The question is what is the difference Zhiguli 5 and 7 model remains one of the most popular among fans of AvtoVAZ classics. These two cars, which have become symbols of the Soviet and post-Soviet automobile industry, seem very similar in appearance, but have a number of significant design differences.
Understanding these nuances is critically important for those who are planning to buy a vintage car for restoration or simply want to understand the history of domestic mechanical engineering. VAZ-2105 and VAZ-2107 were created for different market segments, which predetermined their technical content and appearance.
In this article, we will analyze in detail all aspects, from body shape to engine features, so that you can clearly see the difference between these legendary cars.
History of creation and conceptual differences
Development VAZ-2105 began in the late 1970s with the goal of replacing the obsolete "kopek". The engineers were given the task of creating the most unified car that would be easy to produce and cheap to operate for the general public.
Model VAZ-2107, which appeared a little later, was positioned as a luxury version of the “five”. It was a car for the elite and wealthier citizens, so its design and equipment included more comfort and aesthetics. The main difference in the concept was that the “seven” was created with an eye to export markets, where a more modern look was valued.
Both models are based on the same platform, but the approach to their implementation was different. If the “five” is a utilitarian hard worker with angular shapes, then the “seven” received more streamlined lines and elements designed to hide the budget design.
Appearance: body and optics
The first thing that catches your eye when comparing is the design of the front part of the body. U VAZ-2105 rectangular optics were installed, which were new for that time and replaced the round headlights of previous models. The bumpers are made of aluminum with rubber edging, which made them vulnerable to corrosion.
U VAZ-2107 The headlights are paired, which visually expands the car and gives it a more modern look. The bumpers here are already made of plastic with chrome lining, which not only improves the appearance, but also increases resistance to impacts and rust. The radiator grille on the 7 also has a more complex and beautiful shape.
The rear of the cars also differs. The shape of the trunk lid and the location of the rear lights vary. On the “five” the lights are simpler and more vertical, while the “seven” received horizontal sections integrated into the overall line of the trunk.
⚠️ Attention: When purchasing, pay attention to the condition of the thresholds and side members. In the "five", due to the design features of the bottom and the absence of some amplifiers, corrosion often occurs faster than in the later "sevens".
The overall dimensions of the body of the models are almost identical, however, due to the bumpers and the shape of the hood, the length VAZ-2107 may vary slightly upward. The paintwork on the export versions of the Seven was often of better quality and more durable.
Interior: interior and ergonomics
The salon is where the difference between the models is felt most acutely. B VAZ-2105 There is an instrument panel with square dials and many keys ("piano buttons"). The seats have low backrests and often lack headrests in base trims.
B VAZ-2107 An instrument panel with a visor is used, which reduces glare in the sun. The speedometer here is more informative, calibrating up to 180 km/h, while the scale of the “five” often ended at 160 km/h. The seats in the "seven" are more comfortable, with high backs and integrated headrests.
Particular attention should be paid to the ventilation system. In the "five" the air deflectors are located specifically and are often ineffective. The "seven" uses a more sophisticated air duct system, although it is not ideal by modern standards.
When inspecting the interior of the Five, be sure to check the operation of the stove. Due to the design features of the heater valve and pipes, the heating system there often becomes airy and requires modification.
Sound insulation in both models leaves much to be desired, but the luxury “Seven” used a little more vibration-proofing materials in the door panels and floor. The steering wheel could differ in different years of production, but on later “sevens” there was often a thinner and more comfortable steering wheel.
Engines and transmission
Under the hood are perhaps the most important technical differences. Base engine for VAZ-2105 became a 1.29 liter engine with a timing belt drive. This was a revolutionary solution for that time, designed to reduce noise and increase reliability.
However, the belt often caused criticism due to low reliability and frequent breaks. Therefore, later they began to install 1.5 liter engines on the “fives”, but with a chain drive similar to the “classics”. VAZ-2107 initially it was equipped with more powerful engines of 1.5 and 1.6 liters with a chain drive.
