Common upgrades for the 2020 Mercedes-Benz GLC

The 2020 Mercedes-Benz GLC comes with several systems you can upgrade after purchase, though some changes require dealer installation while others work as aftermarket additions. The most common upgrades fall into three categories: technology and infotainment, comfort features, and performance or appearance modifications. Understanding what's available helps you decide which upgrades match your priorities and budget.

Mercedes offers some upgrades through their dealer network as factory-backed options, while independent shops and aftermarket suppliers provide alternatives for other systems. The cost and complexity vary widely — some upgrades take an afternoon, while others require several hours of professional work.

Key Takeaways

  • The infotainment system can be upgraded to newer versions of MBUX (Mercedes-Benz User Experience) or replaced with aftermarket systems like Apple CarPlay and Android Auto integration.
  • Comfort upgrades include heated and ventilated seats, panoramic sunroofs, and upgraded suspension components that dealers can install.
  • Performance modifications such as suspension tuning, exhaust systems, and engine tuning are available through aftermarket shops but may affect your warranty.
  • Appearance upgrades like wheels, trim pieces, and lighting systems range from straightforward bolt-on changes to more involved installations.
  • Any modification should be discussed with your dealer or a may have access to shop to understand costs, installation time, and potential effects on your vehicle's warranty or resale value.

Infotainment and technology upgrades

The 2020 GLC came standard with an earlier version of the MBUX system. If you want a newer interface with updated features, Mercedes dealers can install the current generation MBUX, which includes a larger touchscreen, improved voice control, and updated navigation software. This is a dealer-installed upgrade that typically costs between $1,500 and $3,000 depending on the specific package and your location.

Aftermarket options include adding or upgrading Apple CarPlay and Android Auto compatibility if your current system doesn't have it, or replacing the entire head unit with a third-party system from brands like Alpine, Kenwood, or Sony. These aftermarket installations usually run $800 to $2,500 and can be done at car audio shops. Keep in mind that removing the factory system may affect warranty coverage for that component, so confirm this with your dealer before proceeding.

You can also upgrade the sound system independently. The 2020 GLC's standard audio is adequate but not premium. Mercedes offers a Burmester surround-sound system as a dealer upgrade, or you can add aftermarket speakers, amplifiers, and subwoofers through audio specialists. Aftermarket audio work typically costs $1,000 to $4,000 depending on how many components you replace.

Comfort and convenience upgrades

Heated and ventilated seats are popular comfort additions for the 2020 GLC. If your vehicle didn't come with these, dealers can retrofit them, though this is more involved than straightforward swapping seat covers — it requires electrical work and seat modifications. Expect to pay $1,200 to $2,000 for this upgrade at a Mercedes dealer.

A panoramic sunroof can be added if your GLC has a standard roof, though this requires structural modifications and is typically a dealer-only job. The cost is substantial — usually $2,500 to $4,000 — and installation takes several days. Aftermarket shops rarely perform this work because of the complexity and potential warranty issues.

Suspension upgrades improve ride quality or handling. You can replace the standard suspension with a coil-over system from companies like Bilstein or KW, which allows you to adjust ride height and stiffness. These typically cost $1,500 to $3,500 installed. Air suspension upgrades are also available through some shops, offering a smoother ride at the cost of higher maintenance.

Exterior and appearance modifications

Wheels are the most straightforward upgrade. The 2020 GLC comes with 18-inch or 19-inch wheels depending on the trim, and you can replace them with aftermarket options in sizes up to 21 inches. A complete set of four wheels with tires typically ranges from $1,200 to $3,500 depending on brand and size. Installation at a tire shop usually costs $100 to $200 total.

Lighting upgrades include LED headlight retrofits, which replace the factory halogen or LED units with brighter, more modern versions. These can cost $800 to $2,000 per headlight assembly depending on the system. Tail light upgrades and underglow lighting are also available through aftermarket suppliers, though underglow legality varies by state and local jurisdiction.

