on the model and its positioning. High-performance or luxury vehicles often come standard with four-wheel disc brakes to enhance stopping power, while economy cars may opt for more cost-effective drum brakes on the rear—though these still fully meet daily driving needs. Notably, the widespread adoption of Electronic Parking Brakes (EPB) and Anti-lock Braking Systems (ABS) has made modern brake technology more intelligent; for instance, some models use electric motors to independently control braking force at each wheel to prevent skidding. Additionally, new energy vehicles typically include regenerative braking systems, with braking logic slightly different from traditional fuel-powered cars. The motor provides auxiliary deceleration through regenerative braking, but mechanical brakes remain the final safety net. Maintaining the braking system is also crucial—regularly check brake pad thickness and brake fluid condition. In humid climates, if you notice increased stopping distances, gently applying the brakes can help remove water film from the brake discs.
Q
How many brakes does AWD have?
All-wheel drive (AWD) vehicles, like any passenger car, come standard with four-wheel brakes—each wheel gets its own independent braking setup, including rotors, calipers, and pads, so every tire can slow down or stop on its own. The AWD system’s thing is power distribution, but the brake system design is basically the same as two-wheel drive cars. The main differences might be in electronic aids, like ABS, EBD, or brake tuning for off-road modes. These systems tweak brake force distribution based on the drive type, especially helpful for stability on wet or tricky roads. It’s worth noting some high-performance or luxury AWD models might have fancier brake tech—ceramic rotors or multi-piston calipers—but that’s not directly tied to the drive system; it’s more of a performance upgrade choice. For daily driving, regularly checking brake fluid levels, pad thickness, and rotor condition is key. No matter the drive type, keeping your brakes in good shape is what keeps you safe out there.
Q
What was the last car with drum brakes?
The last mass-produced car still fitted with drum brakes was the 2021 Dacia Sandero; its base trim for the European market kept drum brakes on the rear wheels, mainly as a cost-saving measure and to simplify maintenance. While drum brakes can't match disc brakes in stopping power or heat dissipation, their simple, durable construction and low repair costs mean they're still used on some budget models. In fact, many entry-level cars like the Perodua Axia had rear drum brakes in their early generations too, only gradually upgrading to four-wheel disc brakes in recent years. As technology has advanced, drum brakes now mostly show up on the rear wheels of commercial vehicles or economy cars, while performance and luxury vehicles have fully switched to disc brake setups. For everyday city driving, properly tuned drum brakes are more than capable of meeting safety needs, but disc brakes handle heat fade better during frequent mountain driving or high-speed use. Consumers don't need to overthink brake types—any reputable manufacturer's braking system has to pass strict safety certifications, and regular maintenance is the real key to keeping your brakes performing at their best.
Q
When you brake, do all wheels brake?
When you hit the brakes, in theory all wheels contribute to stopping, but the actual performance depends on the vehicle's brake system design and setup. Most modern cars use a four-wheel braking system, with hydraulic or electronic controls distributing braking force to the front and rear wheels for smooth deceleration. Regular family cars typically have a front-wheel biased braking setup since the front wheels bear more weight during braking, while high-performance or luxury vehicles might come with more advanced brake force distribution systems—some even have electronic stability programs that dynamically adjust each wheel's braking power to prevent skidding. It's worth noting that some older or economy models may have weaker rear brake force, and vehicles equipped with ABS will automatically adjust each wheel's braking during hard stops to avoid lockups. Additionally, electric and hybrid cars often feature regenerative braking systems, which use the motor to slow the vehicle when you lightly press the brakes, reducing reliance on the mechanical brakes. Understanding these principles can help you use your brakes more effectively in daily driving and pay attention to differences in brake system configurations when shopping for a new car.
Q
What is a wheel brake assembly?
The wheel brake assembly is the core component of a car's braking system, mainly used for decelerating or stopping the vehicle. It consists of components such as brake discs, calipers, pads, drums, and shoes. When you press the brake pedal, the hydraulic system transmits pressure to the calipers or shoes, causing them to clamp the brake discs or drums, generating braking force through friction. Disc brakes have good heat dissipation and are mostly used on the front wheels, while drum brakes, with their simple structure and low cost, are commonly found on the rear wheels. In daily driving, pay attention to the wear of the brake pads. Usually, they need to be inspected or replaced every 30,000 to 50,000 kilometers. If you hear a sharp metallic sound or notice that the braking distance has increased, it may be a warning that the brake pads are worn to the limit. The braking system design varies across different models. High-performance cars may be equipped with multi-piston calipers or carbon-ceramic brake discs to improve heat resistance, while economy cars focus more on durability and cost balance. During regular maintenance, it is recommended to check the water content of the brake fluid to avoid brake failure due to reduced boiling point. If braking performance decreases after driving in the rainy season, it may be due to rust on the surface of the brake discs; lightly pressing the brake a few times can restore it.
