2028 Cadillac Sollei Review, Specs, Dimensions

2028 Cadillac Sollei Review, Specs, Dimensions – The 2028 Cadillac Sollei is one of the most intriguing future luxury cars associated with Cadillac, but its story requires an important distinction from the beginning. Cadillac has officially introduced Sollei as a concept rather than a confirmed production vehicle. The original Sollei was revealed in 2024 as a coach-built, all-electric 2+2 convertible created to explore bespoke automotive design. Cadillac describes it as an expression of future custom-commissioned vehicles, combining dramatic proportions, open-air motoring, advanced technology, and highly personalized materials. As of October 2026, Cadillac has not announced official 2028 production specifications, pricing, trim levels, or a release date for Sollei.

That uncertainty actually makes the 2028 Cadillac Sollei particularly interesting. The concept is closely aligned with the philosophy behind the Cadillac CELESTIQ, an ultra-luxury electric vehicle that has moved from concept to limited, custom-commissioned production. Cadillac currently describes CELESTIQ as a one-of-a-kind vehicle, hand-built and personalized for individual customers. The company has therefore already demonstrated that an extremely low-volume luxury model can operate outside the traditional mass-market trim structure. If Sollei eventually receives a production green light, it would make sense for Cadillac to position it as an exclusive open-air companion to CELESTIQ rather than as a conventional convertible competing on volume.

The Sollei concept also fills an unusual gap in the modern Cadillac portfolio. Cadillac has produced dramatic luxury convertibles throughout its history, but the brand has not had a true four-seat flagship convertible in decades. Sollei returns to that idea with a contemporary interpretation built around electric propulsion rather than a large gasoline engine. Its long hood-like visual treatment, extremely low body, stretched proportions, wide stance, and flowing rear deck give it the presence of a grand touring automobile while the retractable roof transforms the experience into something closer to a luxury yacht on wheels.

For the potential 2028 model, the most realistic expectation is therefore not a traditional Cadillac with Luxury, Sport and Premium trims. A production Sollei would likely be a highly restricted, individually commissioned vehicle, assuming Cadillac decides to build it at all. The company’s current bespoke strategy provides an important clue: CELESTIQ buyers work with a Cadillac design concierge to develop colors, materials, finishes and other details around their individual tastes. Sollei’s original purpose was similarly centered on personalization, making a future production version far more likely to follow a coach-built formula than a conventional dealership model. 2028 Cadillac Sollei Review

2028 Cadillac Sollei Redesign and Update Plan

Exterior & Interior

The exterior design is arguably the strongest argument for turning the Sollei concept into a production automobile. Its body is long, low and exceptionally wide, with a stretched silhouette that emphasizes the traditional grand-tourer proportions Cadillac wants to revive. The concept uses a long coupe-style door, a low rear deck and a broad stance, while the windshield frame is finished in milled brushed aluminum. Cadillac also designed the door treatment with minimal conventional hardware, contributing to an almost architectural appearance. Rather than covering the body with unnecessary creases, the design relies on uninterrupted surfaces and carefully controlled lines to create visual drama.

At the front, the Sollei follows Cadillac’s modern lighting philosophy while taking a more elegant approach than the company’s larger SUVs. Vertical lighting elements create a recognizable Cadillac signature, while the broad nose and carefully integrated illumination give the vehicle a futuristic identity. The side profile is especially important because the absence of a fixed roof changes the entire balance of the car. The long doors, open cabin and low tail create the appearance of a classic American luxury convertible without simply copying historic designs. A production 2028 Sollei could retain most of this silhouette while making practical changes required for structural rigidity, pedestrian protection, lighting regulations and other certification requirements.

The roof is another defining feature. Cadillac’s concept uses a metallic convertible fabric called “Daybreak,” a name chosen to reinforce the vehicle’s relationship with sunlight and open-air travel. When the roof retracts, the cabin becomes completely connected to its surroundings, turning the Sollei from a sophisticated closed grand tourer into a genuine luxury convertible. The concept’s color and material strategy is equally distinctive, with an “Aurora” treatment for metal finishes and an intentionally light interior palette. Such details demonstrate that Sollei was designed around an emotional ownership experience rather than merely providing another electric drivetrain in a different body style.