Trim and body modifications include carbon fiber accents, new grille designs, side skirts, and rear diffusers. These are purely cosmetic and range from $300 for straightforward pieces to $2,000 or more for complete body kits. Most bolt on without permanent changes to the vehicle, making them reversible if you decide to remove them later.

Performance modifications and engine tuning

Engine tuning adjusts the computer settings that control fuel injection, ignition timing, and boost pressure (on turbocharged models). This can increase horsepower and torque, though gains vary depending on your engine. Tuning typically costs $400 to $800 and is performed by shops specializing in Mercedes vehicles. Be aware that tuning may void your manufacturer's warranty on engine components.

Exhaust system upgrades replace the factory muffler and pipes with performance versions that reduce back pressure and often produce a louder, more aggressive sound. Aftermarket exhausts for the 2020 GLC range from $800 to $2,500 depending on the brand and whether it's a full system or just the muffler. Installation usually takes 2 to 4 hours at a shop.

Intake system upgrades, such as cold air intakes or performance air filters, claim to improve airflow to the engine. These cost $200 to $600 and are among the simplest performance modifications to install. Results are modest — typically a few horsepower — but they're a low-cost entry point if you're interested in performance work.

Warranty and resale considerations

Any modification can potentially affect your warranty. Mercedes dealers will honor warranty claims for components unrelated to your upgrade, but they may deny coverage for parts directly affected by the modification. For example, if you install a performance exhaust and the engine develops a problem, the dealer might refuse to cover engine repairs. Discuss this with your dealer before proceeding with any work.

Resale value is another consideration. Some upgrades — like quality wheels, a panoramic sunroof, or an upgraded infotainment system — may appeal to future buyers and hold value. Others, like aggressive body kits or extreme lowering, can make the vehicle harder to sell. Conservative upgrades that improve comfort or technology tend to be safer choices if you plan to sell the vehicle later.

Where to get upgrades installed

Mercedes dealerships offer factory-backed upgrades and can install most modifications, though dealer labor rates are typically higher than independent shops. A dealer installation provides warranty protection on the work itself and ensures the modification is done to manufacturer standards.

Independent shops specializing in Mercedes vehicles can often perform the same work at lower labor rates. Look for shops with experience on your specific model year and read reviews before committing. Ask whether they warranty their work and whether the modification will affect your factory warranty.

For straightforward bolt-on upgrades like wheels or trim pieces, you can sometimes handle installation yourself if you have basic mechanical skills and the right tools. However, electrical work, suspension modifications, and engine tuning should always be done by professionals to avoid damage or safety issues.

Frequently Asked Questions

Will upgrading my infotainment system void my warranty?

Dealer-installed MBUX upgrades are covered under warranty. Aftermarket head unit replacements may void warranty coverage for that specific component, though the rest of your vehicle remains covered. Ask your dealer about their warranty policy before choosing an aftermarket system.

Can I install wheels and tires myself?

If you have a jack, jack stands, and a lug wrench, you can change wheels yourself. However, tire mounting and balancing require specialized equipment, so most people have a tire shop handle the installation. The cost is usually $100 to $200 for all four wheels.

What's the most popular upgrade for the 2020 GLC?

Wheels are the most common upgrade because they're visible, relatively affordable, and don't require dealer installation. Infotainment upgrades and suspension improvements are also popular among owners who want to modernize the technology or improve ride quality.

Do performance upgrades like tuning actually make a noticeable difference?

Engine tuning on the 2020 GLC typically adds 20 to 40 horsepower depending on the engine and tune. You'll feel the difference in acceleration, especially on the highway, though it's not dramatic. Exhaust upgrades are more noticeable for sound than performance.

How long does a typical upgrade installation take?

straightforward upgrades like wheels take 1 to 2 hours. Infotainment system replacements usually take 4 to 6 hours. Suspension work, panoramic sunroofs, and major modifications can take a full day or more. Ask your shop for an estimate before dropping off your vehicle.