Car accessory upgrades fall into two camps: the ones you notice every single drive, and the ones you regret by the second week. After covering dozens of automotive brands on Trendshelf, we have a decent map of which is which. This roundup walks through six upgrade categories — floor mats, head units, truck hardware, detailing, plate covers and phone protection — and in each one features a specialist brand whose products we can describe from the maker’s own materials rather than marketing folklore.
How we picked: every brand here does one thing as its core business rather than selling a little of everything, and every product detail below comes straight from the brand’s own catalogue. Where a claim is a matter of taste — how a mat looks, how a coating feels — we say so.
Floor mats and interiors: Luxus Car Mats
Floor mats are the upgrade your passengers notice first and your resale value thanks you for later. Luxus Car Mats has built its whole business on them, offering what it describes as the world’s largest selection of luxury car mats — custom mats for over 1,000 vehicles, cut with laser precision for an exact fit and 99% floor coverage.
The flagship Diamond Double Layer Series pairs a quilted diamond-stitched top layer with a second protective layer underneath, in combinations like Ferrari Red & Black with top layers in red, grey, brown, black or beige. Beyond mats, the brand’s VeilFit™ OEM-Style Seat Covers take a different angle from the usual baggy universal cover: an ultra-thin suede design intended to protect the seat without adding bulk. Our custom floor mat buying guide covers the fit questions to ask before ordering. Ready to measure up? Browse the Luxus range here.
Head units and dash tech: Dynavin North America
Nothing dates a 2000s-era German car like its factory radio. Dynavin North America specialises in OEM-look stereo and navigation upgrades for BMW, Mercedes, Audi, VW and Porsche (plus Ford, GMC and Jeep) — screens that look like they came from the factory, minus the factory limitations.
The catalogue is organised by chassis, which is exactly how it should be. A BMW 3 Series owner picks the unit for their generation — the D9-E46 for 1998–2006 cars or the D8-E90 for 2006–2013 — while the Mercedes D8-CLK is a plug-and-play unit with a 7-inch capacitive touchscreen at 1024×600 resolution, and the VW CC unit stretches to a 10.1-inch display at 1280×720. Dynavin also sells the supporting cast: a universal license plate backup camera (an Echomaster unit compatible with all Dynavin radios) and the Fakra-to-RCA adapters that make factory wiring cooperate. We wrote a full walkthrough in our OEM-look stereo upgrade guide; if you already know your chassis code, find your model’s unit here.
Truck and off-road hardware: Trail Grid Pro
Toyota truck owners upgrade differently — wheels, lighting and armour before anything cosmetic. Trail Grid Pro serves exactly that crowd, stocking parts and accessories for the 4Runner, Tacoma, Tundra, Sequoia and Land Cruiser.
Two product families stand out in its catalogue. The RRW Hybrid MonoForged wheel line (RG4-H, RG6-H, RS5-H, RG7-H in finishes like matte black, matte gunmetal and graphite blue) is pitched at overlanders and off-road drivers who want forged-grade strength without boat-anchor weight. On the lighting side, Trail Grid Pro carries Morimoto XB EVO headlights for the 2014–2021 Tundra, including the hybrid version and the Supercharged LED drivers that unlock extra output from them. It is a focused, unglamorous catalogue in the best way — see what fits your Toyota here.
Detailing and paint care: MAXL and Stealth Supply
Detailing is the highest-return upgrade per dollar on this list, because it upgrades every panel at once. Two brands cover the spectrum.
MAXL: coatings without the scratch anxiety
MAXL builds its range around one promise: professional results without scratching. The MAXL Method Complete System 2.0 packages the whole workflow — decontaminate first, then coat — while MAXL ONE™ with Triphene™ is the one-bottle answer: a big 20oz product that cleans and coats in a single pass, works as a waterless wash, and aims to leave surfaces looking deeper and richer. Supporting tools include the dual-sided RESMOOTH™ clay and bug prep towel and lint-free WorkSoft® microfiber towels with AssuraSoft™ technology.
Stealth Supply: the enthusiast’s wash routine
Stealth Supply approaches the same goal from the wash-bucket side. The Stealth Wash Kit is a complete soap-and-mitt system built around thick foam and safe contact; Swift Shine is the quick detailer for between-wash touch-ups; Gloss Lock is a long-lasting tire coating rather than a temporary dressing; and the ammonia-free glass cleaner handles fingerprints without harsh odours. Between them: MAXL suits owners who want protection locked in with minimal technique, while Stealth Supply rewards the weekend washer who enjoys the ritual.
Plate covers and exterior styling: BL4CKOUT Labs
BL4CKOUT Labs makes Blackout Plate and Vanish Plate license plate covers, designed for off-road use with a sleek, privacy-first look. The Essential Bundle is the sensible way in: it packages the cover with a battery pack for a clean, wire-free install, and versions exist for cars, slimline plates and motorcycles, with matte screen-protector films to finish the look. One honest caveat we repeat every time this category comes up: plate covers of any kind sit in a legal grey-to-red zone on public roads in many jurisdictions, so treat them as off-road and show equipment and read our plate cover legality explainer before buying.
Phone protection for the daily drive: Coverlab
The last upgrade is the one in your cupholder. A dead or shattered phone ends more road trips than any mechanical failure, so case-and-mount is a legitimate car accessory category. Coverlab covers the case half with a design-led catalogue of over 100 designer iPhone cases — Tough cases for drop protection, Clear MagSafe cases that keep magnetic mounting and charging intact (the key feature for anyone using a magnetic dash mount), and personalised designs from glitter and marble to fully custom prints. Pair a MagSafe-compatible case with a solid mount and in-car navigation stops being a balancing act; find a case that survives the commute here.
The verdict: order of operations
- Detailing first — cheapest, transforms the whole car, and protects everything you do next.
- Mats second — they stop tomorrow’s wear today.
- Tech third — a head unit upgrade changes every minute you spend driving.
- Styling last — plates, cases and cosmetic touches once the fundamentals are covered.
And if your upgrades are building toward actual road trips, sort your cooling strategy too — our 12V car fridge vs cooler guide settles the debate that follows every long-haul packing list.