Inside, the 2028 Cadillac Sollei would be expected to remain highly faithful to the concept’s philosophy if production is approved. The cabin is arranged as a 2+2, giving rear passengers a dedicated luxury environment rather than treating the second row as emergency seating. Cadillac fitted the concept with its signature 55-inch pillar-to-pillar display, complemented by front and rear command interfaces. A built-in beverage chiller, custom crystal glassware, premium seating surfaces and specialized storage areas reinforce the idea that the car is intended for relaxed long-distance travel. The concept also uses Fine Nappa leather, sunburst-inspired quilting and embroidery, and bio-based Fine Mycelium material developed with MycoWorks.

2028 Cadillac Sollei Specs

Engine & Performance

Cadillac has not released a complete powertrain specification for the Sollei concept, so any discussion of 2028 performance must remain an informed projection rather than a statement of confirmed production specifications. The most logical technical reference is the CELESTIQ, because Cadillac positions both vehicles within its bespoke ultra-luxury strategy and the Sollei concept was created around closely related design and engineering ideas. The current CELESTIQ uses a dual-motor all-wheel-drive electric system producing 655 horsepower and 646 lb-ft of torque, with Cadillac quoting a 0-to-60-mph time of 3.7 seconds using Velocity Max.

A production Sollei could potentially use an evolved version of that general architecture, although Cadillac has not confirmed that it will. This would be particularly appropriate for a flagship convertible because dual-motor all-wheel drive could provide strong traction while delivering the smooth, nearly silent acceleration expected from an ultra-luxury EV. Instant electric torque would also suit the Sollei’s grand-touring personality. Rather than focusing entirely on maximum acceleration, the ideal setup would deliver effortless passing power, smooth throttle response and exceptional refinement at highway speeds. For a car positioned above ordinary luxury convertibles, the sensation of effortless performance may matter more than a headline-grabbing drag-strip number.

Weight would be one of the biggest engineering challenges. A convertible requires additional structural reinforcement because removing a fixed roof changes the way the body handles torsional forces. An electric luxury car also carries a large battery pack, meaning the Sollei could be extremely heavy even before the necessary convertible strengthening is added. Cadillac would therefore need to balance battery capacity, rigidity, ride comfort and performance carefully. The benefit of an EV platform is the ability to position heavy battery components low in the chassis, potentially lowering the center of gravity and helping the Sollei feel more stable and planted through sweeping corners.

The suspension and chassis technology could become another major differentiator. CELESTIQ already demonstrates Cadillac’s ability to combine sophisticated chassis systems with ultra-luxury presentation. Its published specifications include air springs, Magnetic Ride Control 4.0 dampers, active roll control and active rear steering. A future Sollei could use related technology, potentially tuned specifically for open-air grand touring. The objective would not necessarily be razor-sharp sports-car handling. Instead, the ideal Sollei would combine precise steering with a remarkably calm ride, allowing occupants to travel quickly without sacrificing the relaxed character expected from a flagship convertible. 2028 Cadillac Sollei Review

2028 Cadillac Sollei Fuel Economy

Fuel economy requires a different discussion because Sollei is designed as an electric vehicle. There would be no gasoline fuel-economy rating in the conventional sense. Instead, buyers would care about battery capacity, EPA-estimated driving range, charging speed and energy consumption. Cadillac has not published official Sollei battery or range figures. CELESTIQ provides a useful technological reference, but its specifications should not automatically be transferred to Sollei because a convertible body, different aerodynamics, wheel sizes, structural reinforcement and final production weight could substantially alter efficiency. Any 2028 Sollei range number circulating before Cadillac confirms it should therefore be regarded as an estimate rather than an official figure.

2028 Cadillac Sollei Safety Features

Safety would be critical if the Sollei transitions from a design exercise into a road-legal production automobile. Cadillac’s current luxury EV strategy places substantial emphasis on advanced driver assistance, sensors, connected technology and hands-free driving. CELESTIQ, for example, offers Super Cruise technology, while Cadillac’s newer electric vehicles integrate extensive camera, radar and ultrasonic sensing systems. A production Sollei would likely inherit the newest generation of Cadillac driver-assistance technology available at the time of launch, although no specific 2028 Sollei safety package has been announced.

Expected safety technology could include adaptive cruise control, automatic emergency braking, forward collision alert, blind-zone monitoring, lane-centering assistance, rear cross-traffic alert and advanced parking assistance. Super Cruise would also be a logical fit for a luxury grand tourer because long-distance highway travel is central to the Sollei concept. However, these features should be treated as expectations rather than confirmed equipment. Cadillac would need to finalize the vehicle’s production electronics, sensors, software and regulatory certification before publishing an official safety specification.

