The Ultima GTR car is one of the most extreme performance machines ever offered to private enthusiasts. Built with a focus on raw speed, lightweight engineering, and driver involvement, it delivers supercar-level performance without the supercar price tag. Unlike mass-produced exotics, this vehicle appeals to those who value engineering purity, customization, and an authentic driving experience.
This guide explores everything you need to know, from history and specifications to real-world ownership, costs, legality, and whether this legendary British supercar is right for you.
What Is the Ultima GTR?
The Ultima GTR is a British-built mid-engine sports car developed by Ultima Sports Ltd. It is best known for being offered as both a kit car and a factory-built turnkey vehicle. This unique approach allows buyers to either build the car themselves or receive a fully assembled version.
What makes the Ultima GTR car stand out is its uncompromising design philosophy. It prioritizes power-to-weight ratio, mechanical simplicity, and track-focused performance over luxury or driver aids. This makes it one of the fastest-accelerating road-legal vehicles when properly configured.
Ultima GTR History and Evolution
Production of the Ultima GTR began in the late 1990s and continued until around 2015. Over the years, the model received incremental improvements rather than complete redesigns. These changes focused on chassis rigidity, suspension geometry, braking performance, and drivetrain reliability.
Later models benefited from improved Porsche-sourced transaxles and stronger braking systems, making them more durable for high-power applications. The GTR eventually paved the way for newer Ultima models, but it remains one of the most iconic kit supercars ever built.
Performance Overview
Performance is the core reason the Ultima GTR exists. Thanks to its extremely lightweight construction and powerful V8 engines, it offers acceleration figures that rival or exceed many modern hypercars.
The Ultima GTR car achieves its performance advantage through simplicity. There are no heavy luxury systems, minimal electronics, and a pure mechanical connection between driver and machine. This approach results in exceptional throttle response and precise handling.
-
Engine Options
Most Ultima GTR builds use Chevrolet V8 engines, particularly LS series units. Power outputs typically range from 350 horsepower in entry-level builds to well over 700 horsepower in high-performance configurations. Buyers can choose naturally aspirated setups for reliability or higher output versions for maximum acceleration. Engine choice plays a major role in both performance and ownership costs.
-
Acceleration and Top Speed
Depending on configuration, 0 to 60 mph times can fall below three seconds. The car has also achieved record-breaking 0 to 100 to 0 runs, highlighting its braking capabilities. Top speed varies based on gearing and aerodynamics, with some builds exceeding 200 mph. These figures place the Ultima among the fastest road-legal cars available.
Ultima GTR Specifications
Below is a general overview of typical specifications.
Engine: Chevrolet V8
Drivetrain: Rear wheel drive
Transmission: Manual with Porsche transaxle
Weight: Approximately 950 to 1050 kg
Chassis: Tubular steel space frame
Suspension: Fully adjustable independent setup
Brakes: High-performance ventilated disc brakes
These specifications explain why the Ultima GTR car delivers such extreme performance compared to heavier supercars.
Ultima GTR Variants Explained
Several performance-oriented versions of the GTR were produced.
The standard GTR offers an excellent balance of usability and speed.
The GTR 640 increases power output for more aggressive performance.
The GTR 720 is focused on maximum acceleration and track use.
The Evo variant introduces further refinements in aerodynamics and cooling.
Understanding these differences helps buyers choose the right configuration for their driving goals.
Kit Car vs Turnkey Build
One of the most important decisions is whether to buy the car as a kit or a factory-built vehicle. A kit build offers lower initial cost and a deep sense of involvement but requires mechanical knowledge, time, and patience. Build times can range from several months to over a year.
A turnkey build costs more but removes the complexity and risk. It is ideal for buyers who want immediate usability and professional assembly. This flexibility is a major reason the Ultima GTR car appeals to such a wide range of enthusiasts.
Price and Cost Breakdown
Kit prices typically start in the lower five-figure range, but this does not include the engine, transmission, or labor. A complete self-build can reach well into six figures depending on specifications.
Turnkey models usually cost significantly more but offer peace of mind and consistency. Used Ultima GTR prices vary widely based on build quality, engine choice, and condition. Ownership costs are relatively reasonable compared to exotic supercars, though insurance and maintenance should not be underestimated.
Driving Experience
Driving the Ultima GTR is an intense and immersive experience. Steering is direct, throttle response is immediate, and the car feels tightly connected to the road. On track, it excels with a sharp turn-in and immense grip. On public roads, it demands respect due to its power and low ground clearance. Comfort is minimal, but that is part of its appeal.
Ownership Reality
Ownership requires a hands-on mindset. Maintenance is straightforward for those familiar with performance vehicles, and parts availability is generally good thanks to shared components with mainstream manufacturers. However, reliability depends heavily on build quality. Well-assembled examples are dependable, while poorly built cars can become expensive projects.
Road Legality and Registration
In many regions, the Ultima GTR can be registered for road use if it meets local regulations. This often involves inspections, emissions compliance, and proper documentation. Insurance can be more expensive than average due to performance levels, but specialist providers are available.
Pros and Cons
Pros
Exceptional performance per dollar
High customization potential
Track-ready engineering
Cons
Limited comfort
Requires mechanical understanding
Not ideal for daily driving
Who Should Buy the Ultima GTR?
The Ultima GTR is ideal for experienced drivers, track enthusiasts, and those who value engineering purity. It is not suited for buyers seeking luxury, convenience, or automated driving aids. If you want a raw, engaging, and brutally fast machine, the Ultima GTR car delivers in a way few vehicles can.
Ultima GTR vs Other Supercars
Compared to a Porsche 911 or Corvette, the Ultima offers superior power-to-weight ratio and track performance at a lower cost. Against Ferrari models, it trades prestige and luxury for outright speed and driver engagement.
The Ultima GTR remains one of the most extreme performance bargains ever created. It is not for everyone, but for the right buyer, it offers unmatched excitement, customization, and value.