The transmission of the cars also had differences. The “Seven” was often equipped with a 5-speed manual transmission, which saved fuel on the highway and reduced engine noise. The “Five” was mostly equipped with a 4-speed gearbox, although there are exceptions.
| Characteristics | VAZ-2105 | VAZ-2107 |
|---|---|---|
| Timing drive | Belt/Chain | Chain |
| Engine capacity (main) | 1.29 l / 1.5 l | 1.5 l / 1.6 l |
| checkpoint | 4 steps | 5 steps |
| Power | ~64 hp | ~72-77 hp |
Why did the belt break on the VAZ-2105?
Early versions of VAZ-2105 engines had a design defect in the camshaft gear, which could rotate, which led to irregular valve timing and belt breakage. Later the defect was eliminated, but the reputation of “belt” motors remained negative.
The dynamic characteristics of the 7 are objectively better thanks to the more torquey engine and the presence of a fifth gear. This makes it more suitable for country trips and overtaking on the highway.
Electrical equipment and devices
Electrical diagram VAZ-2105 much simpler, but also more archaic. It used old-style fuses, which often oxidized and caused contact problems. The instrument panel did not have a tachometer in basic versions.
B VAZ-2107 A more modern system with a new type of fuse block was used. There was always a tachometer on the dashboard, which allowed the driver to control engine speed, which is important for the service life of the engine.
The wiring in the "seven" is made of higher quality, with better insulation. However, both models suffer from the same disease - poor body mass, which leads to chaotic failures of electrical appliances.
☑️ Electrical check before purchase
Chassis and handling
The suspension of both cars is identical in design: independent at the front, dependent leaf spring at the rear. However, shock absorber settings and spring stiffness may differ. The Seven was often equipped with softer shock absorbers for comfort.
The steering on both models does not have power steering (with rare exceptions of later versions), so control requires physical effort, especially at low speeds. The steering column on the "seven" can be injury-proof, with a cardan, which increases safety.
The braking system is also similar: front disc brakes, rear drum brakes. Braking performance on both models is mediocre by modern standards and requires regular brake clearance and pad replacement.
⚠️ Attention: When replacing rear springs, remember that on the “seven” they may have a different stiffness marking. Installing springs from “five” to “seven” (or vice versa) can lead to body distortion or deterioration in load capacity.
What to choose for purchase and restoration?
The choice between these models depends on your goals. If you need a car for quiet driving around the city, restoration in factory form or as a first car for learning to drive, then VAZ-2105 would be a great budget option.
If you are planning active use, traveling long distances, or want a car with a more pleasant interior and appearance, then VAZ-2107 looks preferable. Spare parts for both models are available in abundance, but body parts for the Seven are a little more difficult to find due to their shape.
From a liquidity point of view, the "seven" has always been valued slightly higher on the secondary market. Nice copy Zhiguli 7 the models are easier to sell than the “five”, even in a similar technical condition.
For a collector's restoration, the "five" is more interesting due to its angularity and rarity in good condition, but for everyday driving the "seven" is more comfortable and dynamic.
Which engine is more reliable: with a belt or a chain?
An engine with a timing chain drive is definitely more reliable. The belt drive on the early VAZ-2105 caused a lot of trouble for owners due to breaks. Chain motors (VAZ-2103, 2106, 21213), which were installed on most "sevens" and later "fives", last much longer and do not require such frequent replacement.
Is it possible to install a 5-mortar on a VAZ-2105?
Yes, technically it is possible. The gearbox housing is the same for 4- and 5-speed classic gearboxes. However, it will be necessary to replace the box itself, the rocker and, possibly, the speedometer cable, since the drive on 5-mortars is often cable-driven, and on old 4-mortars it is a flexible shaft.
Why does the VAZ-2107 have twin headlights, and the 2105 have single ones?
This was a design decision designed to refresh the appearance of the “classics”. Twin headlights made it possible to better focus the beam of light and visually make the “face” of the car wider and more modern, bringing the design closer to Western counterparts of the time, for example, BMW or Ford.