Technology inside the cabin could be even more important than driver assistance. The concept’s 55-inch pillar-to-pillar display creates a visual centerpiece similar to the screen architecture used by CELESTIQ. Cadillac’s production flagship also incorporates multiple interactive displays, sophisticated lighting sequences and highly individualized climate and comfort functions. For Sollei, technology would ideally remain integrated rather than overwhelming the cabin. The best implementation would allow passengers to control navigation, audio, climate, seat functions, lighting and entertainment without making the interior feel like a technology showroom.

2028 Cadillac Sollei Release Date & Price

Traditional trim levels probably would not make much sense for a production Sollei. Cadillac’s own description of the concept centers on custom commissioning and bespoke personalization, while the company’s current CELESTIQ is individually commissioned rather than offered as a conventional ladder of trims. If Sollei reaches production, a single highly configurable model could be more appropriate than separate Luxury, Premium and Performance grades. Customers could potentially choose unique exterior finishes, interior materials, wheel designs, roof colors, trim combinations and personalized details instead.

Pricing is even less certain. Cadillac has not announced a 2028 Sollei MSRP, and there is currently no official order guide or production price list. The CELESTIQ is the most useful benchmark because it occupies the same bespoke ultra-luxury space. Cadillac currently sells CELESTIQ by inquiry, while its hand-built nature and extensive personalization place it far above mainstream luxury EVs. Consequently, a production Sollei would likely command a six-figure price well above conventional Cadillac models. A price in the $300,000-plus territory would be plausible if Cadillac maintains the concept’s coach-built positioning, but this is a projection, not an announced MSRP.

The bespoke manufacturing strategy could also make the final transaction price dramatically different from a theoretical base price. Customers interested in a vehicle like Sollei would not necessarily be purchasing a standard configuration from dealer inventory. Instead, the buying process could resemble CELESTIQ, where Cadillac provides a design concierge and guides customers through personalized colors, materials and finishes. Cadillac’s expanding hand-built strategy is becoming increasingly relevant here. The company has announced that its Curated by Cadillac ESCALADE IQ program will involve hand-built 2027 vehicles at its Artisan Center in Warren, Michigan, with deliveries expected to begin in the second half of 2027.

The biggest question is the release date. As of October 2026, Cadillac has not confirmed that Sollei will enter production for the 2028 model year. The company continues to identify Sollei as a concept, and Cadillac’s official concept-vehicle pages state that concept vehicles shown there are not currently available for sale. That means a 2028 release should not be presented as a confirmed event. If Cadillac eventually approves the program, a limited-production launch in the 2027–2029 period would be technically conceivable, particularly because the company already operates a bespoke manufacturing ecosystem. Nevertheless, no official production timetable currently exists. 2028 Cadillac Sollei Review

Conclusion

The 2028 Cadillac Sollei represents a fascinating possibility because it combines several directions Cadillac has been pursuing at the same time: electrification, ultra-luxury design, bespoke personalization and a renewed emphasis on American automotive drama. The original concept already provides a remarkably complete vision, from its 2+2 convertible architecture and long proportions to its 55-inch display, bespoke materials, integrated beverage chiller and sunlight-inspired design details. Cadillac has also demonstrated through CELESTIQ that the company is willing to build extremely exclusive vehicles through a personalized, low-volume production process.

For now, Sollei remains a concept, and that distinction matters. There is no confirmed 2028 production specification, official MSRP, EPA range, trim structure or release date. Still, the concept’s relationship with Cadillac’s bespoke strategy makes it more than a random styling exercise. If the company decides that demand exists for a limited-production electric convertible, Sollei could become a flagship statement unlike anything else in the Cadillac lineup. Instead of chasing volume, it could sell craftsmanship, exclusivity and an experience built around open-air electric grand touring.

The most compelling future scenario would be a hand-built Sollei using Cadillac’s latest electric technology while retaining the visual character that made the concept so memorable. A powerful all-wheel-drive system, long-range battery, advanced suspension, Super Cruise, a sophisticated luxury cabin and virtually unlimited personalization would create a distinctive alternative to European ultra-luxury convertibles. It would also give Cadillac an opportunity to revive the idea of the great American flagship convertible for the electric age.

Until Cadillac announces production, however, the 2028 Cadillac Sollei should be viewed as a highly promising possibility rather than a confirmed model. That caveat does not diminish the concept’s significance. Sollei shows how Cadillac could translate its “Standard of the World” ambition into a completely different body style, and if the company eventually gives it the green light, the result could become one of the rare modern automobiles that feels like a collectible before it even reaches its first owner.