Q
Can you drive with a broken brake drum?
Driving a vehicle with a damaged brake drum is extremely dangerous and not recommended. Since the brake drum is a core component of the drum brake system, any cracking or warping can cause a significant drop in braking power or even total failure, making accidents highly likely—especially on wet roads or in emergency situations. Typically, a damaged brake drum will be accompanied by metallic grinding noises, a longer brake pedal travel, or the vehicle pulling to one side during braking. If you notice these issues, stop immediately and inspect the brakes. While it might be possible to move the vehicle slowly to a repair shop over very short distances, you should never drive normally or carry passengers. Even a small crack can suddenly burst under the high temperatures generated during braking. It's worth noting that most modern vehicles use either front disc and rear drum brakes or all-disc brakes, with drum brakes more commonly found on rear wheels or commercial vehicles. Regularly checking brake pad thickness and drum inner wall wear can prevent these problems. It's advisable to inspect the brake system every 60,000 kilometers or as recommended in your maintenance manual. For vehicles that frequently brake in mountainous areas or carry heavy loads, the inspection interval should be shortened.
Q
What are the two types of brake lines?
The brake lines used in automotive braking systems are mainly divided into two types: metal hard lines and rubber hoses. Metal hard lines are usually made of galvanized steel or copper-nickel alloy, featuring high pressure resistance and corrosion resistance. They're primarily used in fixed areas between the frame and axle, ensuring stable brake fluid transmission over the long term. Rubber hoses, on the other hand, have a composite structure of multi-layer reinforced rubber and fiber braiding, offering a certain degree of flexibility. They're typically used to connect suspension moving parts with the frame, adapting to the deformation needs when wheels bounce up and down. It's important to note that rubber hoses can age and crack over time—we recommend inspecting and replacing them every 5 years or 100,000 kilometers. Additionally, some high-performance models now use stainless steel braided hoses to enhance pressure resistance and durability, but for daily driving, both traditional materials reliably ensure braking safety as long as you regularly check for leaks, bulges, or deformation in the lines. Brake fluid should also be replaced every 2 years to prevent moisture buildup from affecting braking efficiency.
Q
Do any pros still use rim brakes?
Professional riders do still use rim brakes in specific scenarios, especially in road races or long-distance endurance events. Rim brakes are favored for their lightweight design, simple structure, and easy maintenance. They deliver reliable braking power and heat dissipation, particularly in dry conditions. While disc brakes offer better stability on wet roads and steep descents, they add weight and require more complex setup. That's why rim brakes still hold value on race-grade road bikes where every gram counts—you'll see some classics riders opt for them to reduce wheel weight. These days, though, the pro peloton is gradually shifting toward disc brakes as the norm. For amateur riders, it really comes down to your needs. If you often ride in rainy mountain areas, disc brakes are safer. If you prefer that classic mechanical feel or need to cut weight for racing, rim brakes are still a solid choice. Both technologies have their place; it all depends on balancing your riding environment and personal preferences.
Q
How often should you replace front suspension?
The replacement frequency of the front suspension system usually depends on the vehicle's usage conditions, driving habits, and road conditions. Generally speaking, front suspension components like shock absorbers, control arms, and ball joints have a lifespan of around 80,000 to 100,000 kilometers. However, if you frequently drive on bumpy roads or carry heavy loads, you may need to inspect or replace them earlier. It's recommended to conduct a comprehensive suspension system inspection every 20,000 kilometers or once a year, especially if you notice abnormal noises, steering wheel vibration, or uneven tire wear—then you should promptly take it to a professional repair shop for testing. In addition, maintaining the suspension system is important; regularly cleaning and lubricating relevant components can extend its service life. Understanding how the suspension system works also helps car owners better maintain their vehicles. For example, the role of shock absorbers is to absorb road vibrations, while control arms connect the wheels to the car body, ensuring driving stability. Ignoring suspension system issues not only affects driving comfort but can also endanger driving safety, so regular inspection and maintenance are essential.
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Q
Do FWD cars have four brakes?
Yes, front-wheel drive (FWD) cars, like all modern passenger vehicles, come with four brakes—one for each wheel. This setup is crucial for safety and meets international standards. Typically, FWD systems use dual-piston calipers up front and single-piston ones in the rear. Why? Because the front wheels handle most of the braking force—around 70%—especially since weight shifts forward when you slow down.
To dig a bit deeper: whether it's FWD, RWD, or AWD, brake systems work on the same basic principles. But high-performance models often step things up with larger rotors or multi-piston calipers to boost cooling and stopping power.
For everyday driving, keeping an eye on brake pad thickness and brake fluid condition is a must. If you notice longer stopping distances or weird noises, get it checked out ASAP—safety first. And let's not forget, many premium cars now come with Electronic Brakeforce Distribution (EBD) and Brake Assist (BAS), which smartly tweak braking performance for better results.
Q
How many types of brakes are there in a car?
There are four main types of braking systems commonly found in cars: disc brakes, drum brakes, electronic parking brakes, and regenerative braking systems. Disc brakes slow the vehicle by having brake calipers clamp down on brake discs. They offer excellent heat dissipation and are typically used on front wheels or in high-performance cars. Drum brakes, on the other hand, use brake shoes that expand outward to rub against the brake drum. They're cheaper to produce and are often found on rear wheels or in economy cars. Electronic parking brakes use a button to control a motor for parking, making them easy to operate and space-saving, gradually replacing traditional manual handbrakes. Regenerative braking is a key technology in hybrid and electric vehicles, as it can convert the kinetic energy generated during braking into electricity for storage. Most vehicles today use a mix of these braking types; for example, the front-disc-rear-drum setup balances performance and cost. In daily driving, it's important to check the thickness of your brake pads. If you hear a metallic scraping noise or notice reduced braking power, you should replace the brake pads or brake fluid promptly. Brake discs tend to rust easily in the rainy season, but gently pressing the brakes a few times during initial driving can remove the rust and ensure driving safety.
Q
When a car has no brakes?
When your car's brakes fail, the first thing to do is stay calm. Quickly flip on your hazard lights to warn other vehicles, then try pumping the brake pedal rapidly—this might restore some braking power. If you're driving a manual, downshift gradually to use engine braking; for automatics, switch to manual mode or a lower gear. Keep a firm grip on the steering wheel to maintain control, avoiding sharp turns that could cause a skid. If needed, use the handbrake to help slow down, but don't yank it all the way to prevent fishtailing. Once speed drops, look for a safe spot to pull over.
Regular maintenance is key: check brake fluid levels and condition routinely, replace brake pads when they wear below 3mm, and get immediate repairs if the pedal feels soft or has extra travel—air in the lines or fluid leaks can disable the system. On long downhill mountain roads, use lower gears to control speed and reduce brake fade from overheating. After driving in the rain, tap the brakes lightly to clear water film and boost stopping power. Most importantly, develop good predictive driving habits to cut down on sudden braking needs.
Q
What are the back brakes called?
A car's rear brake system, commonly referred to as the "rear wheel braking system," mainly includes two types: drum brakes and disc brakes. Drum brakes have a simple structure and lower cost, commonly found on the rear wheels of economy models. They slow the vehicle by brake shoes expanding outward to friction against the brake drum. Disc brakes, on the other hand, use brake calipers to clamp the brake disc, offering better heat dissipation and braking efficiency, and are mostly used on the rear wheels of mid-to-high-end models or high-performance vehicles.
Modern vehicles typically use different front and rear brake combinations based on front and rear axle load distribution and braking force requirements. For example, disc brakes on the front wheels and drum brakes on the rear, or all-disc brakes on all four wheels. Some high-performance cars are also equipped with ventilated discs or slotted/drilled discs to enhance heat dissipation.
In addition, the Electronic Brakeforce Distribution (EBD) system dynamically adjusts the front-to-rear braking force ratio to ensure vehicle stability during hard braking. Systems like ABS (Anti-lock Braking System) and ESC (Electronic Stability Control) also work in conjunction with the rear brakes to improve safety on slippery roads.
In daily driving, rear brakes usually wear less than front brakes, but regularly checking brake pad thickness and brake fluid condition remains a necessary maintenance item. This is especially important when driving in mountainous areas or in scenarios with frequent braking, where paying attention to the rear brake performance is crucial.
Q
Why do some cars have four brakes?
Cars come with four braking systems mainly to boost stopping power and safety. Modern vehicles typically have independent brake setups at each wheel, whether disc or drum brakes. This design ensures braking force is evenly distributed, reducing the risk of losing control from one-sided braking—especially crucial when driving at high speeds or making emergency stops, where four-wheel braking shortens stopping distances and keeps the vehicle stable. Plus, four-wheel brake systems are a must for meeting modern safety standards; features like Anti-lock Braking Systems (ABS) and Electronic Brakeforce Distribution (EBD) rely on independent control of each wheel to work their best. Some high-performance cars even upgrade to multi-piston calipers or ventilated disc brakes, which enhance heat dissipation and resistance to fade, perfect for spirited driving or long downhill stretches. For everyday driving, regularly checking brake pad thickness and brake fluid condition is key to keeping your braking system in top shape.
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